Sea-Bird Electronics SBE 19plusV2 User Manual

SBE 19plusV2
SEACAT PROFILER

Conductivity, Temperature, and Pressure Recorder
with RS-232 Interface

Serial Number: 19P53231-6266

User Manual, Version 003

Sea-Bird Electronics, Inc.
1808 136
Bellevue, Washington 98005 USA
Tel: [phone]
Fax:[phone]

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Place NE

This page Intentionally Left Blank.

SBE 19plus CTD OPERATING AND REPAIR MANUAL

Manual Generation Date....................................................................................................................................................................................................................................

1

Limited Liability Statement...............................................................................................................................................................................................................................

2

Warning...................................................................................................................................................................................................................................................

4

Configuration.............................................................................................................................................................................................................................................

5

Manual - Version 003......................................................................................................................................................................................................................................

8

Quick Reference Sheet - Version 003.......................................................................................................................................................................................................................

123

Ni-MH Battery Charger Manual - Version 002................................................................................................................................................................................................................

125

Specifications............................................................................................................................................................................................................................................

142

Calibrations..............................................................................................................................................................................................................................................

149

Pressure Test Certificates................................................................................................................................................................................................................................

156

Appnotes..................................................................................................................................................................................................................................................

160

Drawings..................................................................................................................................................................................................................................................

251

Warranty..................................................................................................................................................................................................................................................

262

Service Request Form......................................................................................................................................................................................................................................

264

TABLE OF CONTENTS

SEA-BIRD ELECTRONICS, INC.

1808 136th Place NE

Bellevue, Washington 98005 USA

Phone: [phone]

Fax: [phone]

Email: [e-mail]

1

Manual Generation Date: 11 February 2009

2

L I M I T E D L I A B I L I T Y S T A T E M E N T

Extreme care should be exercised when using or servicing this equipment. It should be used or
serviced only by personnel with knowledge of and training in the use and maintenance of
oceanographic electronic equipment.

SEA-BIRD ELECTRONICS, INC. disclaims all product liability risks arising from the use or servicing of
this system. SEA-BIRD ELECTRONICS, INC. has no way of controlling the use of this equipment or of
choosing the personnel to operate it, and therefore cannot take steps to comply with laws pertaining to
product liability, including laws which impose a duty to warn the user of any dangers involved in
operating this equipment. Therefore, acceptance of this system by the customer shall be conclusively
deemed to include a covenant by the customer to defend, indemnify, and hold SEA-BIRD
ELECTRONICS, INC. harmless from all product liability claims arising from the use of servicing of this
system.

3

This page intentionally left blank.

4

WARNING !!

Do not submerge this instrument (S/N 19P53231-6266)

beyond the depth rating of the lowest rated component listed below!

Main Housing (Plastic) 600 meters

Pressure Sensor (350 dBar) Druck 350 meters

DO Sensor (SBE 43) 600 meters
Pump (SBE 5P) 600 meters
Seapoint Turbidity Meter 6000 meters
Fluorometer (WETLabs - ECO-FLRT) 600 meters

5

SYSTEM CONFIGURATION

11 February 2009

Model SBE 19plusV2 S/N 19P53231-6266
Instrument Type SBE 19plusV2 SeaCaT Profiler
Firmware Version 2.1
Communications 4800 baud, 8 data bits, no parity, one stop bit
Memory 64MB
Housing 600 meter (Acetron Plastic)
0 Conductivity Raw Frequency 2534.35 Hz
Pressure Sensor Strain Gauge: 350 dBar, S/N 2863051

Computer communications (Data I/O) connector Located on the P/N 17709 Y-Cable

Number of Voltages Sampled: 3

Serial RS-232C Sensor None

Data Format:

Count Temperature
Frequency Conductivity
Count Pressure, Strain Gauge
Stored Voltage 0 (External Voltage 0) Oxygen, SBE 43
Stored Voltage 1 (External Voltage 2) OBS, Seapoint Turbidity
Stored Voltage 2 (External Voltage 4) Fluorometer, WETLAB ECO-AFL/FL

Pump (SBE 5P) 055194
DO Sensor (SBE 43) 431571
Seapoint Turbidity Meter 11826
Fluorometer (WETLabs - ECO-FLRT) FLRT-1299

Individual Voltage Delay Settings for Moored Mode Applications:

SBE 43 30 Seconds
Additional Sensor(s) 4 Seconds

Configured Overall Voltage Delay Setting: 30 Seconds

Note: The 30 second voltage delay for the SBE 43 is based on the typical response time at 2 degrees Celsius for
a 0.5-mil thick membrane to read within 1% of its final value. Please consult Application Note 64 under Summary
of Response Times for Moored Applications for more information.

Note: Overall Voltage Delay Setting is based on the longest time delay listed above. To recalculate this value
when adding or removing sensors, please refer to manual text.

6

IMPORTANT SOFTWARE & HARDWARE CONFIGURATION INFORMATION

Sea-Bird supplies two versions of our software package for communication, real-time data acquisition, and data
analysis and display:

• SEASOFT-Win32 - Windows software for PC running Win 95/98/NT/2000/XP

• SEASOFT-DOS - DOS software for IBM-PC/AT/386/486 or compatible computer with a hard drive

Detailed information on the use of the Windows software follows:

SEASOFT-Win32

SEASOFT-Win32 software was supplied on a CD-ROM with your CTD. This software package is designed to run on a PC running Win
95/98/NT/2000/XP. The CD-ROM also contains software manuals that describe the appropriate applications for the various programs, the
procedure for installing the software, and instructions on using the programs. There are three primary programs used with the CTD for
setup, data collection and retrieval, data display, and data processing:

• SEATERM - terminal program for setup of the CTD and uploading of data from the CTD memory (Note: If using the CTD with the

90208 Auto Fire Module or SBE 17plus V2 SEARAM, use SeatermAF instead of SEATERM)

• SEASAVE - real-time data acquisition program

• SBE Data Processing - data processing program

Instructions for using the software are found in their Help files.

To communicate with the CTD to set it up or to upload data from the CTD memory to the computer hard drive,
SEATERM must have information about the CTD hardware configuration (communication parameters, internal
firmware, etc.) and about the computer. To communicate with the CTD, double click on Seaterm.exe:

1. In the Configure menu, select the CTD. The Configuration Options dialog box appears.

A. On the COM Settings tab, select the firmware version (if applicable), baud rate, data bits, and parity to match the CTD’s

configuration sheet. If necessary, change the com port to match the computer you are using.

B. On the Upload Settings tab, enter upload type (all as a single file, etc.) as desired.

For the SBE 17 and 25 only: enter the serial number for the SBE 3 (temperature) and SBE 4 (conductivity) modular sensors,
exactly as they appear in the configuration (.con) file.

C. On the Header Information tab, change the settings as desired.

Click OK when done. SEATERM saves the settings in a SEATERM.ini file.

2. On the Toolbar, click Connect to communicate with the CTD.

3. To set up the CTD prior to deployment:

On the Toolbar, click Status. SEATERM sends the Status command and displays the response. Verify that the
CTD setup matches your desired deployment. If not, send commands to modify the setup.

4. To upload data from the CTD:

On the Toolbar, click Upload to upload data from the CTD memory to the computer.

Sea-Bird CTDs store and/or transmit data from their primary and auxiliary sensors in the form of binary or
hexadecimal number equivalents of the sensors’ frequency or voltage outputs. This is referred to as the raw data.
The calculations required to convert from raw data to engineering units of the measured parameters (temperature,
conductivity, pressure, dissolved oxygen, pH, etc.) are performed using the software, either in real time, or after
the data has been stored in a file. SEASAVE creates the file in real time. As noted above, SEATERM uploads the
recorded data and creates the file on the computer hard drive.

To successfully store data to a file on the computer and subsequently convert it to engineering units, the software
must know the CTD type, CTD configuration, and calibration coefficients for the sensors installed on the CTD.
This information is unique to each CTD, and is contained in a configuration file. The configuration file, which has
a .con extension, was written onto a floppy disk and the CD-ROM shipped with the CTD. The .con file for a given
CTD is named with the last four digits of the serial number for that CTD (e.g., 1234.con). The configuration file is
created or modified (e.g., changing coefficients after recalibration, or adding another sensor) by using the
Configure menu in SEASAVE or
SBE Data Processing. The configuration file is used by SEASAVE to convert raw data to engineering units
when it acquires, stores, and displays real-time data. The configuration file is also used by some modules in
SBE Data Processing (Data Conversion and Derive) that convert raw data to engineering units during data
processing.

3

The instrument type and instrument configuration settings of the .con file and the required setup for the
SEATERM.ini file for the CTD as delivered are documented below. The calibration coefficients for the CTD's
sensors are contained in the calibration coefficient section of the CTD manual.

NOTE:

SEATERM will not upload data correctly without a properly configured SEATERM.ini file. SEASAVE and SBE
Data Processing will not interpret the data correctly without the correct .con file.

SEASOFT CONFIGURATION:

The correct instrument type for your instrument is SBE 19plus V2 SEACAT Profiler. The correct settings for the configuration of
your instrument as delivered are documented below:

Strain Gauge

None

3. Count Pressure, Strain Gauge

4. A/D Voltage 0 Oxygen, SBE 43

5. A/D Voltage 1 OBS, Seapoint Turbidity

6. A/D Voltage 2 Fluorometer, WETLAB ECO-AFL/FL

7

8

SBE 19plus V2 SEACAT Profiler

Conductivity, Temperature, and Pressure Recorder
with RS-232 Interface

User’s Manual

Sea-Bird Electronics, Inc.
1808 136
Bellevue, Washington 98005 USA Manual Version #003, 11/03/08
Telephone: [phone] Firmware Version 2.1 and later
Fax: [phone] SeatermV2 Version 1.00d and later
E-mail: [e-mail] Seasave V7 Version 7.18b and later
Website: www.seabird.com SBE Data Processing Version 7.18b and later

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Place NE

9

Limited Liability Statement

Extreme care should be exercised when using or servicing this equipment. It should be used or serviced
only by personnel with knowledge of and training in the use and maintenance of oceanographic
electronic equipment.

SEA-BIRD ELECTRONICS, INC. disclaims all product liability risks arising from the use or servicing
of this system. SEA-BIRD ELECTRONICS, INC. has no way of controlling the use of this equipment
or of choosing the personnel to operate it, and therefore cannot take steps to comply with laws
pertaining to product liability, including laws which impose a duty to warn the user of any dangers
involved in operating this equipment. Therefore, acceptance of this system by the customer shall be
conclusively deemed to include a covenant by the customer to defend, indemnify, and hold SEA-BIRD
ELECTRONICS, INC. harmless from all product liability claims arising from the use or servicing of
this system.

2

10

Table of Contents

Table of Contents

Section 1: Introduction ........................................................................ 5

About this Manual .............................................................................................5

How to Contact Sea-Bird...................................................................................5

Quick Start.........................................................................................................5

Unpacking SBE 19plus V2................................................................................6

Section 2: Description of SBE 19plus V2 ........................................... 7

System Description............................................................................................7

Specifications...................................................................................................11

Dimensions and End Cap Connectors..............................................................13

Batteries ...........................................................................................................14

Battery Endurance............................................................................................14

External Power.................................................................................................16

Data Storage.....................................................................................................18

Data I/O ...........................................................................................................18

Magnetic Reed Switch .....................................................................................18

Configuration Options and Plumbing ..............................................................19

Vertical Mount..........................................................................................19

Horizontal Mount......................................................................................22

Section 3: Power and Communications Test ................................... 23

Software Installation........................................................................................23

Test Setup ........................................................................................................23

Test ..................................................................................................................24

Section 4: Deploying and Operating SBE 19plus V2 ...................... 27

Sampling Modes ..............................................................................................27

Profiling Mode..........................................................................................28

Moored Mode ...........................................................................................29

Pump Operation - General ...............................................................................30

Pump Operation - Profiling Mode ...................................................................30

Pump Operation - Moored Mode.....................................................................31

Moored Mode Pump Setting Recommendations ......................................32

Real-Time Setup ..............................................................................................33

Baud Rate and Cable Length ....................................................................33

Real-Time Data Acquisition .....................................................................34

Timeout Description ........................................................................................34

Command Descriptions....................................................................................35

Data Output Formats........................................................................................60

Optimizing Data Quality for Profiling Applications........................................67

Installing Anti-Foul Fittings for Moored Applications....................................69

Setup for Deployment......................................................................................71

Deployment......................................................................................................72

Acquiring Real-Time Data with SEASAVE....................................................73

Verifying Contents of .con File ................................................................73

Acquiring Real-Time Data........................................................................75

Recovery..........................................................................................................77

Physical Handling.....................................................................................77

Uploading Data.........................................................................................78

Processing Data Using SBE Data Processing ..................................................82

Verifying Contents of Configuration (.con) File ......................................82

Editing Raw Data File......................................................................................84

3

Table of Contents

Section 5: Routine Maintenance and Calibration........................... 85

Corrosion Precautions......................................................................................85

Connector Mating and Maintenance................................................................85

Plumbing Maintenance ....................................................................................86

Replacing / Recharging Batteries.....................................................................87

Conductivity Cell Maintenance .......................................................................91

Pressure Sensor Maintenance ..........................................................................92

Pump Maintenance ..........................................................................................92

Replacing Anti-Foulant Devices (SBE 16plus, SBE 19plus)...........................93

Sensor Calibration............................................................................................94

Section 6: Troubleshooting................................................................ 96

Problem 1: Unable to Communicate................................................................96

Problem 2: No Data Recorded .........................................................................96

Problem 3: Nonsense or Unreasonable Data....................................................97

Problem 4: Program Corrupted........................................................................97

Glossary .............................................................................................. 98

Appendix I: Functional Description and Circuitry....................... 100

Sensors...........................................................................................................100

Sensor Interface .............................................................................................100

Real-Time Clock............................................................................................100

Battery Wiring ...............................................................................................101

11

Appendix II: Electronics Disassembly/Reassembly ...................... 102

Appendix III: Command Summary ............................................... 103

Appendix IV: AF24173 Anti-Foulant Device ................................ 107

Appendix V: Replacement Parts .................................................... 111

Index.................................................................................................. 114

4

12

Section 1: Introduction

Section 1: Introduction

This section includes contact information, Quick Start procedure, and photos
of a standard SBE 19plus V2 shipment.

About this Manual

This manual is to be used with the SBE 19plus V2 SEACAT Profiler
Conductivity, Temperature, and Pressure Recorder.

It is organized to guide the user from installation through operation and data
collection. We have included detailed specifications, command descriptions,
maintenance and calibration information, and helpful notes throughout
the manual.

Sea-Bird welcomes suggestions for new features and enhancements of our
products and/or documentation. Please e-mail any comments or suggestions to
[e-mail].

How to Contact Sea-Bird

Quick Start

Sea-Bird Electronics, Inc.
1808 136
Bellevue, Washington 98005 USA
Telephone: [phone] Fax: [phone]
E-mail: [e-mail] Website: http://www.seabird.com

Business hours:
Monday-Friday, 0800 to 1700 Pacific Standard Time

Except from April to October, when we are on summer time

Follow these steps to get a Quick Start using the SBE 19plus V2.
The manual provides step-by-step details for performing each task:

1. Install batteries and test power and communications (see Section 3: Power

2. Deploy the 19plus V2 (see Section 4: Deploying and Operating

th

Place Northeast

(1600 to 0100 Universal Time)

(1500 to 0000 Universal Time)

and Communications Test).

SBE 19plus V2):

A. Install new batteries if necessary.

B. Ensure all data has been uploaded, and then send InitLogging to

make entire memory available for recording if desired.

C. Set date and time and establish setup and logging parameters.

D. Moored mode - Set 19plus V2 to start logging now or in the future.

E. Install dummy plugs and/or cable connectors, and locking sleeves.

F. If applicable, remove Tygon tubing that was looped end-to-end

around conductivity cell for storage. Reconnect tubing from pump to
conductivity cell.

G. Profiling mode - Put magnetic switch in On position, send

commands to start logging now or in the future, or apply external
power, as appropriate for your instrument’s setup.

H. Deploy 19plus V2.

5

Section 1: Introduction

Unpacking SBE 19plus V2

Shown below is a typical SBE 19plus V2 shipment.

2-pin dummy plug

and locking sleeve

Conductivity cell cleaning

solution (Triton-X)

SBE 19plus V2 Manual

SBE 19plus V2 SEACAT with SBE 5M plastic pump

25-pin to 9-pin adapter

(for use with computer
with DB-25 connector)

I/O Cable

Spare o-ring and

hardware kit

Conductivity cell filling

and storage kit

SBE 19plus V2
SEACAT

Software, and Electronic Copies of

Software Manuals and User Manual

13

6

14

Section 2: Description of SBE 19plus V2

Section 2: Description of SBE 19plus V2

This section describes the functions and features of the SBE 19plus V2
SEACAT Profiler, including system description and auxiliary equipment,
specifications, dimensions and end cap connectors, batteries and battery
endurance, external power and cable length limitations, data storage,
communication settings, magnetic reed switch, and configuration options
and plumbing.

System Description

The SBE 19plus V2 SEACAT Profiler is designed to measure conductivity,
temperature, and pressure in marine or fresh-water environments at depths up
to 7000 meters (22,900 feet). The 19plus V2 operates in two modes:

• Profiling mode for acquiring vertical profiles. The 19plus V2 runs

continuously, sampling at 4 scans per second (4 Hz). It can average up to

32,767 samples, storing and transmitting only averaged data.

• Moored mode for acquiring time series measurements once every

10 seconds to every 4 hours, adjustable in 1-second increments. Between

samples, the 19plus V2 powers down, drawing only 20 microamps.

Self-powered and self-contained, the 19plus V2 features the proven Sea-Bird
conductivity and temperature sensors and a precision, semiconductor, strain­gauge pressure sensor. Nine D-size alkaline batteries provide 60 hours
operation in Profiling mode; the 64 Mbyte FLASH RAM records 400 hours of
conductivity, temperature, and pressure data while sampling at four scans per
second (other configurations/setups vary). The 19plus V2 three-wire RS-232C
interface provides simultaneous, real-time monitoring. User-selectable output
format is raw data or engineering units, in hexadecimal or decimal form; XML
output is also available. Setup, diagnostics, and data extraction are performed
without opening the housing. The 19plus V2 can power and acquire the
outputs of external sensors.

Logging is started by sliding the On/Off switch, by command via the RS-232
interface, or by applying external power, depending on your instrument setup.

A standard 19plus V2 is supplied with:

• Plastic housing for depths to 600 meters (1950 feet)

• 64 Mbyte FLASH RAM memory

• Internally mounted strain-gauge pressure sensor

• 9 D-size alkaline batteries (Duracell MN1300, LR20)

• Impulse glass-reinforced epoxy bulkhead connectors:

- one 6-pin connector for data I/O, external power, and pump power;

- three 6-pin connectors, for two differential auxiliary A/D inputs each;

- one 4-pin connector, for RS-232 auxiliary sensor (SBE 38 secondary

temperature sensor, or up to two Pro-Oceanus Gas Tension Devices)

• T-C Duct, which ensures that Temperature and Conductivity

measurements are made on the same parcel of water

• SBE 5M miniature pump (with plastic housing for depths to 600 meters)

for pumped conductivity; by fixing the flow to a constant rate, the pump

ensures a constant conductivity time response. The T-C duct and pump

combination results in dramatically lower salinity spiking.

7

Section 2: Description of SBE 19plus V2

)

SBE 19plus V2 options / accessories include:

• Titanium housing for use to 7000 meters (22,900 feet)

• Internally mounted Quartz pressure sensor in place of strain-gauge sensor

• SBE 5M miniature pump with titanium housing in place of plastic housing

• SBE 5P (plastic) or 5T (titanium) pump in place of SBE 5M for use with

dissolved oxygen and/or other pumped auxiliary sensors

• Sensors for dissolved oxygen, pH (Profiling mode only), fluorescence,

light (PAR), light transmission, and turbidity

• Stainless steel cage

• Wet-pluggable (MCBH) connectors in place of standard connectors

• Nickel Metal Hydride (NiMH) batteries and charger

• Nickel Cadmium (Ni-Cad) batteries and charger

• Moored mode conversion kit with anti-foulant device fittings, for when

19plus V2 used on moorings

Future upgrades and enhancements to the SBE 19plus V2 firmware can be
easily installed in the field through a computer serial port and the Data I/O,
Pump, and External Power bulkhead connector on the 19plus V2, without the
need to return the 19plus V2 to Sea-Bird.

The 19plus V2 can be used with the following Sea-Bird equipment:

Notes:

• The SBE 32 Carousel is a 12-,
24-, or 36-bottle water sampler. The
SBE 55 ECO is a 3- or 6-bottle
water sampler.

• SEASAVE 7.18 or later also
supports acquisition of data from a
NMEA device connected directly
to the computer (instead of the
deck unit

.

• SBE 32 Carousel Water Sampler and SBE 33 Carousel Deck Unit OR

SBE 55 ECO Water Sampler and SBE 33 Carousel Deck Unit -

The SBE 32 or SBE 55 provides +15 VDC power to the 19plus V2 and
has ample power for auxiliary sensors not normally supported by battery­powered CTDs. CTD data from the 19plus V2 is converted into single­wire telemetry for transmission over long (10,000 meter [32,800 feet]) sea
cables. Bottles may be closed at any depth without interrupting CTD data
via software control using the SEASAVE program or from the front panel
of the SBE 33 Deck Unit. See the SBE 33 manual for operating details.

15

SBE 55 Real-Time Operation

SBE 32 Real-Time Operation

8

16

Section 2: Description of SBE 19plus V2

• SBE 36 CTD Deck Unit and Power Data Interface Module (PDIM) -

These items provide power and real-time data handling capability over
single-conductor sea cables using the same method employed in the
SBE 32/SBE 33. The PDIM is a small pressure housing that is mounted on
or near the 19plus V2. It provides +15 VDC power to the 19plus V2 and
interfaces two-way RS-232 communications from the 19plus V2 to the
telemetry used on the sea cable. See the SBE 36/PDIM manual for
operating details.

Note:

SEASAVE 7.18 or later also supports
acquisition of data from a NMEA
device connected directly to the
computer (instead of the deck unit).

• SBE 32 Carousel Water Sampler and Auto Fire Module (AFM) - The

AFM, mounted on or near the 19plus V2, allows the SBE 32 to operate
autonomously on non-conducting cables. The AFM supplies the power,
logic, and control commands to operate the SBE 32. The AFM monitors the
pressure data recorded by the 19plus V2 in real-time, closing water sampler
bottles at predefined pressures (depths) or whenever the system is stationary
for a specified period of time. Bottle number, firing confirmation, and five
scans of CTD data are recorded in the AFM memory for each bottle fired.
See the AFM manual for operating details.

SBE 32 Autonomous Operation

9

Section 2: Description of SBE 19plus V2

• SBE 55 ECO Water Sampler - The SBE 55 has built-in capabilities

Note:

The SBE 32 Carousel is a 12-, 24-, or
36-bottle water sampler. The SBE 55
ECO is a 3- or 6-bottle water sampler.

similar to that of an SBE 32 Carousel Water Sampler integrated with an
Auto Fire Module, allowing the SBE 55 to operate autonomously on non­conducting cables. The SBE 55 monitors the pressure data recorded by the
19plus V2 in real-time, closing water sampler bottles at predefined
pressures (depths) or whenever the system is stationary for a specified
period of time. Bottle number, firing confirmation, and five scans of CTD
data are recorded in the SBE 55 memory for each bottle fired. See the
SBE 55 manual for operating details.

17

Notes:

• Help files provide detailed
information on the use of
SeatermV2, SEASAVE V7, and
SBE Data Processing.

• Separate software manuals on the
CD-ROM also provide information
on the use of SEASAVE V7 and
SBE Data Processing.

• Sea-Bird also supplies an older
version of SEASAVE, SEASAVE­Win32. However, all SEASAVE
instructions in this manual are
written for SEASAVE V7. See
SEASAVE-Win32’s manual and/or
Help files if you prefer to use the
older software.

• Sea-Bird supplies the current
version of our software when you
purchase an instrument. As software
revisions occur, we post the revised
software on our FTP site. See our
website (www.seabird.com) for the
latest software version number, a
description of the software changes,
and instructions for downloading the
software from the FTP site.

The SBE 19plus V2 is supplied with a powerful Win 2000/XP software
package, SEASOFT-Win32, which includes:

• SeatermV2 – terminal program for easy communication and data

retrieval. SeatermV2 is a launcher. Depending on the instrument selected
it launches Seaterm232 (RS-232 instruments, such as the 19plus V2),
Seaterm485 (RS-485 instruments), or SeatermIM (inductive modem
instruments).

• SEASAVE V7 – program for acquiring, converting, and displaying real-

time or archived raw data.

• SBE Data Processing – program for calculation and plotting of

conductivity, temperature, pressure, auxiliary sensor data, and derived
variables such as salinity and sound velocity.

10

18

Section 2: Description of SBE 19plus V2

Specifications

Measurement Range

Initial Accuracy

Typical Stability

Resolution

Sensor Calibration

(measurement outside these ranges
may be at slightly reduced accuracy
due to extrapolation errors)

Temperature

(°C)

-5 to +35 0 to 9

0.005 0.0005

0.0002/month 0.0003/month

• 0.00005 (most oceanic water;

0.0001

+1 to +32

• 0.00007 (high salinity water;

• 0.00001 (fresh water;

0 to 9; physical calibration over

range 2.6 to 6 S/m, plus zero

*Notes on Quartz Pressure Sensor Resolution:

Pressure Sensor Resolution = Sensitivity * Counter Resolution

• Sensitivity = Δ pressure / Δ frequency

where Δ pressure is change in pressure in desired units (psia, db, meters, etc.) = pressure sensor full scale range
Δ frequency is change in frequency in Hz ≈ 3000 Hz over sensor’s full scale range

• Counter Resolution = pressure sensor output frequency / (integration time * 1,843,200)

where pressure sensor output frequency ≈ 35,000 Hz
Integration time = 0.25 seconds
(requires NAvg= even number for Profiling mode; requires NCycles= even number for Moored mode)

• To convert pressure units: db = psia / 1.45

• Increasing NAvg= (Profiling mode) or NCycles= (Moored mode) reduces the measurement noise.

Example: What resolution can be obtained for a 7000 meter (10,000 psia) Quartz pressure sensor?

Sensitivity = Δ pressure / Δ frequency = 7000 m / 3000 Hz = 2.333 m / Hz

Counter Resolution = pressure sensor output frequency / (integration time * 1,843,200) = 35,000 Hz / (integration time * 1,843,200)
= 35,000 Hz / (0.25 seconds * 1,843,200) = 0.076 Hz

Resolution = Sensitivity * Counter Resolution = 2.333 db/Hz * Counter Resolution
= 2.333 db/Hz * 0.076 Hz = 0.18 db

≈ 0.18 m = 180 mm

Conductivity

(S/m)

resolves 0.4 ppm in salinity).

resolves 0.4 ppm in salinity).

resolves 0.1 ppm in salinity).

conductivity (air)

Pressure

0 to full scale range:

• Strain-gauge sensor: 20 / 100 /
350 / 600 / 1000 / 2000 / 3500 /
7000 meters

• Quartz sensor: 20 / 60 / 130 / 200 /
270 / 680 / 1400 / 2000 / 4200 /
7000 / 10500 meters

• Strain-gauge sensor:

0.1% of full scale range

• Quartz sensor:

0.02% of full scale range

• Strain-gauge sensor:

0.1% of full scale range/year

• Quartz sensor:

0.025% of full scale range/year

• Strain-gauge sensor:

0.002% of full scale range

• Quartz sensor:

0.0025% of full scale range for

NAvg=2 (Profiling mode) or
NCycles=2 (Moored mode);

(see notes below)

Ambient pressure to full scale range
in 5 steps

11

Section 2: Description of SBE 19plus V2

Continued from previous page

Memory

64 Mbyte non-volatile FLASH memory

Recorded Parameter Bytes/sample
Temperature & Conductivity 6 (3 each)
Strain-gauge or Quartz Pressure 5

Data Storage

each external voltage 2
SBE 38 secondary temperature 3
each Pro-Oceanus GTD 4 (pressure) + 3 (temperature)
date & time (Moored mode only) 4

Note:

Battery packs for
NiMH, Ni-Cad, and
alkaline batteries differ
– you cannot put
alkalines in the NiMH
or Ni-Cad battery pack
or vice versa.

Real-Time Clock

Internal
Batteries

(nominal
capacity)

External Power
Supply

32,768 Hz TCXO accurate to ±1 minute/year

Standard 9 alkaline D-cells (Duracell MN1300, LR20) - 14 amp-hours.
Optional NiMH battery pack – 8 amp-hours.
Optional Ni-Cad battery pack - 4.4 amp-hours.

9-28 VDC; current requirement varies, depending on voltage and pump:

• 3 Amps at 9V input - SBE 5M pump (cannot use SBE 5T or 5P pump
with 9V input)

• 0.5 Amps at 12V input – SBE 5M pump

• 3 Amps at 12V input – SBE 5T or 5P pump

• 0.5 Amps at 19V input – SBE 5M pump

• 1.5 Amps at 19V input – SBE 5T or 5P pump

Sampling: 70 mA
Pump: Standard SBE 5M 100 mA

Optional SBE 5P or 5T 150 mA

Communications: 65 mA
Quiescent: 20 μA

Moored Mode sampling time:

• Minimum 2.5 seconds/sample [strain-gauge pressure, pump running
while sampling (MooredPumpMode=2), 1 measurement/sample,
no delays].

• Minimum 2.45 seconds/sample [Quartz pressure, pump running

Power
Requirements

while sampling (MooredPumpMode=2), 1 measurement/sample,
no delays].

• Add 0.25 seconds for each additional measurement/sample
(NCycles >

2).

• Add pump on-time (0.5 second) if pump running before taking sample
(MooredPumpMode=1).

• Add time for user-programmed delay before sampling
(DelayBeforeSampling=).

Approximate Battery Endurance 1:
CTD & 5M pump, no auxiliary sensors:
60 hours Profiling Mode, 140,000 samples Moored Mode.

1

Auxiliary
Voltage and RS­232 Sensors

Housing Depth /
Materials

With Duracell MN 1300 (LR20) cells. Dependent on sampling scheme; see

Battery Endurance for example calculations.

Auxiliary power out: up to 500 mA at 10.5 - 11 VDC
Voltage sensor A/D resolution: 14 bits
Voltage sensor input range: 0 - 5 VDC

Standard: 600 meter (1950 ft) - acetal copolymer (plastic).
Optional: 7000 meter (22,900 ft) - 3AL-2.5V titanium

With plastic housing, no pump:
in air 7.3 kg (16 lbs) in water 2.3 kg (5 lbs)
With titanium housing, no pump:

Weight

in air 13.7 kg (30 lbs) in water 8.6 kg (19 lbs)

Pump adds (in air) 0.3 to 0.7 kg (0.6 to 1.5 lbs), depending on pump
model selected. See pump brochures for details.

PN 801269 cage for 19plus V2 with strain-gauge pressure:
1016 x 241 x 279 mm (40 x 9.5 x 11 in.), 6.3 kg (14 lbs)

PN 801270 cage for 19plus V2 with Quartz pressure:

Optional Cage

1219 x 241 x 279 mm (48 x 9.5 x 11 in.)
PN 23892 cage for 19plus V2 mounted horizontally in cage in extension
stand (beneath SBE 32 Carousel Water Sampler):
965 x 279 x 305 mm (38 x 11 x 12 in.)

12

19

g

20

Section 2: Description of SBE 19plus V2

Dimensions and End Cap Connectors

Dimensions in millimeters (inches)

* See note

* See note

Note:
19plus V2 with
optional Quartz
pressure sensor is
190 mm (7.5 inches)
longer than shown
in drawin

.

Note:

A Y-cable from this connector
connects to the pump and to a
data I/O - power cable.

13

Section 2: Description of SBE 19plus V2

Batteries

Note:

See Replacing / Recharging Batteries
in Section 5: Routine Maintenance
and Calibration.

For the main battery, the SBE 19plus V2 uses nine D-cell alkaline batteries
(Duracell MN 1300, LR20), or rechargeable Nickel Metal Hydride (NiMH) or
Nickel-Cadmium (Ni-Cad) batteries. If necessary, carbon-zinc or mercury cells
can be used.

On-board lithium batteries (non-hazardous units that are unrestricted for
shipping purposes) are provided to back-up the buffer and the real-time clock in
the event of main battery failure or exhaustion. The main batteries may be
replaced without affecting either the real-time clock or memory.

Battery Endurance

Notes:

• See Specifications for power
requirements.

If the 19plus V2 is logging data and

•

the battery voltage is less than the
battery cut-off, the 19plus V2 halts
logging and displays a low battery
indication in the data. See
BatteryType= command in

Command Descriptions in Section 4:
Deploying and Operating SBE
19plus V2 for cut-off values for

various battery types.

•

See Data Storage and Specifications
for data storage limitations.

The standard alkaline battery pack has a nominal capacity of 14 amp-hours;
for planning purposes, Sea-Bird recommends using a conservative value of

10.5 amp-hours. The optional NiMH battery pack has a nominal capacity of
8 amp-hours. The optional Ni-Cad battery pack has a nominal capacity of

4.4 amp-hours.

Current consumption and sampling times vary greatly, depending on:

• instrument configuration - inclusion of optional SBE 5T or 5P pump and/or

auxiliary sensors, and

• user-programmed sampling parameters - Profiling or Moored mode;

if in Moored mode, the pump mode, number of measurements per sample,
and delay before sampling influence power consumption.

Examples are shown below for several sampling schemes for both Profiling and
Moored mode.

21

Profiling Mode Examples

Example 1 - standard alkaline batteries, SBE 5M pump, no auxiliary sensors
Sampling current = 70 mA
Pump current = 100 mA
Maximum sampling time ≈ 10.5 amp-hours / (0.070 Amps + 0.100 Amps) ≈ 61 hours

Example 2 - standard alkaline batteries, optional SBE 5T pump, auxiliary sensors drawing 100 mA
Sampling current = 70 mA
Pump current = 150 mA
Auxiliary sensor current = 100 mA
Maximum sampling time ≈ 10.5 amp-hours / (0.070 Amps + 0.150 Amps + 0.100 Amps) ≈ 32 hours

14

22

Section 2: Description of SBE 19plus V2

Moored Mode Examples

A 19plus V2 with strain-gauge pressure sensor and standard alkaline batteries is set up to sample autonomously every
10 minutes (6 samples/hour). How long can it be deployed?

Example 1 – SBE 5M pump on for 0.5 sec/sample (MooredPumpMode=1), no auxiliary sensors,
1 measurement/sample

Sampling current = 70 mA * (2.5 sec + 0.5 sec) = 0.21 amp-sec/sample
In 1 hour, sampling current = 6 * 0.21 amp-sec/sample = 1.26 amp-sec/hour

Pump current = 100 mA * 0.5 sec = 0.05 amp-sec/sample
In 1 hour, pump current = 6 * 0.05 amp-seconds/sample = 0.3 amp-sec/hour

Quiescent current = 20 microamps = 0.02 mA
In 1 hour, quiescent current ≈ 0.02 mA * 3600 sec/hour = 0.0.072 amp-sec/hour

Current consumption / hour = 1.26 + 0.3 + 0.072 = 1.63 amp-sec/hour
Capacity = (10.5 amp-hours * 3600 sec/hr) / (1.63 amp-sec/hour) = 23190 hours = 966 days = 2.6 years

However, Sea-Bird recommends that batteries should not be expected to last longer than 2 years in the field.

(NCycles=1):

Example 2 - optional SBE 5T pump on during sample (MooredPumpMode=2), 15 sec delay before sampling

(DelayBeforeSampling=15), auxiliary sensors drawing 100 mA, 4 measurements/sample (NCycles=4):

On-time = 2.5 + 15 (delay before sampling) + (4 – 1) * 0.25 (additional measurements/sample) = 18.25 sec
Sampling current = 70 mA * 18.25 sec = 1.28 amp-sec/sample
In 1 hour, sampling current = 6 * 1.28 amp-sec/sample = 7.7 amp-sec/hour

5T Pump current = 150 mA * 18.25 sec = 2.74 amp-sec/sample
In 1 hour, pump current = 6 * 2.74 amp-sec/sample = 16.4 amp-sec/hour

Auxiliary sensor current = 100 mA * 18.25 sec = 1.82 amp-sec/sample
In 1 hour, auxiliary sensor current = 6 * 1.82 amp-sec/sample = 10.9 amp-sec/hour

Quiescent current = 20 microamps = 0.02 mA
In 1 hour, quiescent current ≈ 0.02 mA * 3600 sec/hour = 0.072 amp-sec/hour

Current consumption / hour = 7.7 + 16.4 + 10.9 + 0.072 = 35.1 amp-sec/hour
Capacity = (10.5 amp-hours * 3600 sec/hr) / (35.1 amp-sec/hour) = 1076 hours = 44 days = 0.12 years

15

Section 2: Description of SBE 19plus V2

External Power

The SBE 19plus V2 can be powered from an external source (9 - 28 volts DC)
through the Y-cable connected to the Data I/O, Pump, and External Power
bulkhead connector on the sensor end cap. The internal battery pack is diode­OR’d with the external source, so power will be drawn from whichever
voltage source is higher. The 19plus V2 can also be operated from the external
supply without having the internal battery pack installed. Electrical isolation of
conductivity is retained in units powered externally, preventing ground loop
noise contamination in the conductivity measurement.

Cable Length and External Power without Deck Unit

Note:

See Real-Time Setup in Section 4:
Deploying and Operating SBE
19plus V2 for baud rate limitations

on cable length if transmitting real­time data.

Note:

Common wire resistances:

Gauge Resistance (ohms/foot)

12 0.0016
14 0.0025
16 0.0040
18 0.0064
19 0.0081
20 0.0107
22 0.0162
24 0.0257
26 0.0410
28 0.0653

There are two issues to consider if powering the 19plus V2 externally:

• Limiting the communication IR loss to 1 volt if transmitting real-time

data; higher IR loss will prevent the instrument from transmitting real-

time data because of the difference in ground potential.

• Supplying enough power at the power source so that sufficient power is

available at the instrument after considering IR loss.

Each issue is discussed below.

Limiting Communication IR Loss to 1 Volt if Transmitting Real-Time Data

The limit to cable length is typically reached when the maximum current
during communication times the power common wire resistance is more than
1 volt, because the difference in ground potential of the 19plus V2 and ground
controller prevents the 19plus V2 from transmitting real-time data.

= 1 volt = IR

V

limit

Maximum cable length = R

limit

/ wire resistance per foot

limit

where I = current required by SBE 19plus V2 during communication. The
current varies, depending on operating mode:

• Profiling mode – The 19plus V2 samples and transmits data continuously.

Use the total current required for sampling (sampling, pump, auxiliary
sensor current, and communication current) in the calculation.

• Moored mode – The 19plus V2 samples, and then transmits data. Use the

communication current, 60 mA, in the calculation.

23

Profiling Mode Examples - for 19plus V2 with standard SBE 5M pump and no auxiliary sensors

Example 1 – For 20 gauge wire, what is maximum distance to transmit power to 19plus V2 if transmitting real-time data?
Current = 65 mA (sampling) + 100 mA (pump) + 60 mA (communication) = 225 mA

= V

R

limit

/ I = 1 volt / 0.225 Amps = 4.4 ohms

limit

For 20 gauge wire, resistance is 0.0107 ohms/foot.
Maximum cable length = 4.4 ohms / 0.0107 ohms/foot = 415 feet = 126 meters

Example 2 – Same as above, but there are 4 instruments powered from the same power supply.
R

= V

limit

/ I = 1 volt / (0.225 Amps * 4 instruments) = 1.1 ohms

limit

Maximum cable length = 1.1 ohms / 0.0107 ohms/foot = 103 feet = 31 meters (to 19plus V2 furthest from power source).

Moored Mode Examples – use 60 mA communication current, regardless of 19plus V2 configuration

Example 1 – For 20 gauge wire, what is maximum distance to transmit power to 19plus V2 if transmitting real-time data?
For 60 milliamp communications current, R

limit

= V

/ I = 1 volt / 0.060 Amps = 16.7 ohms

limit

For 20 gauge wire, resistance is 0.0107 ohms/foot.
Maximum cable length = 16.7 ohms / 0.0107 ohms/foot = 1557 feet = 474 meters

Example 2 – Same as above, but there are 4 instruments powered from the same power supply.
For 60 milliamp communications current, R

limit

= V

/ I = 1 volt / (0.060 Amps * 4 instruments) = 4.1 ohms

limit

Maximum cable length = 4.1 ohms / 0.0107 ohms/foot = 389 feet = 118 meters (to 19plus V2 furthest from power source).

16

24

Section 2: Description of SBE 19plus V2

Supplying Enough Power to SBE 19plus V2

Another consideration in determining maximum cable length is supplying
enough power at the power source so that sufficient voltage is available, after
IR loss in the cable (from the turn-on transient, two-way resistance), to
power the 19plus V2. The table summarizes the maximum 2-way resistance
for various input supplies and pump configurations:

Power Supply Input

and Pump Configuration

3 Amps at 9V input, SBE 5M pump

(cannot use SBE 5T or 5P pump with 9V input)

= Maximum 2-way

R

limit

Resistance (ohms)

1

0.5 Amps at 12V input, SBE 5M pump 10

3.0 Amps at 12V input, SBE 5T or 5P pump 2

0.5 Amps at 19V input, SBE 5M pump 30

1.5 Amps at 19V input, SBE 5T or 5P pump 7

Calculate maximum cable length as:

Maximum cable length = R

/ 2 * wire resistance per foot

limit

Example 1 – For 20 gauge wire, what is maximum distance to transmit power to 19plus V2 if using 12 volt power source
with SBE 5T pump?
Maximum cable length = R
Note that 28 meters < 173 meters and 474 meters (maximum distance if transmitting real-time data in examples above),
so IR drop in power is controlling factor for this example. Using a higher voltage power supply or a different wire gauge
would increase allowable cable length.

Example 2 – Same as above, but there are 4 instruments powered from same power supply.
Maximum cable length = R
= 2 ohms / 2 * 0.0107 ohms/foot * 4 = 23 ft = 7 meters (to 19plus V2 furthest from power source)

/ 2 * wire resistance per foot = 2 ohms / 2 * 0.0107 ohms/foot = 93 ft = 28 meters

limit

/ 2 * wire resistance per foot * 4 instruments

limit

17

Section 2: Description of SBE 19plus V2

Data Storage

Note:

See Battery Endurance for
power limitations.

Example 1: Profiling mode, no auxiliary sensors, strain-gauge pressure
T & C = 6 bytes/sample Strain-gauge P = 5 bytes/sample
Storage space ≈ 64,000,000 / (6 + 5) ≈ 5,818,000 samples

Example 2: Profiling mode, 6 external voltages, strain-gauge pressure
T & C = 6 bytes/sample Strain-gauge P = 5 bytes/sample
External voltages = 2 bytes/sample * 6 voltages = 12 bytes/sample
Storage space ≈ 64,000,000 / (6 + 5 + 12) ≈ 2,782,000 samples

Example 3: Moored mode (stores date and time), 6 external voltages, strain-gauge pressure, SBE 38 RS-232 sensor
T & C = 6 bytes/sample Strain-gauge P = 5 bytes/sample SBE 38 = 3 bytes/sample
External voltages = 2 bytes/sample * 6 voltages = 12 bytes/sample Date/Time = 4 bytes/sample
Storage space ≈ 64,000,000 / (6 + 5 + 12 + 3 + 4) ≈ 2,133,000 samples

The SBE 19plus V2 has a 64 Mbyte FLASH memory. Shown below are
calculations of available data storage for several configurations. See
Specifications for storage space required for each parameter.

25

Data I/O

Magnetic Reed Switch

Notes:

• See Command Descriptions in

• Leave the switch in the Off

Magnetic switch

Sensor
end cap

Section 4: Deploying and
Operating SBE 19plus V2.

position if IgnoreSwitch=Y or
AutoRun=Y, or in Moored mode. If

the switch is On, the 19plus V2
draws an additional 15 μA from the
battery while in quiescent state.

The SBE 19plus V2 receives setup instructions and outputs diagnostic
information or previously recorded data via a three-wire RS-232C link, and is
factory-configured for 9600 baud, 8 data bits, 1 stop bit, and no parity.
19plus V2 RS-232 levels are directly compatible with standard serial interface
cards (IBM Asynchronous Communications Adapter or equal). The
communications baud rate can be changed using BaudRate= (see Command
Descriptions in Section 4: Deploying and Operating SBE 19plus V2).

Profiling Mode

A magnetic switch, mounted on the conductivity cell guard, can be used to
start and stop logging in Profiling mode. Sliding the switch to the On position
wakes up the SBE 19plus V2 and starts logging. Sliding the switch to the Off
position stops logging. The switch should be Off (towards the sensor end cap)
when not logging data; i.e., during setup, diagnostics, and data extraction.

The 19plus V2 can be set up to ignore the switch position:

• If IgnoreSwitch=Y: logging is started and stopped with

commands sent through the terminal program. Switch position has no
effect on logging.

• If AutoRun=Y: logging is started and stopped when external power is

applied and removed. Switch position has no effect on logging.

Moored Mode

In Moored mode, the magnetic switch position has no effect on logging.
Logging is started and stopped with commands sent through the
terminal program.

18

26

Section 2: Description of SBE 19plus V2

Configuration Options and Plumbing

Note:

See Section 4: Deploying and
Operating SBE 19plus V2 for

pump setup and operation.

The standard SBE 19plus V2 includes an externally mounted SBE 5M pump,
which provides a constant flow rate through the conductivity cell regardless of
descent rate. If configured with a dissolved oxygen sensor or pumped
fluorometer, the more powerful SBE 5T (titanium) or 5P (plastic) pump is used.
Any of these pumps is powered via a cable connected to the 2-pin leg of the Y­cable (which is connected to the Data I/O, Pump, and External Power bulkhead
connector on the sensor end cap).

The 19plus V2 can be configured with a wide range of auxiliary sensors.
Three standard 6-pin bulkhead connectors on the sensor end cap serve as the
input ports for the auxiliary sensor signal voltages and provide power to the
sensors. Additionally, a standard 4-pin bulkhead connector on the sensor end cap
is provided for interfacing with an RS-232 sensor, such as an SBE 38 secondary
temperature sensor or Pro-Oceanus Gas Tension Devices (up to two GTDs can
be integrated with the 19plus V2).

A 19plus V2 is typically deployed in a vertical position. However, when used
with an SBE 32 (full size) Carousel Water Sampler, the 19plus V2 is deployed
in a horizontal position in an extension stand below the Carousel. Pump
placement and plumbing for a horizontal mount is different than that for a
vertical mount.

Sea-Bird provides the system with pump placement and plumbing for the
desired orientation at the time of purchase. However, you may reorient the
system later as needed. Failure to place the pump and plumbing properly can
trap air, preventing the pump from working properly.

Shown below are schematics of the system configuration for vertical and
horizontal deployment. In the schematics, cables are omitted for clarity.
Secure each tubing connection with 2 cable ties.

Vertical Mount

• Place the exhaust as far from the intake as possible, so that exhaust water

is not pulled into the intake. Failure to place the exhaust away from the
intake can lead to errors in temperature data, because the pump transfers
heat to the exhaust water.

19

Section 2: Description of SBE 19plus V2

Shown below is the vertical mount plumbing arrangement of a 19plus V2
equipped with the standard SBE 5M miniature pump (standard plastic or
optional titanium).

Air bleed valve detail

0.5 mm (0.02 in.)

Note: Periodically clean air
bleed valve to ensure
proper functioning.

27

• Main plumbing is 13 mm ID x 19 mm OD
(1/2 inch x 3/4 inch) Tygon tubing.

• A 13 mm (1/2 inch) long piece of

9.5 mm ID x 13 mm OD (3/8 inch x 1/2 inch)
Tygon tubing is installed on the conductivity
cell exhaust to provide tight seals to the main
plumbing when optional anti-foul fittings are
installed on the 19plus V2.

20

28

Section 2: Description of SBE 19plus V2

Shown below is the vertical mount plumbing arrangement of a 19plus V2

Note:

Sea-Bird recommends use of
the pH sensor on the 19plus V2
only when the 19plus V2 is in
Profiling mode (MP).

configured with the optional SBE 5T titanium or 5P plastic pump, SBE 43
dissolved oxygen (DO) sensor, and SBE 18 pH sensor. Note that the SBE 43 is
plumbed into the system between the conductivity cell outlet and the Y-fitting.
The SBE 18 is not connected to the plumbing.

Air bleed valve detail

• Main plumbing is 13 mm ID x 19 mm OD
(1/2 inch x 3/4 inch) Tygon tubing.

• A 13 mm (1/2 inch) long piece of

9.5 mm ID x 13 mm OD (3/8 inch x 1/2 inch)
Tygon tubing to provide tight seals to the main
plumbing is installed:

- on the SBE 43 intake and exhaust, and

- on the conductivity cell exhaust when optional
anti-foul fittings are installed on the 19plus V2.

0.5 mm (0.02 in.)

Note: Periodically clean air
bleed valve to ensure
proper functioning.

21

Section 2: Description of SBE 19plus V2

•

Horizontal Mount

Shown below is the horizontal mount plumbing arrangement of a 19plus V2
configured with the optional SBE 5T titanium or 5P plastic pump, and SBE 43
dissolved oxygen (DO) sensor. Note that the SBE 43 is plumbed into the
system between the conductivity cell outlet and the pump inlet.

• Place the DO sensor intake above the conductivity sensor exhaust.

• Place the pump intake above the DO sensor exhaust.

• Orient the pump with the exhaust outlet corner up.

• If the system does not include a DO sensor, connect the tubing from the

conductivity cell directly to the pump intake.

29

Main plumbing is 13 mm ID x 19 mm OD

(1/2 inch x 3/4 inch) Tygon tubing.

• A 13 mm (1/2 inch) long piece of

9.5 mm ID x 13 mm OD (3/8 inch x
1/2 inch) Tygon tubing to provide tight

DO sensor intake and

exhaust tubing detail

seals to main plumbing is installed:

- on SBE 43 intake and exhaust, and

- on conductivity cell exhaust when
optional anti-foul fittings are installed on
19plus V2.

22

30

Section 3: Power and Communications Test

Section 3: Power and Communications Test

This section describes software installation and the pre-check procedure for
preparing the SBE 19plus V2 for deployment. The power and communications
test will verify that the system works, prior to deployment.

Software Installation

Sea-Bird recommends the following minimum system requirements for
installing the software: Windows 2000 or later, 500 MHz processor,
256 MB RAM, and 90 MB free disk space for installation.

If not already installed, install Sea-Bird software programs on your computer
using the supplied software CD:

1. Insert the CD in your CD drive.

2. Install software: Double click on Seasoft-Win32_date.exe (date is the

Note:
It is possible to use the 19plus V2
without the SeatermV2 terminal
program by sending direct
commands from a dumb terminal or
terminal emulator, such as
Windows HyperTerminal.

date that version of the software was created). Follow the dialog box
directions to install the software. The installation program allows you
to install the desired components. Install all the components, or just
install SeatermV2 (terminal program launcher for the 19plus V2),
SEASAVE V7 (real-time data acquisition), SBE Data Processing
(data processing), and SEATERM (terminal program for setting up
SBE 38 auxiliary sensor, if applicable to your system).

The default location for the software is c:\Program Files\Sea-Bird. Within that
folder is a sub-directory for each program.

Test Setup

1. Remove the dummy plug from the Y-cable and install the I/O cable:

A. Pulling the plug firmly away from the connector, remove the dummy

plug from the 4-pin connector on the Y-cable strapped to the 19plus
V2 housing. Note that the Y-cable is connected to the Data I/O,
Pump, and External Power connector on the 19plus V2 end cap, and
provides power to the pump via the 2-pin connector as well as
communications with the computer via the 4-pin connector.

B. Standard Connector - Install the I/O cable connector, aligning the

raised bump on the side of the connector with the large pin
(pin 1 - ground) on the Y-cable. OR
MCBH Connector - Install the I/O cable connector, aligning
the pins.

2. Connect the I/O cable connector to your computer’s serial port.

23

Section 3: Power and Communications Test

p

p

Test

Note:

See SeatermV2’s Help files.

Note:

See Seaterm232’s Help files.

1. Double click on SeatermV2.exe. The main screen looks like this:

SeatermV2 is a launcher. Depending on the instrument selected, it
launches Seaterm232 (RS-232 instruments), Seaterm485 (RS-485
instruments), or SeatermIM (inductive modem instruments).

2. In the Instruments menu, select SBE 19plus V2.

Seaterm232 opens; the main screen looks like this:

31

Send Commands

Window

Status –

Ready,

Uploading,

Finished

load, etc.

U

• Menus – For tasks and frequently executed instrument commands.

• Send Commands window – Contains commands applicable to your

19plus V2. The list appears after you connect to the 19plus V2.

• Command/Data Echo Area – Title bar of this window shows

Seaterm232’s current comm port and baud rate. Commands and the
19plus V2 responses are echoed here. Additionally, a command can
be manually typed or pasted (ctrl + V) here. Note that the 19plus V2
must be connected and awake for it to respond to a command.

• Status bar – Provides connection, upload, script, and capture

status information.

Command/Data Echo Area

Status Bar

Progress bar for

loading data

u

Menus

If uploading

- upload file name.

If sending XML script

– script file name.

Capture

status

24

32

Section 3: Power and Communications Test

Following is a description of the menus:

Menu Description Equivalent Command*

• Load command file – opens selected .XML

command file, and fills Send Commands
window with commands

File

• Unload command file – closes command

­file, and removes commands from Send
Commands window

• Exit - Exit program.

• Connect – connect to comm port

• Disconnect – disconnect from

comm port

Communications

• Configure – Establish communication

­parameters (comm port and baud rate).

• Disconnect and reconnect – may be useful

if 19plus V2 has stopped responding

• Abort – interrupt and stop 19plus V2’s

response

• (press Esc key several

times for Abort)

• Send 5 second break (not applicable to

19plus V2)

• Stop

• DateTime=

Command

• Send stop command

• Set local time– Set date and time to time

sent by timekeeping software on your
computer; accuracy ± 25 msec of time
provided by computer.

• Set UTC Time (Greenwich Mean Time) –

• DateTime=

Set date and time to time sent by
timekeeping software on your computer;
accuracy ± 25 msec of time provided by
computer.

Capture 19plus V2 responses on screen to
file, to save real-time data or use for

Capture

diagnostics. File has .cap extension. Press

—

Capture again to turn off capture. Capture
status displays in Status bar.

Upload

Upload data stored in memory, in format
Sea-Bird’s data processing software can use
(raw hex). Uploaded data has .xml
extension, and is then automatically
converted to a file with .hex extension.
Before using Upload: stop logging by
sending Stop.

Several status commands

and appropriate data

upload command as

applicable to user

selection of range of data

to upload (use Upload

menu if you will be

processing data with

SBE Data Processing or

viewing archived data

with SEASAVE)

• Diagnostics log - Keep a diagnostics log.

• Convert .XML data file – Using Upload

menu automatically does this conversion;

Tools

tool is available if there was a problem
with the automatic conversion.

-

• Send script – Send XML script to 19plus

V2. May be useful if you have a number of
19plus V2s to program with same setup.

*See Command Descriptions in Section 4: Deploying and Operating
SBE 19plus V2.

25

Section 3: Power and Communications Test

3. Seaterm232 will try to automatically connect to the 19plus V2. As it

connects, it sends GetHD and displays the response, which provides

Note:

Seaterm232’s baud rate must be the
same as the 19plus V2 baud rate (set
with BaudRate=). Baud is factory-set
to 9600, but can be changed by the
user (see Command Descriptions in

Section 4: Deploying and
Operating SBE 19plus V2). Other

communication parameters –
8 data bits, 1 stop bit, and no parity –
cannot be changed.

factory-set data such as instrument type, serial number, and firmware
version. Seaterm232 also fills the Send Commands window with
the correct list of commands for your 19plus V2.
If there is no communication:

A. In the Communications menu, select Configure. The Serial Port

Configuration dialog box appears. Select the Comm port and baud
rate for communication, and click OK.

B. In the Communications menu, select Connect (if Connect is grayed

out, select Disconnect and reconnect).

C. If there is still no communication, check cabling between the

computer and 19plus V2, and try to connect again.

D. If there is still no communication, repeat Step A with a different baud

rate and/or comm port, and try to connect again. Note that the

Note:

If OutputExecutedTag=Y, the 19plus
V2 does not provide an S> prompt
after the <Executed/> tag at the
end of a command response.

factory-set baud rate is documented on the Configuration Sheet.
After Seaterm232 displays the GetHD response, it provides an S> prompt
to indicate it is ready for the next command.

4. Display 19plus V2 status information by typing DS and pressing the Enter

Notes:

• The 19plus V2 automatically enters
quiescent (sleep) state after
2 minutes without receiving a
command. This timeout algorithm is
designed to conserve battery energy
if the user does not send QS to
put the 19plus V2 to sleep.
If the system does not appear to
respond, click Connect in the
Communications menu to
reestablish communications.

• Sending the status command
causes the pump to turn on for a
moment, so that the 19plus V2 can
measure and output the pump
current. Because the pump is
designed to be water lubricated, you
may hear a noise when the impeller
spins in air. Running the pump dry
for short periods (for example, when
sending the status command) will
not harm the pump.

key. The display looks like this:

SeacatPlus V 2.1 SERIAL NO. 4000 20 Oct 2008 14:02:13
vbatt = 10.1, vlith = 8.9, ioper = 61.9 ma, ipump = 20.8 ma,
iext01 = 76.2 ma
status = not logging
number of scans to average = 1
samples = 10, free = 4386532, casts = 1
mode = profile, minimum cond freq = 3000, pump delay = 60 sec
autorun = no, ignore magnetic switch = no
battery type = alkaline, battery cutoff = 7.5 volts
pressure sensor = strain gauge, range = 1000.0
SBE 38 = no, Gas Tension Device = no
Ext Volt 0 = yes, Ext Volt 1 = yes
Ext Volt 2 = no, Ext Volt 3 = no
Ext Volt 4 = no, Ext Volt 5 = no
echo characters = yes
output format = converted decimal
output salinity = no, output sound velocity = no

5. Command the 19plus V2 to take a sample by typing TS and pressing the

Enter key. The display looks like this (if in Profiling mode, with
converted decimal output format, no output salinity or sound velocity, and
auxiliary voltage sensors on channels 0 and 1):

23.7658, 0.00019, 0.062, 0.5632, 2.3748

where 23.7658 = temperature in degrees Celsius

0.00019 = conductivity in S/m

0.062 = pressure in db

0.5632 = voltage for auxiliary sensor channel 0

2.3748 = voltage for auxiliary sensor channel 1
These numbers should be reasonable; e.g., room temperature, zero
conductivity, barometric pressure (gauge pressure).

6. Command the 19plus V2 to go to sleep (quiescent state) by typing QS and

pressing the Enter key.

The 19plus V2 is ready for programming and deployment.

33

26

34

Section 4: Deploying and Operating SBE 19plus V2

Section 4: Deploying and Operating SBE 19plus V2

This section includes discussions of:

• Sampling modes (Profiling and Moored), including example sets

Note:

Separate software manuals on
CD-ROM and Help files contain
detailed information on installation,
setup, and use of Sea-Bird’s real­time data acquisition software and
data processing software.

of commands

• Pump operation

• Real-time setup

• Timeout description

• Command descriptions

• Data output formats

• Optimizing data quality for Profiling applications

• Installing anti-foul fittings for Moored applications

• Deployment

• Acquiring real-time data with SEASAVE

• Recovery - physical handling and uploading data

• Processing data

Sampling Modes

Notes:

• The 19plus V2 automatically enters

quiescent state after 2 minutes
without receiving a command.

•

Set OutputFormat=0 if you will be
using Sea-Bird’s real-time data
acquisition software (SEASAVE)
to view real-time data.

The SBE 19plus V2 has two sampling modes for obtaining data:

• Profiling mode

• Moored mode

Descriptions and examples of the sampling modes follow. Note that the
19plus V2 response to each command is not shown in the examples. Review
the operation of the sampling modes and the commands described in
Command Descriptions before setting up your system.

27

Section 4: Deploying and Operating SBE 19plus V2

Profiling Mode

Note:
Use Stop to:

• Stop sampling

• Stop waiting to start sampling

(after Startlater has been sent)

Once Stop is sent, the 19plus V2
accepts all commands again.

Note:

Sea-Bird ships the 19plus V2
with AutoRun=N (it will not
automatically start sampling
when external power is
applied). If you send
AutoRun=Y:

• Send QS to put 19plus V2 in

quiescent (sleep) state, and
then turn power off and then
on again to start sampling.
or

•

Send StartNow to
start sampling.

The SBE 19plus V2 samples data at 4 Hz (one sample every 0.25 seconds),
averages the data at pre-programmed intervals, stores the averaged data in its
FLASH memory, and transmits the averaged data real-time. The 19plus V2
provides several methods for starting and stopping logging, depending on the
settings for IgnoreSwitch= and AutoRun=:

IgnoreSwitch= AutoRun=

N N

Y N

To Start Logging: To Stop Logging:

Slide magnetic
switch on.

StartNow, or

Send

StartDateTime=

StartLater.

and

Slide magnetic switch off, or
send

Stop.

Stop.

Send

• Turn off external power, or

Y or N Y

Turn on external
power.

• (if you want to send

commands to check or
modify setup) Send

Stop.

Example: 19plus V2 in Profiling mode

Wake up 19plus V2. Set date and time to October 1, 2007 at 9:05 am. Initialize
logging to overwrite previous data in memory. Set up with strain-gauge pressure
sensor and 1 voltage sensor, average every 4 samples, and output data in raw hex
format. Set up with a 60-second pump turn-on delay after pump enters water, to
ensure pump is primed before turning on. Set up to initiate logging with the
magnetic switch. After all parameters are entered, verify setup with status
command. Send power-off command.

(Click Connect in Seaterm232’s Communications menu to connect and wake up.)

DATETIME=09012007090500
INITLOGGING
PTYPE=1
VOLT0=Y
NAVG=4
OUTPUTFORMAT=0
PUMPDELAY=60
IGNORESWITCH=N

GETCD (to verify setup)
QS

Start logging by putting magnetic switch in On position. Put 19plus V2 in water,
and allow to soak for at least time required for pump turn-on (PumpDelay=60)
before beginning downcast. If desired, use SEASAVE to view real-time data.
When cast is complete, stop logging by putting magnetic switch in Off position.

Upload data in memory, in format SBE Data Processing and SEASAVE can use.
Send power-off command.

(Click Connect in Seaterm232’s Communications menu to connect and wake up.)
(Click Upload– Seaterm232 leads you through screens to define data to be
uploaded and where to store it.)

QS

35

28

36

Section 4: Deploying and Operating SBE 19plus V2

Moored Mode

Note:
Use Stop to:

• Stop autonomous sampling

• Stop waiting to start autonomous

sampling (after Startlater has

been sent)
Once Stop is sent, the 19plus V2
accepts all commands again.

Example: 19plus V2 in Moored mode

Wake up 19plus V2. Set date and time to October 1, 2007 at 9:05 am. Initialize logging to overwrite previous data in
memory. Set up with strain-gauge pressure sensor and 1 voltage sensor, take a sample every 120 seconds, take and
average 4 measurements for each sample, do not transmit real-time data, and output data in raw hex format. Set up
pump to run for 0.5 seconds before each sample. Set up to start logging on October 15, 2007 at 11 am. Send command
to start logging at designated date and time. After all parameters are entered, verify setup with status command. Send
power-off command.

(Click Connect in Seaterm232’s Communications menu to connect and wake up.)

DATETIME=10012007090500
INITLOGGING
PTYPE=1
VOLT0=Y
SAMPLEINTERVAL=120
NCYCLES=4
MOOREDTXREALTIME=N
OUTPUTFORMAT=0
MOOREDPUMPMODE=1
STARTDATETIME=10152007110000
STARTLATER

GETCD (to verify setup)
QS

Deploy 19plus V2. Logging starts automatically at programmed date and time.

Upon recovering 19plus V2, stop logging. Upload data in memory, in format SBE Data Processing can use.
Send power-off command.

(Click Connect in Seaterm232’s Communications menu to connect and wake up.)

STOP

(Click Upload – Seaterm232 leads you through screens to define data to be uploaded and where to store it.)

QS

At pre-programmed intervals, the SBE 19plus V2 wakes up, samples data,
stores the data in its FLASH memory, and enters quiescent (sleep) state.
The 19plus V2 goes to sleep for a minimum of 3 seconds between each
sample. Logging is started with StartNow or StartLater, and is stopped with
Stop. If real-time data is to be transmitted (MooredTxRealTime=Y), data is
transmitted after measurements are complete for that sample and before
sampling begins for the next sample.

29

Section 4: Deploying and Operating SBE 19plus V2

Pump Operation - General

Do not run the pump dry. The pump is water lubricated; running it without
water will damage it. If briefly testing your system in dry conditions, fill the
inside of the pump head with water via the pump exhaust port. This will
provide enough lubrication to prevent pump damage during brief testing.

Pump Operation - Profiling Mode

Note:

The air bleed valve is used only when
the 19plus V2 is deployed in a vertical
orientation, as shown below. For
horizontal orientation, ensure that the
cell inlet and pump outlet remain below
the surface for PumpDelay=; see
horizontal schematic in Configuration

Options and Plumbing in Section 2:
Description of SBE 19plus V2.

Air bleed
valve

Pump
outlet

Cell

inlet

Plumbing for Vertical Orientation

(see Configuration Options and

Plumbing in Section 2: Description
of SBE 19plus V2 for plumbing for

horizontal orientation)

After the conductivity cell enters the water, there is a user-programmable
delay before pump turn-on so that all the air in the pump tubing can escape. If
the pump motor turns on when there is air in the impeller housing, priming is
uncertain and a proper flow rate cannot be ensured. The tubing extending
above the air-bleed hole will contain a small reserve of water. This maintains
the pump prime (for up to 1 minute, depending on the length of tubing above
the air-bleed), even if the SBE 19plus V2 is lifted up so that the cell inlet and
pump outlet are just below the water surface. This allows beginning the actual
profile very near the top of the water. The cell inlet and pump outlet must

not come above the water surface or the prime will be lost.

• If prime is lost: Stop logging. Wait at least 5 seconds, then start logging,

submerge the 19plus V2 completely, and wait for the pump delay time
before beginning the profile. (Start and stop logging with the magnetic
switch, commands, or external power, depending on your setup.)

Pump turn-on occurs when two user-programmable conditions have been met:

• Raw conductivity frequency exceeds the minimum conductivity

frequency (MinCondFreq=)

Set the minimum conductivity frequency for pump turn-on above the
instrument’s zero conductivity raw frequency (shown on the 19plus V2
Configuration Sheet), to prevent the pump from turning on when the
19plus V2 is in air.
¾ For salt water and estuarine applications:

typical value = zero conductivity raw frequency + 500 Hz

¾ For fresh/nearly fresh water:

typical value = zero conductivity raw frequency + 5 Hz
If the minimum conductivity frequency is too close to the zero
conductivity raw frequency, the pump may turn on when the 19plus V2 is
in air, as a result of small drifts in the electronics. Some experimentation
may be required, and in some cases it may be necessary to rely only on the
pump turn-on delay time to control the pump. If so, set a minimum
conductivity frequency lower than the zero conductivity raw frequency.

• Pump turn-on delay time has elapsed (PumpDelay=)

Set the pump turn-on delay time to allow time for the Tygon tubing and
pump to fill with water after the 19plus V2 is submerged. Determine the
turn-on delay by immersing the 19plus V2 (switch off, not running) just
below the air-bleed hole at the top of the Tygon tubing. Measure the time
needed to completely fill the tubing (by watching for when air bubbles
stop coming our of the air bleed valve); 30 seconds is typical. Set the
delay to approximately 1.5 times longer. When actually using the 19plus
V2, be sure to soak the instrument just under the surface for at least the
time required for pump turn-on.

Pump turn-off occurs when the conductivity frequency drops below
MinCondFreq=.

37

30

38

Section 4: Deploying and Operating SBE 19plus V2

Pump Operation - Moored Mode

Pump operation is governed by two user-programmable parameters:

• MooredPumpMode=0, 1, or 2

The 19plus V2 can be set up to operate with no pump (0),
with the pump running for 0.5 seconds before each sample (1), or
with the pump running during each sample (2).

• DelayBeforeSampling=

The 19plus V2 can be set up to delay sampling after turning on external
voltage sensors. Some instruments require time to equilibrate or stabilize
after power is applied, to provide good quality data.

MooredPumpMode= and DelayBeforeSampling= interact in the operation of
the pump, as shown below. Recommendations for settings are provided on the
next page.

(> 2.5 seconds)

Note:
Sampling time includes time for instrument to warm up as well as time to actually measure parameters. The 2.5 second
sampling time is for 19plus V2 with strain-gauge pressure sensor and 1 measurement / sample
Specifications in Section 2: Description of SBE 19plus V2 for sampling times for other setups.

(NCycles=1). See

31

Section 4: Deploying and Operating SBE 19plus V2

Moored Mode Pump Setting Recommendations

Sea-Bird provides the following recommendations for pump settings. Note that
longer pump times increase power usage, reducing battery endurance.
See Battery Endurance in Section 2: Description of SBE 19plus V2 for sample
battery endurance calculations.

Pump through Conductivity Cell Only

For most deployments, set MooredPumpMode=1 and
DelayBeforeSampling=0. The pump operates for 0.5 seconds before the

conductivity measurement is made, providing enough time to ventilate the cell
and bring in a new sample of water.

If the 19plus V2 is moored in an area with large thermal gradients, it may be
necessary to pump for a longer period of time, to eliminate any cell thermal
mass effects on the measurement. In this case, set MooredPumpMode=2 and
set DelayBeforeSampling= to a non-zero value, providing additional
ventilation time (allowing the conductivity cell temperature to equilibrate to
the water temperature) before taking the measurement.

Pump through Conductivity Cell and SBE 43 Dissolved Oxygen Sensor

Set MooredPumpMode=2.

As the pump brings new water into the SBE 43 plenum, some time is required
for the sensor to equilibrate to the new oxygen level. The time required is
dependent on the sensor’s membrane thickness, and on the water temperature.
Prior to 2007, all SBE 43s were sold with a 0.5 mil thick membrane.
Beginning in 2007, Sea-Bird began offering two membrane thicknesses –

0.5 mil (faster response, typically for profiling applications) and

1.0 mil (slower response but more durable, typically for moored applications).

Note:
See Application Note 64: SBE 43

Dissolved Oxygen Sensor –
Background Information, Deployment
Recommendations, and Cleaning and
Storage for the response time curves.

• For a 0.5 mil thick membrane – Recommended DelayBeforeSampling=

varies in a non-linear fashion, from 15 seconds at 15 °C to 30 seconds at
0 °C.

• For a 1.0 mil thick membrane – Recommended DelayBeforeSampling=

varies in a non-linear fashion, from 25 seconds at 15 °C to 40 seconds at
0 °C.

Pump through Conductivity Cell and Beckman- or YSI-type
Dissolved Oxygen Sensor

Set MooredPumpMode=2. Set DelayBeforeSampling= to
120 to 180 seconds, allowing time for the oxygen sensor to polarize before
taking the measurement.

39

32

40

Section 4: Deploying and Operating SBE 19plus V2

Real-Time Setup

Notes:

• Set baud rate with BaudRate=.

• Set data storage and real-time

output rate with NAvg= (for Profiling
Mode) or SampleInterval=
(for Moored Mode).

• Include auxiliary A/D sensors in the
data stream with VoltN= commands.
Include auxiliary RS-232 sensors in
the data stream with SBE38=,
GTD=, or DualGTD= commands.

• Set output format with
OutputFormat=.

• Real-time data is automatically
output in Profiling Mode.
In Moored Mode, set
MooredTxRealTime=Y
to output real-time data.

• If using external power, see External
Power in Section 2: Description of
SBE 19plus V2 for power limitations

on cable length.

Baud Rate and Cable Length

Without a Sea-Bird Deck Unit

The rate that real-time data can be transmitted from the SBE 19plus V2
is dependent on the amount of data to be transmitted per scan and the serial
data baud rate:

Time required to transmit data =
(number of characters * 10 bits/character) / baud rate

where

Number of characters is dependent on the included data and output
format (see Data Output Formats).
Add 2 to the number of characters shown in the output format, to
account for the carriage return and line feed at the end of each scan.
For decimal output (OutputFormat=2, 3, or 5), include decimal
points, commas, and spaces when counting the number of characters.

Time required to transmit data must be less than the real-time output rate.

The length of cable that the 19plus V2 can drive is also dependent on the baud
rate. The allowable combinations are:

Maximum Cable Length (meters) Maximum Baud Rate

1600 600

800 1200
400 2400
200 4800
100 9600

50 19200
25 38400

Example 1 - 19plus V2 without a Deck Unit. Profiling Mode, strain-gauge pressure, configured with 2 external voltages.
What is the fastest rate you can transmit real-time data over 800 m with OutputFormat=0 (raw hexadecimal data)?

With 800 meters of cable and no Deck Unit, the 19plus V2 requires a baud rate of 1200 or less.
Number of characters for OutputFormat=0 (from Data Output Formats) =
6 (T) + 6 (C) + 6 (P) + 4 (P temperature compensation) + 2*4 (external voltages) + 2 (carriage return & line feed) = 32
Time required to transmit data = (32 characters * 10 bits/character) / 1200 =

0.267 seconds > 0.25 seconds (4 Hz, maximum sampling rate).

Therefore, set NAvg=2, averaging 2 measurements/sample and storing and transmitting 1 sample every 0.5 seconds.

Example 2 - 19plus V2 without a Deck Unit. Moored Mode, strain-gauge pressure, configured with 4 external voltages,
10 measurements/sample (NCycles=10), pump running during sampling (MooredPumpMode=2), and a 15-second
delay before sampling (DelayBeforeSampling=15). What is the smallest sample interval you can use if you want to
transmit real-time data over 800 m with OutputFormat=0 (raw hexadecimal data)?

With 800 meters of cable, the 19plus V2 requires a baud rate of 1200 or less.
Number of characters for OutputFormat=0 (from Data Output Formats) =
6

(T) + 6 (C) + 6 (P) + 4 (P temperature compensation) + 4*4 (external voltages) + 8 (time) + 2 (carriage return & line feed) = 48

Time required to transmit data = (48 characters * 10 bits/character) / 1200 = 0.4 seconds
Minimum time required for each sample =
15 seconds (delay after turning on power) + 2.5 second sampling time + [(10-1) * 0.25 seconds] +

0.4 seconds to transmit real-time + 3 seconds to go to sleep between samples = 23.15 seconds, round up to 24

Therefore, set SampleInterval=24, storing and transmitting one sample every 24 seconds.

33

Section 4: Deploying and Operating SBE 19plus V2

With a Sea-Bird Deck Unit

Set the 19plus V2 baud rate to 4800 if using the 19plus V2 with either of the
following real-time data acquisition systems:

• SBE 36 CTD Deck Unit and Power and Data Interface Module (PDIM)

• SBE 33 Carousel Deck Unit and SBE 32 Carousel Water Sampler OR

SBE 33 Carousel Deck Unit and SBE 55 ECO Water Sampler

The data telemetry link can drive 10,000 meters of cable while accepting
4800 baud serial data. The relationship between transmission rate, amount of
data transmitted, and baud rate is as described above for a 19plus V2 without a
Deck Unit.

Example - 19plus V2 with an SBE 33 or 36 Deck Unit. Profiling Mode, strain-gauge pressure, configured with 2 external
voltages. What is the fastest rate you can transmit data with OutputFormat=0 (raw hexadecimal data)?

With a Deck Unit, the 19plus V2 requires a baud rate of 4800.
Number of characters (from Data Output Formats) =
6 (T) + 6 (C) + 6 (P) + 4 (P temperature compensation) + 2*4 (external voltages) + 2 (carriage return & line feed) = 32
Time required to transmit data = (32 characters * 10 bits/character) / 4800 =

0.067 seconds < 0.25 seconds (4 Hz, maximum sampling rate).
Therefore, set NAvg=1, providing 4 Hz data (one sample every 0.25 seconds) for this configuration.

41

Note:

If the FLASH memory is filled to
capacity, data sampling and
transmission of real-time data (if
programmed) continue, but excess
data is not saved in memory.

Timeout Description

Real-Time Data Acquisition

Real-time data can be acquired in either of the following ways:

• With SEASAVE (typical method) – When the 19plus V2 is set up for

Profiling Mode or Autonomous Sampling Moored Mode, data can be
viewed in SEASAVE in tabular form or as plots, as raw data or as
converted (engineering units) data. Data acquired with SEASAVE can be
processed with SBE Data Processing. See SEASAVE’s Help files for
details on setting up the program displays, baud rates, etc., and beginning
data acquisition.

• With Seaterm232 – Click the Capture menu; enter the desired file name in

the dialog box, and click Save. Begin logging. The data displayed in
Seaterm232 will be saved to the designated file. Process the data as
desired. Note that this file cannot be processed by SBE Data Processing

or displayed in SEASAVE, as it does not have the required headers
and format for Sea-Bird’s processing software.

The SBE 19plus V2 has a timeout algorithm. If the 19plus V2 does not receive
a command or sample data for 2 minutes, it powers down its main digital
circuits. This places the 19plus V2 in quiescent state, drawing minimal current.

To re-establish control (wake up), click Connect in Seaterm232’s
Communications menu or press the Enter key.

34

42

Section 4: Deploying and Operating SBE 19plus V2

Command Descriptions

This section describes commands and provides sample outputs.
See Appendix III: Command Summary for a summarized command list.

When entering commands:

• Input commands to the 19plus V2 in upper or lower case letters and

register commands by pressing the Enter key.

• The 19plus V2 sends an error message if an invalid command is entered.

• (if OutputExecutedTag=N) If the 19plus V2 does not return an

S> prompt after executing a command, press the Enter key to get the
S> prompt.

• If a new command is not received within 2 minutes after the completion

of a command, the 19plus V2 returns to the quiescent (sleep) state.

• If in quiescent state, re-establish communications by selecting Connect in

Seaterm232’s Communications menu or pressing the Enter key.

• If the 19plus V2 is transmitting data and you want to stop it, press the

Esc key or type ^C. Then press the Enter key. Alternatively, select Abort
in Seaterm232’s Command menu.

• Commands to enable a parameter or output (such as enabling a voltage

channel) can be entered with the argument as Y or 1 for yes, and N or 0
for no (for example, Volt0=y and Volt0=1 are equivalent; both enable
voltage channel 0).

• The 19plus V2 cannot have samples with different scan lengths (more or

fewer data fields per sample) in memory. If the scan length is changed by
commanding it to add or subtract a data field (such as an external voltage),
the 19plus V2 must initialize logging. Initializing logging sets the sample
number and cast number to 0, so the entire memory is available for
recording data with the new scan length. Initializing logging should only
be performed after all previous data has been uploaded. Therefore,
commands that change the scan length (MM, MP, PType=, Volt0=,

)

Note:
In Profiling mode, the 19plus V2 does
not respond to TS, SL, SLT, or
GetLastSamples:x while logging or

waiting to start logging.

Volt1=, Volt2=, Volt3=, Volt4=, Volt5=, SBE38=, GTD=, DualGTD=
prompt the user for verification before executing, to prevent accidental
overwriting of existing data.

• The 19plus V2 responds only to GetCD, GetSD, GetCC, GetEC,

ResetEC, GetHD, DS, DCal, TS, SL, SLT, GetLastSamples:x, QS, and
Stop while logging. If you wake the 19plus V2 while it is logging (for

example, to send DS to check on logging progress), it temporarily stops
logging. In Moored mode, logging resumes when it goes to sleep (either
by sending QS or after the 2-minute timeout). In Profiling mode, logging
resumes immediately.

• The 19plus V2 responds only to GetCD, GetSD, GetCC, GetEC,

ResetEC, GetHD, DS, DCal, TS, SL, SLT, GetLastSamples:x, QS, and
Stop while waiting to start logging (if you sent StartLater but logging

has not started yet). To send any other commands, send Stop, send the
desired commands to modify the setup, and then send StartLater again.

Entries made with the commands are permanently stored in the 19plus V2 and
remain in effect until you change them.

• The only exception occurs if the electronics are removed from the housing

and disconnected from the battery Molex connector (see Appendix II:
Electronics Disassembly/Reassembly). Upon reassembly, reset the date
and time (DateTime=) and initialize logging (InitLogging).

35

Section 4: Deploying and Operating SBE 19plus V2

Status Commands

Notes:

• GetCD output does not include
calibration coefficients. To display
calibration coefficients, use the
GetCC command.

• The DS response contains similar
information as the combined
responses from GetSD and GetCD,
but in a different format.

GetCD Get and display configuration data, which

includes all parameters related to setup of
19plus V2, including communication settings
and sampling settings. Most of these
parameters can be user-input/modified. List
below includes, where applicable, command
used to modify parameter:

• Device type, Serial number

• Profiling mode [MP]:

- Number of scans to average [NAvg=]

- Minimum conductivity frequency for pump
turn-on [MinCondFreq=]

- Pump turn-on delay [PumpDelay=]

- Begin logging automatically when external
power applied [AutoRun=]?

- Ignore magnetic switch position for
starting/stopping logging [IgnoreSwitch=]?

• Moored mode [MM]:

- Sample interval [SampleInterval=]

- Number of measurements to take and average
per sample [NCycles=]

- Pump turn-on parameter
[MooredPumpMode=]

- Pump turn-on delay [DelayBeforeSampling=]

- Transmit data real-time?
[MooredTxRealTime=]

• Battery type [BatteryType=] and cut-off voltage

• Sample external voltages 0, 1, 2, 3, 4, and 5?

[Volt0= through Volt5=]

• Sample SBE 38 secondary temperature sensor

[SBE38=]

• Sample Gas Tension Device [GTD=], or

dual Gas Tension Devices [DualGTD=]?

• Enable echoing? [Echo=]

• Output Executing and Executed tags?

[OutputExecutedTag=]

• Output format [OutputFormat=]

• Output salinity? [OutputSal=]

(only appears if output format =
converted decimal or converted XML UVIC)

Output sound velocity? [OutputSV=]

•

(only appears if output format =
converted decimal or converted XML UVIC)

• Output sigma-t, voltage, and current with each

sample? [OutputUCSD=]
(only appears if output format =
converted decimal or converted XML UVIC)

43

36

44

Section 4: Deploying and Operating SBE 19plus V2

Status Commands (continued)

Example: 19plus V2 in Profiling mode (user input in bold, command used to modify parameter in parentheses)

getcd
<ConfigurationData DeviceType='SBE19plus' SerialNumber='01906003'>
<ProfileMode> [MP]
<ScansToAverage>1</ScansToAverage> [NAvg=]
<MinimumCondFreq>3000</MinimumCondFreq> [MinCondFreq=]
<PumpDelay>60</PumpDelay> [PumpDelay=]
<AutoRun>no</AutoRun> [AutoRun=]
<IgnoreSwitch>no</IgnoreSwitch> [IgnoreSwitch=]
</ProfileMode>
<Battery>
<Type>alkaline</Type> [BatteryType=]
<CutOff>7.5</CutOff>
</Battery>
<DataChannels>
<ExtVolt0>yes</ExtVolt0> [Volt0=]
<ExtVolt1>no</ExtVolt1> [Volt1=]
<ExtVolt2>no</ExtVolt2> [Volt2=]
<ExtVolt3>yes</ExtVolt3> [Volt3=]
<ExtVolt4>no</ExtVolt4> [Volt4=]
<ExtVolt5>no</ExtVolt5> [Volt5=]
<SBE38>no</SBE38> [SBE38=]
<GTD>no</GTD> [GTD= or DualGTD=]
</DataChannels>
<EchoCharacters>yes</EchoCharacters> [Echo=]
<OutputExecutedTag>no</OutputExecutedTag> [OutputExecutedTag=]
<OutputFormat>converted decimal</OutputFormat> [OutputFormat=]
<OutputSalinity>no</OutputSalinity> [OutputSal=]
<OutputSoundVelocity>no</OutputSoundVelocity> [OutputSV=]
<OutputSigmaT-V>no</OutputSigmaT-V> [OutputUCSD=
</ConfigurationData>

]

Example: 19plus V2 in Moored mode, with strain-gauge pressure sensor (user input in bold, command used to modify parameter in parentheses)

Getcd
<ConfigurationData DeviceType='SBE19plus' SerialNumber='01906003'>
<MooredMode> [MM]
<SampleInterval>15</SampleInterval> [SampleInterval=]
<MeasurementsPerSample>1</MeasurementsPerSample> [NCycles=]
<Pump>run pump during sample</Pump> [MooredPumpMode=]
<DelayBeforeSampling>0.0</DelayBeforeSampling> [DelayBeforeSampling=]
<TransmitRealTime>no</TransmitRealTime> [MooredTxRealTime=]
</MooredMode>
<Battery>
<Type>alkaline</Type> [BatteryType=]
<CutOff>7.5</CutOff>
</Battery>
<DataChannels>
<ExtVolt0>yes</ExtVolt0> [Volt0=]
<ExtVolt1>no</ExtVolt1> [Volt1=]
<ExtVolt2>no</ExtVolt2> [Volt2=]
<ExtVolt3>yes</ExtVolt3> [Volt3=]
<ExtVolt4>no</ExtVolt4> [Volt4=]
<ExtVolt5>no</ExtVolt5> [Volt5=]
<SBE38>no</SBE38> [SBE38=]
<GTD>no</GTD> [GTD= or DualGTD=]
</DataChannels>
<EchoCharacters>yes</EchoCharacters> [Echo=]
<OutputExecutedTag>no</OutputExecutedTag> [OutputExecutedTag=]
<OutputFormat>converted decimal</OutputFormat> [OutputFormat=]
<OutputSalinity>no</OutputSalinity> [OutputSal=]
<OutputSoundVelocity>no</OutputSoundVelocity> [OutputSV=]
<OutputSigmaT-V>no</OutputSigmaT-V> [OutputUCSD=
</ConfigurationData>

]

37

Section 4: Deploying and Operating SBE 19plus V2

Status Commands (continued)

Notes:

• The DS response contains similar
information as the combined
responses from GetSD and GetCD,
but in a different format.

• Sending GetSD causes the pump to
turn on for a moment, so that the
19plus V2 can measure and output
the pump current. Because the
pump is designed to be water
lubricated, you will hear a noise
when the impeller spins in air.
Running the pump dry for such a
short time will not harm the pump.

• In the example below, only voltage
channel 0 is enabled, so external
voltage current iext2345= (for
channels 2, 3, 4, and 5) is not
shown.

• In the example below, no RS-232
sensor is enabled, so RS-232
sensor current iserial= is not shown.

• If the 19plus V2 is set up with a WET
Labs ECO-FL fluorometer with
Bio-Wiper (Biowiper=Y) and if
OutputExecutedTag=Y, the GetSD
response shows: <Executing/>
to allow time for the Bio-Wiper to
close before it measures the
enabled external voltage currents.

GetSD Get and display status data, which contains

data that changes while deployed.
List below includes, where applicable,
command used to modify parameter:

• Device type, Serial number

• Date and time [DateTime=] in

ISO8601-2000 extended format
(yyyy – mm-ddThh:mm:ss)

• Logging status (not logging, logging,

waiting to start at . . ., or unknown status)

• Number of recorded events in event

counter [reset with ResetEC]

• Voltages and currents -

- Main battery voltage

- Back-up lithium battery voltage

- Operating current

- Pump current

- External voltage sensor current (channels
0 and 1) – displays only if 1 or more
channels enabled

- External voltage sensor current (channels
2, 3, 4, and 5) – displays only if 1 or more
channels enabled

- RS-232 sensor current – displays only if
channel enabled

• Memory - [reset with InitLogging]

- Number of bytes in memory

- Number of samples in memory

- Number of additional samples that can
be placed in memory

- Length (number of bytes) of each sample

- Number of casts in memory if in
Profiling mode; number of headers in
memory if in Moored mode

Example: Send GetSD to 19plus V2 (user input in bold, command used to modify parameter in parentheses)

getsd
<StatusData DeviceType = 'SBE19plus' SerialNumber = '01906003'>
<DateTime>2008-10-05T10:53:03</DateTime> [DateTime=]
<LoggingState>not logging</LoggingState>
<EventSummary numEvents = '0'/> [can clear with ResetEC]
<Power>
<vMain>10.1</vMain>
<vLith>8.9</vLith>
<iMain>61.9</iMain>
<iPump>20.6</iPump>
<iExt01>67.2</iExt01>
</Power>
<MemorySummary>
<Bytes>150</Bytes> [can clear with InitLogging]
<Samples>10</Samples> [can clear with InitLogging]
<SamplesFree>4386532</SamplesFree> [can clear with InitLogging]
<SampleLength>15</SampleLength>
<Profiles>1</Profiles> [can clear with InitLogging]
</MemorySummary>
</StatusData>

45

38

46

Section 4: Deploying and Operating SBE 19plus V2

Notes:

• DCal and GetCC responses contain
similar information, but in different
formats.

• Dates shown are when calibrations
were performed.

Example: 19plus V2 with strain-gauge pressure sensor (user input in bold, command used to modify coefficient in parentheses)

getcc
<CalibrationCoefficients DeviceType = 'SBE19plus' SerialNumber = '01906003'>
<Calibration format = 'TEMP1' id = 'Main Temperature'>
<SerialNum>01906003</SerialNum>
<CalDate>19-Oct-08</CalDate> [TCalDate=]
<TA0>1.155787e-03</TA0> [TA0=]
<TA1>2.725208e-04</TA1> [TA1=]
<TA2>-7.526811e-07</TA2> [TA2=]
<TA3>1.716270e-07</TA3> [TA3=]
<TOFFSET>0.000000e+00</TOFFSET> [TOffset=]
</Calibration>
<Calibration format = 'WBCOND0' id = 'Main Conductivity'>
<SerialNum>01906003</SerialNum>
<CalDate>19-Oct-08</CalDate> [CCalDate=]
<G>-1.006192e+00</G> [CG=]
<H>1.310565e-01</H> [CH=]
<I>-2.437852e-04</I> [CI=]
<J>3.490353e-05</J> [CJ=]
<CPCOR>-9.570000e-08</CPCOR> [CPCor=]
<CTCOR>3.250000e-06</CTCOR> [CTCor=]
<CSLOPE>1.000000e+00</CSLOPE> [CSlope=]
</Calibration>
<Calibration format = 'STRAIN0' id = 'Main Pressure'>
<SerialNum>01906003</SerialNum>
<CalDate>27-Oct-08</CalDate> [PCalDate=]
<PA0>-5.137085e-02</PA0> [PA0=]
<PA1>1.550601e-03</PA1> [PA1=]
<PA2>7.210415e-12</PA2> [PA2=]
<PTCA0>5.154159e+05</PTCA0> [PTCA0=]
<PTCA1>2.560262e-01</PTCA1> [PTCA1=]
<PTCA2>-8.533080e-02</PTCA2> [PTCA2=]
<PTCB0>2.426612e+01</PTCB0> [PTCB0=]
<PTCB1>-7.750000e-04</PTCB1> [PTCB1=]
<PTCB2>0.000000e+00</PTCB2> [PTCB2=]
<PTEMPA0>-7.667877e+01</PTEMPA0> [PTempA0=]
<PTEMPA1>4.880376e+01</PTEMPA1> [PTempA1=]
<PTEMPA2>-4.555938e-01</PTEMPA2> [PTempA2=]
<POFFSET>0.000000e+00</POFFSET> [POffset= (decibars)]
<PRANGE>1.000000e+03</PRANGE> [PRange= (psia)]
</Calibration>
<Calibration format = 'VOLT0' id = 'Volt 0'>
<OFFSET>0.000000e+00</OFFSET> [VOffset0=]
<SLOPE>1.260977e+00</SLOPE> [VSlope0=]
</Calibration>
<Calibration format = 'VOLT0' id = 'Volt 1'>
<OFFSET>-4.728750e-02</OFFSET> [Voffset1=]
<SLOPE>1.259474e+00</SLOPE> [VSlope1=]
</Calibration>
<Calibration format = 'VOLT0' id = 'Volt 2'>
<OFFSET>-4.715313e-02</OFFSET> [Voffset2=]
<SLOPE>1.259946e+00</SLOPE> [VSlope2=]
</Calibration>
<Calibration format = 'VOLT0' id = 'Volt 3'>
<OFFSET>-4.772396e-02</OFFSET> [Voffset3=]
<SLOPE>1.260486e+00</SLOPE> [VSlope3=]
</Calibration>
<Calibration format = 'VOLT0' id = 'Volt 4'>
<OFFSET>-4.765417e-02</OFFSET> [Voffset4=]
<SLOPE>1.260014e+00</SLOPE> [VSlope4=]
</Calibration>
<Calibration format = 'VOLT0' id = 'Volt 5'>
<OFFSET>-4.744167e-02</OFFSET> [Voffset5=]
<SLOPE>1.260255e+00</SLOPE> [VSlope5=]
</Calibration>
<Calibration format = 'FREQ0' id = 'external frequency channel'>
<EXTFREQSF>1.000000e+00</EXTFREQSF> [ExtFreqSF=]
</Calibration>
</CalibrationCoefficients>

Status Commands (continued)

GetCC Get and display calibration coefficients,

which are initially factory-set and should
agree with Calibration Certificates shipped
with 19plus V2.

39

Section 4: Deploying and Operating SBE 19plus V2

Status Commands (continued)

GetEC Get and display event counter data, which

can help to identify root cause of a
malfunction. Event counter records
number of occurrences of common
timeouts, power-on resets, etc. Can be
cleared with ResetEC. Possible events that
may be logged include:

• Power fail – main batteries and/or external

voltage below voltage cutoff

• EEPROM read or EEPROM write – all

power removed (main batteries removed, and
back-up lithium batteries are dead)

• Alarm short – woke up 19plus V2 to send a

command while logging in Moored mode

• Alarm long –sent StartLater, but

StartDateTime= is more than 1 month in

future

• AD7730 timeout – response from

temperature and pressure A/D converter
delayed; typically if woke up to send a
command while logging in Moored mode

• AD7714 timeout – response from voltage

channel A/D converter delayed; typically if
woke up to send a command while logging
in Moored mode

• FLASH out of memory – all available

memory space is used; autonomous sampling
continues, but no additional data written to
FLASH (does not overwrite)

• FLASH correctable error – single bit error in

a page, corrects itself, does not affect data

• FLASH ECC error – does not affect data

• FLASH timeout – problem with FLASH

• FLASH ready – problem with FLASH;

timeout error

• FLASH erase failed – problem with FLASH

• FLASH write failed – problem with FLASH

• FLASH uncorrectable – problem with

FLASH; 2 or more bits of errors in a page

• FLASH block overrun – problem with

FLASH

• New bad block – problem with FLASH;

FLASH write or erase failed, or a FLASH
uncorrectable error

47

Example: (user input in bold, command used to modify parameter in parentheses)

getec

<EventCounters DeviceType = 'SBE19plus' SerialNumber = '01906003'>
<EventSummary numEvents = '1'/> [can clear with ResetEC]

<Event type='alarm short' count='1'/>
</EventCounters>

ResetEC Delete all events in event counter (number

of events displays in GetSD response, and
event details display in GetEC response).

40

48

Section 4: Deploying and Operating SBE 19plus V2

Status Commands (continued)

GetHD Get and display hardware data, which is

fixed data describing 19plus V2:

Note:

External sensor types and serial
numbers can be changed in the field,
to accommodate changes in auxiliary
sensors cabled to the 19plus V2.
Other hardware data is typically not
changed by the user.

Example: (user input in bold, command used to modify parameter in parentheses)

gethd

<HardwareData DeviceType = 'SBE19plus' SerialNumber = '01906003'>
<Manufacturer>Sea-Bird Electronics, Inc.</Manufacturer>
<FirmwareVersion>2.1</FirmwareVersion>
<FirmwareDate>24 September 2008 13:00</FirmwareDate>
<CommandSetVersion>1.0</CommandSetVersion>
<PCBAssembly PCBSerialNum = 'not assigned' AssemblyNum = '41054F'/> [SetPcbSerialNum1=, SetPCBAssembly1=]
<PCBAssembly PCBSerialNum = 'not assigned' AssemblyNum = '41580'/> [SetPcbSerialNum2=, SetPCBAssembly2=]
<PCBAssembly PCBSerialNum = 'not assigned' AssemblyNum = '41056E'/> [SetPcbSerialNum3=, SetPCBAssembly3=]
<PCBAssembly PCBSerialNum = 'not assigned' AssemblyNum = '41059D'/> [SetPcbSerialNum4=, SetPCBAssembly4=]
<MfgDate>03 october 2008</MfgDate> [SetMfgDate=]
<InternalSensors>
<Sensor id = 'Main Temperature'>
<type>temperature0</type>
<SerialNumber>01906003</SerialNumber>
</Sensor>
<Sensor id = 'Main Conductivity'>
<type>conductivity-0</type>
<SerialNumber>01906003</SerialNumber>
</Sensor>
<Sensor id = 'Main Pressure'>
<type>strain-0</type> [PType=]
<SerialNumber>2580011</SerialNumber>
</Sensor>
</InternalSensors>
<ExternalSensors>
<Sensor id = 'volt 0'>
<type>not assigned</type> [SetVoltType0=]
<SerialNumber>not assigned</SerialNumber> [SetVoltSN0=]
</Sensor>
<Sensor id = 'volt 1'>
<type>not assigned</type> [SetVoltType1=]
<SerialNumber>not assigned</SerialNumber> [SetVoltSN1=]
</Sensor>
<Sensor id = 'volt 2'>
<type>not assigned</type> [SetVoltType2=]
<SerialNumber>not assigned</SerialNumber> [SetVoltSN2=]
</Sensor>
<Sensor id = 'volt 3'>
<type>not assigned</type> [SetVoltType3=]
<SerialNumber>not assigned</SerialNumber> [SetVoltSN3=]
</Sensor>
<Sensor id = 'volt 4'>
<type>not assigned</type> [SetVoltType4=]
<SerialNumber>not assigned</SerialNumber> [SetVoltSN4=]
</Sensor>
<Sensor id = 'volt 5'>
<type>not assigned</type> [SetVoltType5=]
<SerialNumber>hi there</SerialNumber> [SetVoltSN5=]
</Sensor>
</ExternalSensors>
</HardwareData>

• Device type, Serial number

• Manufacturer

• Firmware version

• Firmware date

• Command set version

• PCB serial number and assembly number

• Manufacture date

• Internal sensor types and serial numbers

• External sensor types (for example,

dissolved oxygen, fluorometer, etc.) and
serial numbers

41

Section 4: Deploying and Operating SBE 19plus V2

Status Commands (continued)

Notes:

• The DS response contains similar
information as the combined
responses from GetSD and GetCD,
but in a different format.

• Sending DS causes the pump to turn
on for a moment, so that the
19plus V2 can measure and output
the pump current. Because the
pump is designed to be water
lubricated, you will hear a noise
when the impeller spins in air.
Running the pump dry for such a
short time will not harm the pump.

• In the examples below, only voltage
channel 0 is enabled, so external
voltage current iext2345= (for
channels 2, 3, 4, and 5) is not
shown.

• In the examples below, no RS-232
sensor is enabled, so RS-232
sensor current iserial= is not shown.

• If the 19plus V2 is set up for dual
GTDs, the DS response shows:
Dual Gas Tension Device = Yes

• If the 19plus V2 is set up with a WET
Labs ECO-FL fluorometer with Bio­Wiper (Biowiper=Y), the DS
response shows: wait

4 seconds for biowiper to
close before it measures the

enabled external voltage currents.

Example: Profiling mode (user input in bold, command used to modify parameter in parentheses)

DS
SeacatPlus V 2.1 SERIAL NO. 4000 20 Oct 2008 14:02:13 [DateTime=]

vbatt = 10.1, vlith = 8.9, ioper = 61.9 ma, ipump = 20.8 ma,
iext01 = 76.2 ma,
status = not logging
number of scans to average = 1 [NAvg=]
samples = 10, free = 4386532, casts = 1 [can clear with InitLogging]
mode = profile, minimum cond freq = 3000, pump delay = 60 sec [MP, MinCondFreq=, PumpDelay=]

autorun = no, ignore magnetic switch = no [AutoRun=, IgnoreSwitch=]
battery type = alkaline, battery cutoff = 7.5 volts [BatteryType=]
pressure sensor = strain gauge, range = 1000.0 [PType=, PRange=]
SBE 38 = no, Gas Tension Device = no [SBE38=, GTD=, DualGTD=]
Ext Volt 0 = yes, Ext Volt 1 = no [Volt0= and Volt1=]
Ext Volt 2 = no, Ext Volt 3 = no [Volt2= and Volt3=]
Ext Volt 4 = no, Ext Volt5 = no [Volt4= and Volt5=]
echo characters = yes [Echo=]
output format = converted decimal [OutputFormat=]
output salinity = no, output sound velocity = no [OutputSal=, OutputSV=]

DS Get and display operating status and

configuration parameters, which vary
depending on whether in Profiling or
Moored mode.
List below includes, where applicable,
command used to modify parameter.

Profiling Mode (MP)

• Firmware version, serial number, date and time

[DateTime=]

• Voltages and currents (main and back-up

lithium battery voltages, currents – operating,
pump, external voltage sensors, RS-232 sensor)

• Logging status (not logging, logging, waiting to

start at . . ., or unknown status)

• Number of scans to average [NAvg=]

• Number of samples, sample space, and number

of casts in memory

• Profiling mode [MP], minimum conductivity

frequency for pump turn-on [MinCondFreq=],
and pump turn-on delay [PumpDelay=]

• Begin logging automatically when external

power applied [AutoRun=]?
Ignore magnetic switch position for
starting/stopping logging [IgnoreSwitch=]?

• Battery type [BatteryType=] and cut-off

voltage

• Pressure type [PType=] and range [PRange=]

• Sample RS-232 sensor - SBE 38 [SBE38=], Gas

Tension Device [GTD=], or dual Gas Tension
Devices [DualGTD=]?

• Sample external voltages 0, 1, 2, 3, 4, and 5

[Volt0= through Volt5=]?

• Show entered commands on screen as you type

[Echo=]?

• Output format [OutputFormat=]

• Output salinity [OutputSal=] and sound

velocity [OutputSV=] with each sample?
(only if output format = converted decimal or
converted XML UVIC)
Output sigma-t, voltage, and current with each

•

sample? [OutputUCSD=]
(only if output format = converted decimal or
converted XML UVIC; and if set to Y)

49

42

50

Section 4: Deploying and Operating SBE 19plus V2

Status Commands (continued)

Moored Mode (MM)

• Firmware version, serial number, date

and time [DateTime=]

• Voltages and currents (main and back-up

lithium battery voltages, currents –
operating, pump, external voltage sensors,
RS-232 sensor)

• Logging status (not logging, logging, waiting

to start at . . ., or unknown status)

• Sample interval [SampleInterval=] and

number of measurements to take and average
per sample [NCycles=]

• Number of samples and available sample

space in memory

• Moored mode [MM], pump turn-on

parameter [MooredPumpMode=], and
pump turn-on delay
[DelayBeforeSampling=]

• Transmit data real-time?

[MooredTxRealTime=]

• Battery type [BatteryType=] and battery

cut-off voltage

• Pressure type [PType=] and range

[PRange=]

• Sample RS-232 sensor - SBE 38 [SBE38=],

Gas Tension Device [GTD=], or dual Gas
Tension Devices [DualGTD=]?

• Sample external voltages 0, 1, 2, 3, 4, and 5

[Volt0= through Volt5=]?

• Show entered commands on screen as you

type [Echo=]?

• Output format [OutputFormat=]

• Output salinity [OutputSal=] and sound

velocity [OutputSV=] with each sample?
(only appears if output format =
converted decimal or converted XML UVIC)

• Output sigma-t, voltage, and current with

each sample? [OutputUCSD=]
(only appears if output format =
converted decimal or converted XML UVIC;
and if set to Y)

Example: Moored mode (user input in bold, command used to modify parameter in parentheses)

DS
SeacatPlus V 2.1 SERIAL NO. 4000 20 Oct 2008 14:02:13 [DateTime=]

vbatt = = 10.1, vlith = 8.9, ioper = 61.9 ma, ipump = 20.8 ma,
iext01 = 76.2 ma,
status = not logging
sample interval = 15 seconds, number of measurements per sample = 1 [SampleInterval=, NCycles=]
samples = 0, free = 1644953 [reset with InitLogging]
mode = moored, run pump for 0.5 sec, delay before sampling = 0.0 seconds

transmit real-time = yes [MooredTxRealTime=]
battery type = alkaline, battery cutoff = 7.5 volts [BatteryType=]
pressure sensor = strain gauge, range = 2000.0 [PType=, PRange=]
SBE 38 = no, Gas Tension Device = no [SBE38=, GTD=, DualGTD=]
Ext Volt 0 = yes, Ext Volt 1 = no [Volt0= and Volt1=]
Ext Volt 2 = no, Ext Volt 3 = no [Volt2= and Volt3=]
Ext Volt 4 = no, Ext Volt 5 = no [Volt4= and Volt5=]
echo characters = yes [Echo=]
output format = converted decimal [OutputFormat=]
output salinity = no, output sound velocity = no [OutputSal=, OutputSV=]

[MM, MOOREDPUMPMODE=, DELAYBEFORESA MPLING=]

43

Section 4: Deploying and Operating SBE 19plus V2

Status Commands (continued)

Notes:

• The DCal and GetCC responses
contain the same information, but
in different formats.

• Dates shown are when
calibrations were performed.

DCal Get and display calibration coefficients,

which are initially factory-set and should
agree with Calibration Certificates shipped
with 19plus V2.

Example: 19plus V2 with strain-gauge pressure sensor (user input in bold, command used to modify coefficient
in parentheses).

dcal
SeacatPlus V 2.1 SERIAL NO. 0003 20 Oct 2008 14:46:05 [DateTime=]
temperature: 20-jul-08 [TCalDate=]
TA0 = -3.178124e-06 [TA0=]
TA1 = 2.751603e-04 [TA1=]
TA2 = -2.215606e-06 [TA2=]
TA3 = 1.549719e-07 [TA3=]
TOFFSET = 0.000000e+00 [TOffset=]
conductivity: 20-jul-08 [CCalDate=]
G = -9.855242e-01 [CG=]
H = 1.458421e-01 [CH=]
I = -3.290801e-04 [CI=]
J = 4.784952e-05 [CJ=]
CPCOR = -9.570000e-08 [CPCor=]
CTCOR = 3.250000e-06 [CTCor=]
CSLOPE = 1.000000e+00 [CSlope=]
pressure S/N , range = 2000 psia: 14-jul-08 [PRange= (psia), PCalDate=]
PA0 = 0.000000e+00 [PA0=]
PA1 = 0.000000e+00 [PA1=]
PA2 = 0.000000e+00 [PA2=]
PTEMPA0 = 0.000000e+00 [PTempA0=]
PTEMPA1 = 0.000000e+00 [PTempA1=]
PTEMPA2 = 0.000000e+00 [PTempA2=]
PTCA0 = 0.000000e+00 [PTCA0=]
PTCA1 = 0.000000e+00 [PTCA1=]
PTCA2 = 0.000000e+00
PTCB0 = 0.000000e+00 [PTCB0=]
PTCB1 = 0.000000e+00 [PTCB1=]
PTCB2 = 0.000000e+00 [PTCB2=]
POFFSET = 0.000000e+00 [POffset= (decibars)]
volt 0: offset = 0.000000e+00, slope = 1.000000e+00 [VOffset0=, VSlope0=]
volt 1: offset = 0.000000e+00, slope = 1.000000e+00 [Voffset1=, VSlope1=]
volt 2: offset = 0.000000e+00, slope = 1.000000e+00 [Voffset2=, VSlope2=]
volt 3: offset = 0.000000e+00, slope = 1.000000e+00 [Voffset3=, VSlope3=]
volt 4: offset = 0.000000e+00, slope = 1.000000e+00 [Voffset4=, VSlope4=]
volt 5: offset = 0.000000e+00, slope = 1.000000e+00 [Voffset5=, VSlope5=]
EXTFREQSF = 1.000000e+00 [ExtFreqSF=]

[PTCA2=]

51

44

52

Section 4: Deploying and Operating SBE 19plus V2

General Setup Commands

DateTime=mmddyyyyhhmmss Set real-time clock month, day, year, hour,

minute, second.

Example: Set current date and time to 05 October 2007 12:05:00 (user input in bold).

datetime=10052007120500

Notes:

• The 19plus V2 baud rate (set with

BaudRate=) must be the same as
Seaterm232’s baud rate (set in the
Communications menu).

• An RS-232 sensor (SBE 38 or GTD)
integrated with the 19plus V2 must
use the same baud rate as the
19plus V2. See the RS-232 sensor’s
manual to set its baud.

• BaudRate= must be sent twice.
After the first entry, the 19plus V2
changes to the new baud, and then
waits for the command to be sent
again at the new baud (In the
Communications menu, select
Configure. In the dialog box, select
the new baud rate and click OK.
Then retype the command.). This
prevents you from accidentally
changing to a baud that is not
supported by your computer. If it
does not receive the command
again at the new baud, it reverts to
the previous baud rate.

BaudRate=x x= baud rate (600, 1200, 2400, 4800,

9600, 19200, 38400, 57600, or 115200).
Default 9600. Check capability of your
computer and terminal program before
increasing baud rate. Command must be

sent twice to change rate.

Echo=x x=Y: Echo characters received from

computer (default) - monitor will show
entered commands as you type.

x=N: Do not.

OutputExecutedTag=x x=Y: Display XML Executing and

Executed tags (default). Executed tag
displays at end of each command
response; Executing tag displays one or
more times if 19plus V2 response to a
command requires additional time.

x=N: Do not.

Example: Set 19plus V2 to output Executed and Executing tags (user input in bold).

outputexecutedtag=y

<Executed/>getcd
. . . (GetCD response)

<Executed/>

(Note: <Executed/> tag at end of command response takes place of S> prompt.)

BatteryType=x x=alkaline: Alkaline batteries (also use

this setting for lithium batteries). Logging
stops when voltage drops below 7.5 volts
for 5 consecutive scans. This reduces
battery load to quiescent current.

x=nicad: Ni-Cad batteries. Logging stops
when voltage drops below 7.5 volts for
5 consecutive scans or voltage is less than

10.9 volts and voltage drop is greater than

0.5 volts/minute as determined by two
30-second moving averages. This reduces
battery load to quiescent current once first
cell in battery pack is exhausted.

x=nimh: NiMH batteries. Logging stops
when voltage drops below 7.8 volts for
5 consecutive scans or voltage is less than

8.7 volts and voltage drop is greater than

0.2 volts/minute as determined by two 30­second moving averages. This reduces
battery load to quiescent current once first
cell in battery pack is exhausted.

45

Section 4: Deploying and Operating SBE 19plus V2

53

Notes:

• The 19plus V2 requires verification
when InitLogging,

SampleNumber=, or
HeaderNumber= are sent.

19plus V2 responds:

this command will change the
scan length and/or initialize
logging. Repeat the command to
verify.

Type the command again and press
the Enter key to proceed. The
19plus V2 responds:

Scan length has changed,
initializing logging

•

InitLogging and SampleNumber=0

have identical effects. Use either to
initialize logging.

• Do not initialize logging until all
data has been uploaded. These

commands do not delete data; they
reset the data pointer. If you

accidentally initialize logging
before uploading, recover data as

follows:

1. Set SampleNumber=a and

HeaderNumber=b, where a and b are
your estimate of number of samples
and casts in memory.

2. Upload data. If a is more than actual

number of samples or b is more than
actual number of casts in memory,
data for non-existent samples/casts
will be bad, random data. Review
uploaded data file carefully and delete
any bad data.

3. If desired, increase a and/or b and

upload data again, to see if there is
additional valid data in memory.

Note:

The 19plus V2 automatically enters
quiescent (sleep) state after 2 minutes
without receiving a command. This
timeout algorithm is designed to
conserve battery energy if the user
does not send QS to put the 19plus V2
to sleep.

General Setup Commands (continued)

InitLogging Initialize logging - after all previous data

has been uploaded, initialize logging
before starting to sample again to make
entire memory available for recording.
InitLogging sets sample number
(SampleNumber=) and header and cast
number (HeaderNumber=) to 0
(sampling will start with sample 1 and
cast/header 1). If not set to 0, data will be
stored after last recorded sample. Do not

send InitLogging until all existing data
has been uploaded.

SampleNumber=x x= sample number for last sample in

memory. After all previous data has been
uploaded, send SampleNumber=0 (sets
sample number and header / cast number
to 0) before starting to sample to make
entire memory available for recording
(sampling will start with sample 1 and
header 1). If not set to 0, data will be
stored after last recorded sample. Do not

send SampleNumber=0 until all existing
data has been uploaded.

HeaderNumber=x x= header and cast number for last cast or

header in memory. Typically used to
recover data if you accidentally initialize
logging (using InitLogging or
SampleNumber=0) before uploading all
existing data. 19plus V2 can have a
maximum of 1000 stored headers.
Note that 19plus V2 writes a new header:

- each time logging is started in
Profiling Mode

- each time logging is started and after
every 2000 samples are stored in memory
in Moored Mode.

QS Quit session and place 19plus V2 in

quiescent (sleep) state. Main power turned
off. Data logging and memory retention not
affected.

46

54

Section 4: Deploying and Operating SBE 19plus V2

Pressure and Voltage Sensor Setup Commands

Notes:

• The 19plus V2 requires verification
when these commands (PType=
through Volt5=) are sent. The
19plus V2 responds:

this command will change
the scan length and/or
initialize logging. Repeat
the command to verify.

Type the command again and press
the Enter key to proceed. The
19plus V2 responds:

Scan length has changed,
initializing logging

• The 19plus V2 configuration (.con)
file must match this selection of
pressure sensor and external
voltages when viewing real-time
data in SEASAVE or processing
uploaded data. View and edit the
.con file in SEASAVE or SBE Data
Processing. These parameters are
factory-set to match the ordered
instrument configuration.

• External voltage numbers 0, 1, 2, 3,
4, and 5 correspond to wiring of
sensors to a voltage channel on the
19plus V2 end cap (see Dimensions

and End Cap Connectors in Section
2: Description of SBE 19plus V2).

However, in the .con file, voltage 0 is
the first external voltage in the data
stream, voltage 1 is the second, etc.

PType=x Pressure sensor type.

x=1: Strain-gauge.

x=3: Quartz with temperature

compensation. Requires even NCycles=
(2, 4, 6, etc.) for Moored mode and even

NAvg= for Profiling mode.

Volt0=x x=Y: Enable external voltage 0.

x=N: Do not.

Volt1=x x=Y: Enable external voltage 1.

x=N: Do not.

Volt2=x x=Y: Enable external voltage 2.

x=N: Do not.

Volt3=x x=Y: Enable external voltage 3.

x=N: Do not.

Volt4=x x=Y: Enable external voltage 4.

x=N: Do not.

Volt5=x x=Y: Enable external voltage 5.

x=N: Do not.

Note:
If an ECO-FL with Bio-Wiper is
installed and Biowiper=N, sending
GetSD or DS will open the Bio-Wiper,
but not provide enough powered time
to close it again. If you then deploy the
instrument in Moored mode (MM) with
the Bio-Wiper open and with a delayed
start time, the ECO-FL may become
fouled because the Bio-Wiper will
remain open until the first sample is
completed.

Example: Enable voltage sensors wired to channels 0 and 3 on end cap (user
input in bold).

VOLT0=Y
VOLT1=N
VOLT2=N
VOLT3=Y
VOLT4=N
VOLT5=N

There will be 2 external sensor voltages in data stream. In .con file (in SBE Data
Processing or SEASAVE), indicate 2 external voltage channels. Voltage 0
corresponds to sensor wired to external voltage channel 0; voltage 1 corresponds
to sensor wired to external voltage channel 3.

Biowiper=x x=Y: Configuration includes WET Labs

ECO-FL fluorometer with Bio-Wiper.
With this setup, 19plus V2 is powered
longer for DS and GetSD, providing
sufficient time for Bio-Wiper to open and
then shut again if in Moored mode if Bio­Wiper is set up to take 1 measurement for
each sample (see Application Note 72).

x=N (default): No ECO-FL with
Bio-Wiper.

47

Section 4: Deploying and Operating SBE 19plus V2

RS-232 Sensor Setup Commands

Notes:

• The 19plus V2 requires verification
when SBE38=, GTD=, or DualGTD=
is sent. The 19plus V2 responds:

this command will change the
scan length and/or initialize
logging. Repeat the command to
verify.

Type the command again and press
the Enter key to proceed. The
19plus V2 responds:

Scan length has changed,
initializing logging

• The 19plus V2 configuration (.con)
file must match this selection of
RS-232 sensor when viewing real­time data or processing uploaded
data. View and edit the .con file in
SEASAVE or SBE Data Processing.
These parameters are factory-set to
match the ordered instrument
configuration.

• You can use Seaterm232 to

communicate directly with the
SBE 38 (when the sensor is
connected directly to the computer).
Alternatively, use the older
SEATERM software, as documented
in the manual for the SBE 38.

•

See the SBE 38 or Pro-Oceanus
GTD manual for command details
for these instruments.

The SBE 19plus V2 can interface with an SBE 38 secondary temperature
sensor, or up to 2 Pro-Oceanus Gas Tension Devices (GTDs).

Setup for SBE 38:

Set up SBE 38 to interface with SBE 19plus V2, before you connect it to
19plus V2. Connect SBE 38 directly to computer, power with an external
power supply, and (using SEATERM or Seaterm232) set:

• Baud rate to same baud rate as 19plus V2 (Baud=)

• Interface to RS-232 (Interface=232)

• Sampling to begin when power applied (AutoRun=Y)

• Output to converted data (Format=C)

Connect SBE 38 to SBE 19plus V2 RS-232 bulkhead connector, using
provided cable. In the 19plus V2, set SBE38=Y to enable interface.

SBE38=x x=Y: Enable RS-232 SBE 38 secondary

temperature sensor.

x=N: Do not enable SBE 38.

Note:

In Moored mode, the 19plus V2
sample interval (SampleInterval=)
must be greater than or equal to the
sum of the times required to sample.
Total time is affected by the following:

- Programmable pressure

integration time for GTD.

- Programmable temperature

integration time for GTD.

- Minimum time required for 19plus V2

to take a sample (≈ 2.5 sec).

- Time required for 19plus V2 to take

and average NCycles= samples;
samples are taken 0.25 sec apart.

- Delay after providing power to

external voltage sensors before
sampling (DelayBeforeSampling=).

- Time required to run pump before

sampling (0.5 sec if
MooredPumpMode=1).

Setup for GTD:

SBE 19plus V2 must be in Moored mode (MM) to obtain GTD data; it
cannot obtain GTD data in Profiling mode (MP). Set up GTD to interface with
SBE 19plus V2, before you connect it to 19plus V2. Connect GTD directly to
computer, power with an external power supply, and (using software provided
by Pro-Oceanus) set:

• Baud rate to same baud rate as 19plus V2.

• Output to millibars.

• Sum of pressure integration time and temperature integration time so

that GTD responds to a take pressure reading command in 40 seconds or
less (required so that 19plus V2 does not time out while waiting for reply).

Connect GTD to SBE 19plus V2 RS-232 bulkhead connector, using provided
cable (end labeled Pro-Oceanus to GTD and end labeled Sea-Bird to 19plus
V2). In the 19plus V2, set:

• GTD=Y or DualGTD=Y to enable interface.

• SendGTD= to change IDs if necessary.

Each time a sample is to be taken, 19plus V2 sends following commands to
GTD (ID= 01, 02, etc.):

• *ID00VR <CR><LF> - get GTD firmware version; wait up to 3 seconds for reply.

• *ID00SN <CR><LF> - get GTD serial number; wait up to 5 seconds for reply.

• *9900P5 <CR><LF> - command all GTDs to sample pressure; hold data in GTD.

• *ID00DB <CR.<LF> - get held pressure; wait up to 90 seconds for reply.

• *9900Q5 <CR><LF> - command all GTDs to sample temperature; hold data in GTD.

• *ID00DB <CR.<LF> - get held temperature; wait up to 90 seconds for reply.

55

48

56

Section 4: Deploying and Operating SBE 19plus V2

RS-232 Sensor Setup Commands (continued)

Notes:

• A 19plus V2 with dual GTDs is
shipped with a Y-cable installed for
the GTDs. The GTD ends are
labeled GTD #1 and #2, and Sea­Bird set the GTD IDs to match.

• If DualGTD=Y, setting for GTD= has
no effect.

GTD=x x=Y: Enable RS-232 GTD.

x=N: Do not enable GTD.

DualGTD=x x=Y: Enable dual (2) GTDs.

x=N: Do not enable dual GTDs.

TGTD Measure GTD(s), output 1 sample of data

from each GTD (firmware version, serial
number, pressure, and temperature).

Example: Output GTD data for system with dual GTDs (user input in bold):

TGTD

GTD#1 VR reply = *0001VR=s2.03 (GTD firmware version)
GTD#2 VR reply = *0002VR=s2.03 (GTD firmware version)
GTD#1 SN reply = *0001SN = 75524 (GTD serial number)
GTD#2 SN reply = *0002SN = 81440 (GTD serial number)
GTD#1 pressure reply = *00011010.04661, p = 101004661 (millibars x 10
GTD#2 pressure reply = *00021010.01580, p = 101001580 (millibars x 10
GTD#1 temperature reply = *000123.49548, t = 23.4955 (°C)
GTD#2 temperature reply = *000223.0357038, t = 23.0357 (°C)

5

)

5

)

SendGTD=command Command 19plus V2 to send command to

GTD and receive response; command can
be any command recognized by GTD
(see GTD manual).

Examples: (user input in bold)

Send firmware version command to GTD #1:

SENDGTD=*0100vr

Sending GTD: **0100vr
GTD RX = *0001VR=s2.03

Send serial number command to GTD #2:

SENDGTD=*0200sn

Sending GTD: **0200sn
GTD RX = *0002SN=81440

49

Section 4: Deploying and Operating SBE 19plus V2

Output Format Setup Commands

See Data Output Formats after the command descriptions for complete details
on all the formats.

Note:
Output format does not affect how
data is stored in FLASH memory.

Sea-Bird’s real-time data acquisition
(SEASAVE) and data processing
(SBE Data Processing) software
require data in raw hexadecimal
(OutputFormat=0).

Typical use of the output format
command is:

• Before beginning logging:

¾ If you will use SEASAVE to view

real-time data - Set output format

to raw hex.

¾ If you will use Seaterm232 to

view real-time data - Set output

format to converted decimal for
ease in viewing real-time data.

• After stopping sampling, use
Seaterm232’s Upload menu to
upload data from memory. This
automatically uploads the data in
raw hex (regardless of the
OutputFormat= setting), so the
uploaded data is compatible with
SBE Data Processing for processing
and with SEASAVE for viewing
archived data.

OutputFormat=x x=0: Output raw frequencies and voltages

in hexadecimal. Must use this format for

acquiring and viewing real-time data in
SEASAVE. When using Seaterm232’s

Upload menu, Seaterm232 always uploads
data from memory in raw hex (compatible
with SBE Data Processing), regardless of
user-programmed OutputFormat=.

x=1: Output converted (engineering units)
data in hexadecimal.

x=2: Output raw frequencies and voltages
in decimal.

x=3: Output converted (engineering units)
data in decimal.

x=4: Output pressure and scan number
only, in hexadecimal. Typically used only
for interfacing with Auto Fire Module
(AFM) and SBE 32 Carousel Water
Sampler or with SBE 55 ECO Water
Sampler (for autonomous water sampling).

x=5: Output converted (engineering units)
data in decimal, in XML.

OutputSal=x x=Y: Calculate and output salinity (psu).

Only applies if OutputFormat=3 or 5.

x=N: Do not.

OutputSV=x x=Y: Calculate and output sound velocity

(m/sec), using Chen and Millero formula
(UNESCO Technical Papers in Marine
Science #44). Only applies if

OutputFormat=3 or 5.

x=N: Do not.

OutputUCSD=x x=Y: Calculate and output density sigma-t

3

(kg/m

), battery voltage, and operating
current (mA) with data polled while
logging. Voltage and current measured
after delay before sampling, but before
sampling. Operating current measured and
output only if in Moored mode. Only
applies if OutputFormat=3 or 5.

x=N: Do not.

57

50

58

Section 4: Deploying and Operating SBE 19plus V2

Note:

The 19plus V2 requires verification
when MP is sent. 19plus V2 responds:

this command will change the
scan length and/or
initialize logging. Repeat
the command to verify.

Type the command again and press
the Enter key to proceed.
The 19plus V2 responds:

Scan length has changed,
initializing logging

Profiling Mode Setup Commands

Profiling mode setup commands following MP apply to Profiling mode
only, and have no effect on operation if the 19plus V2 is in Moored mode.

MP Set 19plus V2 to Profiling mode.

NAvg=x x= number of samples to average

(default 1, maximum 32,767). 19plus V2
samples at 4 Hz (every 0.25 seconds) and

Note:

For a 19plus V2 with optional Quartz
pressure sensor, NAvg= must be an
even number (2, 4, etc.); increasing
NAvg= reduces the measurement
noise. See Specifications in Section 2:
Description of SBE 19plus V2 to
determine resolution.

Example: 19plus V2 samples every 0.25 seconds. If NAvg=2, 19plus V2
averages data from 2 samples (= 1 averaged data sample per 0.5 seconds), stores
averaged data in FLASH memory, and transmits averaged data real-time.

MinCondFreq=x x= minimum conductivity frequency (Hz)

averages NAvg samples; averaged data is
stored in FLASH memory and transmitted
real-time.

to enable pump turn-on, to prevent pump
from turning on before 19plus V2 is in
water. Pump stops when conductivity
frequency drops below

MinCondFreq=.

19plus V2 Configuration Sheet lists
uncorrected (raw) frequency output at
0 conductivity. Typical value (and factory­set default) for

MinCondFreq= for salt

water and estuarine application is:
(0 conductivity frequency + 500 Hz).

Note:

See Pump Operation – Profiling Mode.

Typical value for

MinCondFreq= for fresh

water applications is:
(0 conductivity frequency + 5 Hz).

PumpDelay=x x= time (seconds) to wait after minimum

conductivity frequency (MinCondFreq=) is
reached before turning pump on. Pump
delay time allows time for Tygon tubing
and pump to fill with water after 19plus
V2 is submerged.
Pump starts

PumpDelay= seconds after

conductivity cell’s frequency output is
greater than

MinCondFreq=.

Typical value 30 - 45 seconds; range
0 – 600 seconds. Default 60 seconds.

Notes:

To start sampling immediately after
you send AutoRun=Y (if you were
performing setup on external power):

• Send QS to put 19plus V2 in
quiescent (sleep) state, and then
turn external power off and then on
again. or

• Send StartNow.

AutoRun=x x=Y: Start logging automatically when

external power applied; stop logging when
external power removed. Magnetic switch
position has no effect on logging.

x=N: Wait for command when external
power applied. Default.

IgnoreSwitch=x x=Y: Do not start or stop logging based on

position of magnetic switch. Use
StartNow, StartLater, and Stop to
control logging.

x=N: Do not ignore magnetic switch
position. Logging controlled by switch
position or by commands. Default.

51

Section 4: Deploying and Operating SBE 19plus V2

Moored Mode Setup Commands

Note:

The 19plus V2 requires verification
when MM is sent. 19plus V2 responds:

this command will change the
scan length and/or initialize
logging. Repeat the command to
verify.

Type the command again and press
the Enter key to proceed.
The 19plus V2 responds:

Scan length has changed,
initializing logging

Moored mode setup commands following MM apply to Moored Mode
only, and have no effect on operation if the 19plus V2 is in Profiling mode.

MM Set 19plus V2 to Moored mode.

SampleInterval=x x= interval (seconds) between samples

(10 - 14,400 seconds).

Note:

For a 19plus V2 with optional Quartz
pressure sensor, NCycles= must be
an even number (2, 4, etc.); increasing
NCycles= reduces measurement
noise. See Specifications in Section 2:
Description of SBE 19plus V2 to
determine resolution.

NCycles=x x= number of measurements to take and

average every SampleInterval seconds.
Range 1 – 100; default 1. 19plus V2 takes
and averages NCycles samples (each

0.25 seconds apart) each SampleInterval
seconds; averaged data is stored in FLASH
memory and (if MooredTxRealTime=Y)
transmitted real-time.

Example: If SampleInterval=10 and NCycles=4, every 10 seconds 19plus V2 takes 4 measurements
(0.25 seconds apart), averages data from 4 measurements, and stores averaged data in FLASH memory.

59

Notes:

• Pump operation is affected by both

DelayBeforeSampling= and
MooredPumpMode=. See Pump

Operation – Moored Mode.

• The 19plus V2 does the integration
for the Quartz pressure sensor after
NCycles= measurements have
been taken.

• NCycles= and
DelayBeforeSampling= affect the

time required to sample. If these are
too high, the 19plus V2 is unable to
take the required number of
measurements and do the
calculations within SampleInterval=.
When it is beginning to log, the
19plus V2 checks all parameters,
and if necessary it internally
increases SampleInterval=.

MooredPumpMode=x x=0: No pump.

x=1: Run pump for 0.5 seconds before

each sample (typical for pumping through
conductivity cell only, with no auxiliary
sensors connected to plumbing).

x=2: Run pump during each sample
(typical for pumping through conductivity
cell and in-line auxiliary sensor).

DelayBeforeSampling=x x= time (seconds) to wait after switching

on external voltage sensors before
sampling (0-600 seconds). Default
0 seconds. Typical values if using:

- SBE 43 oxygen sensor – time is
dependent on membrane thickness and
on water temperature (see Pump
Operation – Moored Mode) . Use with
MooredPumpMode=2.

- Beckman- or YSI-type oxygen sensor –
120 to 180 seconds required to provide
time for sensor to polarize.
Use with MooredPumpMode=2.

- Sea Tech fluorometer - 15 seconds
required to provide time for sensor
to stabilize.

MooredTxRealTime=x x=Y: Output real-time data.

x=N: Do not.

52

60

Section 4: Deploying and Operating SBE 19plus V2

Logging Commands

Notes:

• In Seaterm232, to save real-time
data to a file, click the Capture menu
before beginning logging.

• If the FLASH memory is filled to
capacity, data sampling and
transmission of real-time data
continue, but excess data is not
saved in memory.

• If the 19plus V2 is sampling and the
voltage is less than the cut-off
voltage (see BatteryType= for cut­off values for various battery types),
the 19plus V2 halts logging and
displays WARNING: LOW BATTERY
VOLTAGE.

Logging commands direct the SBE 19plus V2 to sample data. When
commanded to start sampling, the 19plus V2 takes samples and stores the data
in its FLASH memory. Operation is dependent on the mode and setup.

Profiling Mode (MP)

While logging, the 19plus V2 transmits real-time data, and does not enter
quiescent (sleep) state between samples. The 19plus V2 provides several
methods for starting and stopping logging, depending on the settings for
IgnoreSwitch= and AutoRun=. Logging starts approximately 1 - 2 seconds
after it is commanded.

IgnoreSwitch= AutoRun=

N N

To Start Logging: To Stop Logging:

Slide magnetic
switch on.

Slide magnetic switch off, or
send Stop.

Send StartNow, or

Y

N

StartDateTime=

Send Stop.

and StartLater.

Note:

Sea-Bird ships the 19plus V2 with
AutoRun=N (it will not automatically
start sampling when external power is
applied). If you send AutoRun=Y:

• Send QS to put 19plus V2 n

quiescent (sleep) state, then turn
power off and then on again to start
sampling, or

Send StartNow to start sampling.

•

Y or N

Y

Turn on external
power.

The first time logging is started after receipt of the initialize logging command
(InitLogging), data recording starts at the beginning of memory and any
previously recorded data is written over. When logging is stopped, recording
stops. Each time logging is started again, recording continues, with new data

• Turn off external power, or

• (if you want to send

commands to check or
modify setup) Send Stop.

stored after the previously recorded data and a new header written to indicate
the incremented cast number, date, time, and sample numbers contained in the
cast. The maximum number of casts that can be taken is 1000.

Note:

For Moored mode, the magnetic switch
should be left off, but it has no effect
on logging. If the switch is turned on
while the 19plus V2 is in quiescent
state, the CPU enters the awake state,
but logging does not begin. If no
communications are established, the
19plus V2 times out and enters
quiescent state after 2 minutes.

Moored Mode (MM)

While logging, the 19plus V2 transmits real-time data if
MooredTxRealTime=Y. The 19plus V2 enters quiescent (sleep) state
between samples.

To start logging, use StartNow; logging starts SampleInterval= seconds after
receipt of StartNow. Alternatively, use StartDateTime= and StartLater to
start logging at a designated date and time. The first time logging is started
after receipt of the initialize logging command (InitLogging), data recording
starts at the beginning of memory and any previously recorded data is written
over. When Stop is sent, recording stops. Each time StartNow or StartLater
is sent again, recording continues, with new data stored after the previously
recorded data. A new header is written each time logging starts and every
2000 samples thereafter. A maximum of 1000 headers can be written; if the
maximum number of headers is reached but there is still room for samples in
FLASH memory, the 19plus V2 continues to sample and store sample data in
FLASH memory without writing additional headers.

53

Section 4: Deploying and Operating SBE 19plus V2

Logging Commands (continued)

Notes:

• If using StartNow or StartLater to
start logging, the 19plus V2 must be
set to Moored mode (MM), or if in
Profiling mode (MP) must be set to
ignore the magnetic switch
(IgnoreSwitch=Y).

• After receiving StartLater, the
19plus V2 displays waiting to
start at . . . in reply to
GetSD or DS. Once logging starts,
the DS reply displays logging.

• If the delayed start date and time
has already passed when StartLater
is received, the 19plus V2 executes
StartNow.

• If the delayed start date and time is
more than 90 days in the future
when StartLater is received, the
19plus V2 assumes that the user
made an error in setting the delayed
start date and time, and it executes
StartNow.

StartNow Start logging now.

StartDateTime=
mmddyyyyhhmmss Set delayed logging start month, day, year,

hour, minute, and second.

StartLater Start logging at time set with

StartDateTime=. If you need to change

19plus V2 setup after StartLater has been
sent (but before logging has started), send
Stop, change setup as desired, and then
send StartLater again.

Example: Program 19plus V2 to start logging on 20 January 2008
12:05:00. (user input in bold)

STARTDATETIME=01202008120500
STARTLATER

61

Notes:

• You may need to send Stop several
times to get the 19plus V2 to
respond.

• If in Profiling mode and
IgnoreSwitch=N, slide the magnetic
switch off or send Stop to stop
logging.

• You must stop logging before
uploading data.

Stop Stop logging or stop waiting to start

logging (if StartLater was sent
but logging has not begun yet).
Press Enter key before sending Stop.

54

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Section 4: Deploying and Operating SBE 19plus V2

Data Upload Commands

Stop logging before uploading data. If manually sending a data upload

Notes:

• Use the Upload menu to
upload data that will be
processed by SBE Data
Processing. Manually entering a

data upload command does not
produce data with the required
header information for processing
by our software. These
commands are included here for
reference for users who are
writing their own software.

• If not using the Upload menu ­To save data to a file, click the
Capture menu before entering a
data upload command.

• See Data Output Formats.

command, data is uploaded in the format defined by OutputFormat=.

GetSamples:b,e or DDb,e Upload data from sample b to sample e.

If b and e are omitted, all data is uploaded.
First sample number is 1.

Examples: Upload samples 1 to 1000 to a file (user input in bold):
(Click Capture menu and enter desired filename in dialog box.)

GETSAMPLES:1,1000

or

DD1,1000

GetCast:x or DCx Profiling mode only.

Upload data from cast x. If x is omitted,
data from cast 1 is uploaded.
First cast number is 1.

Example: Upload all data in second cast (cast 2) to a file (user input in bold):
(Click Capture menu and enter desired filename in dialog box.)

GETCAST:2

or

DC2

GetHeaders:b,e or DHb,e Upload header b to header e. If b and e are

omitted, all headers are uploaded. First
header number is 1. Header includes:

• cast/header number

• month, day, hour, minute, and second

when cast was started

• first and last sample in cast/header

• Profiling mode only - number of

measurements to average per sample
(NAvg=)

• Moored mode only - interval

between samples (SampleInterval=)

• reason logging was halted

(batfail = battery voltage too low;
mag switch = switch turned off;
stop cmd = received Stop command
or Home or Ctrl Z character;
timeout = error condition;
unknown = error condition;
?????? = error condition)

Examples:
Upload second header (header for cast 2) to a file (user input in bold):
(Click Capture menu and enter desired filename in dialog box.)

GETHEADERS:2,2

or

DH2,2

If in Profiling mode, 19plus V2 responds:

cast 2 30 Oct 2007 12:30:33 samples 35 to 87, avg = 1, stop = mag switch

If in Moored mode, 19plus V2 responds:

hdr 2 30 Oct 2007 12:30:33 samples 35 to 87, int = 10, stop = stop cmd

55

Section 4: Deploying and Operating SBE 19plus V2

Polled Sampling Commands

These commands request a single sample. The 19plus V2 always stores data

Notes:

• The 19plus V2 has a buffer that
stores the most recent data
samples. Unlike data in the
FLASH memory, data in the
buffer is erased upon removal or
failure of power.

• Pump operation for polled
sampling is defined by
MooredPumpMode=, even if
your 19plus V2 is set to Profiling
Mode (MP). Thus, the 19plus V2
ignores the minimum conductivity
frequency (MinCondFreq=) and
pump delay (PumpDelay=) for
polled sampling.

• Leave power on in SL, SLT, TS,
and TSSOn descriptions refers to
power for the 19plus V2 as well
as for the pump and any auxiliary
sensors. Power remains on until
QS is sent or the instrument
times out (after 2 minutes).

for the most recent sample in its buffer. Some polled sampling commands also
store data in FLASH memory - the 19plus V2 will not execute the store data
in FLASH memory portion of those commands while logging data.

SL Output last sample from buffer (obtained

with polled sampling, or latest sample
from logging), and leave power on.

SLT Output last sample from buffer, then take

new sample and store data in buffer.
Leave power on. Data is not stored in

FLASH memory.

TS Take new sample, store data in buffer,

output data, and leave power on. Data is
not stored in FLASH memory.

TSS Take new sample, store data in buffer

and FLASH memory, output data, and

turn power off.

TSSOn Take new sample, store data in buffer

and FLASH memory, output data, and

leave power on.

GetLastSamples:x Output last x samples from FLASH

memory. If x is greater than the number of
samples in memory, 19plus V2 outputs all
samples in memory. If x is omitted,
19plus V2 outputs just the last sample.

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Section 4: Deploying and Operating SBE 19plus V2

Testing Commands

Note:

Testing commands do not
automatically turn the pump on.
Thus, for instruments plumbed with
the pump, they report data from
essentially the same sample of
water for all 100 measurements,
because the pump does not run but
the pump and associated plumbing
prevent water from freely flowing
through the conductivity cell and
other plumbed sensors (for
example, dissolved oxygen sensor).
To get data from fresh samples,
send PumpOn before sending
a testing command, and then
send PumpOff when the test
is complete.

The 19plus V2 takes and outputs 100 samples for each test (except as noted);
data is not stored in FLASH memory. Press the Esc key (or send a break
character) to stop a test.

TC Measure conductivity, output converted data.

TCR Measure conductivity, output raw data.

TT Measure temperature, output converted data.

TTR Measure temperature, output raw data.

TP Measure pressure (strain-gauge or optional

Quartz), output converted data.

TPR Measure pressure (strain-gauge or optional

Quartz), output raw data.

TV Measure 6 external voltage channels,

output converted data.

TVR Measure voltages read by A/D converter,

output raw data.

Column Output

1 – 6 External voltages

7 Main battery voltage / 11

8

Back-up lithium battery voltage /

3.741

9 External current / 333.33

10 Pressure temperature voltage

TF Measure frequency (optional Quartz

pressure sensor), output converted
pressure data.

TFR Measure frequency (optional Quartz

pressure sensor), output raw data.

T38 Measure SBE 38 (secondary temperature),

output converted data.

PumpOn Turn pump on for testing purposes. Use

this command:

• Before sending testing command to

obtain pumped data from sensors
plumbed with the pump, or

• To test pump.

PumpOff Turn pump off for testing purposes.

57

Section 4: Deploying and Operating SBE 19plus V2

Calibration Coefficients Commands

Calibration coefficients are initially factory-set and should agree with

Notes:

• F = floating point number
S = string with no spaces

• If using an SBE 38 secondary
temperature sensor, its
calibration coefficients are not
stored in the 19plus V2
EEPROM. View and/or modify
the instrument’s calibration
coefficients by connecting the
instrument to the computer
directly and using SEATERM.

Note:

If using auxiliary A/D sensors (Volt0=
through Volt5=), their calibration
coefficients are not stored in the
19plus V2 EEPROM, but are stored in
the 19plus V2 configuration (.con) file.
View and/or modify the calibration
coefficients using the Configure menu
in SBE Data Processing or the
Configure Inputs menu in SEASAVE.

Calibration Certificates shipped with the 19plus V2.

Temperature

TCalDate=S S=calibration date
TA0=F F=A0
TA1=F F=A1
TA2=F F=A2
TA3=F F=A3
TOffset=F F=offset correction

Conductivity

CCalDate=S S=calibration date
CG=F F=G
CH=F F=H
CI=F F=I
CJ=F F=J
CPCor=F F=pcor
CTCor=F F=tcor
CSlope=F F=slope correction

Pressure - General

PCalDate=S S=calibration date
PRange=F F=sensor full scale range (psia)
POffset=F F=offset correction (decibars)

Strain-Gauge Pressure

PA0=F F=A0
PA1=F F=A1
PA2=F F=A2
PTempA0=F F=pressure temperature A0
PTempA1=F F=pressure temperature A1
PTempA2=F F=pressure temperature A2
PTCA0=F F=pressure temperature compensation ptca0
PTCA1=F F=pressure temperature compensation ptca1
PTCA2=F F=pressure temperature compensation ptca2
PTCB0=F F=pressure temperature compensation ptcb0
PTCB1=F F=pressure temperature compensation ptcb1
PTCB2=F F=pressure temperature compensation ptcb2

Optional Quartz Pressure

PC1=F F=C1
PC2=F F=C2
PC3=F F=C3
PD1=F F=D1
PD2=F F=D2
PT1=F F=T1
PT2=F F=T2
PT3=F F=T3
PT4=F F=T4
PSlope=F F=slope correction

External Frequency

ExtFreqSF=F F=external frequency scale factor (applies to

optional Quartz pressure sensor)

Voltage Channels

The following commands set voltage channel offsets and slopes at the factory. These
are properties of the 19plus V2’s electronics, and are not calibration coefficients for the
auxiliary sensors. These commands are included here for completeness, but should

never be used by the customer.
VOffset0= VSlope0=
VOffset1= VSlope1=
VOffset2= VSlope2=
VOffset3= VSlope3=
VOffset4= VSlope4=
VOffset5= VSlope5=

65

58

66

Section 4: Deploying and Operating SBE 19plus V2

Hardware Configuration Commands

The following commands are used to set manufacturing date, PCB serial
numbers, PCB assembly numbers, and auxiliary channel sensor types and
serial number, at the factory.

Factory Settings – do not modify in the field

SetMfgDate=
SetPcbSerialNum1=
SetPcbSerialNum2=
SetPcbSerialNum3=
SetPcbSerialNum4=
SetPcbAssembly1=
SetPcbAssembly2=
SetPcbAssembly3=
SetPcbAssembly4=

Auxiliary Sensor Settings – can be modified in the field to accommodate
changes in auxiliary sensors cabled to the 19plus V2

SetVoltType0=
SetVoltSN0=
SetVoltType1=
SetVoltSN1=
SetVoltType2=
SetVoltSN2=
SetVoltType3=
SetVoltSN3=
SetVoltType4=
SetVoltSN4=
SetVoltType5=
SetVoltSN5=

59

Section 4: Deploying and Operating SBE 19plus V2

Data Output Formats

The SBE 19plus V2 stores data in a compact machine code. Data is converted

Note:

Moored mode - For date and time
output, time is the time at the start of
the sample, after:

• a small amount of time
(1 to 2 seconds) for the 19plus V2 to
wake up and prepare to sample, and

• any programmed
DelayBeforeSampling=.

For example, if the 19plus V2 is
programmed to wake up and
sample at 12:00:00, and
DelayBeforeSampling=20, the output
time for the first sample will be
12:00:21 or 12:00:22.

and output in the user-selected format without affecting data in memory.
Because memory data remains intact until deliberately overwritten, you can
upload in one format, then choose another format and upload again.

Output format is dependent on OutputFormat= (0, 1, 2, 3, 4, or 5) and on the
command used to retrieve the data, as detailed below. The inclusion of some
data is dependent on the system configuration - if the system does not include
the specified sensor, the corresponding data is not included in the output data
stream, shortening the data string.

If in Moored mode and outputting real-time data (MooredTxRealTime=Y)
while logging, a # sign precedes the real-time output for each sample.

67

60

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Section 4: Deploying and Operating SBE 19plus V2

OutputFormat=0 (raw frequencies and voltages in Hex)

Data is output in the order listed, with no spaces or commas between
parameters. Shown with each parameter is the number of digits, and how to
calculate the parameter from the data (use the decimal equivalent of the hex

Notes:

• If you will be using SEASAVE to
acquire real-time data, you must set
OutputFormat=0.

• When using Seaterm232’s Upload
menu, Seaterm232 always uploads
data from memory in raw hex,
regardless of the user-programmed
format, providing the data in a format
that SBE Data Processing can use.

• Our software uses the equations
shown to perform these calculations;
alternatively, you can use the
equations to develop your own
processing software.

• The pressure sensor is an absolute
sensor, so its raw output includes
the effect of atmospheric pressure
(14.7 psi). As shown on the
Calibration Sheet, Sea-Bird’s
calibration (and resulting calibration
coefficients) is in terms of psia.
However, when outputting pressure
in engineering units, the 19plus V2
outputs pressure relative to the
ocean surface (i.e., at the surface
the output pressure is 0 decibars).
The 19plus V2 uses the following
equation to convert psia to decibars:
pressure (db) =
[pressure (psia) - 14.7] * 0.689476

• Although OutputFormat=0 outputs
raw data for temperature,
conductivity, etc., it outputs
engineering units for SBE 38 and
GTD data.

data in the equations).

1. Temperature

A/D counts = tttttt

2. Conductivity

conductivity frequency (Hz) = cccccc / 256

3. Strain-gauge pressure sensor Pressure (if PType=1)

A/D counts = pppppp

4. Strain-gauge pressure sensor temperature compensation (if PType=1)

pressure temperature compensation voltage = vvvv / 13,107

5. Quartz pressure sensor pressure (if PType=3)

pressure frequency (Hz) = pppppp / 256

6. Quartz pressure sensor temperature compensation (if PType=3)

temperature compensation voltage = vvvv / 13,107

7. External voltage 0 (if Volt0=Y)

external voltage 0= vvvv / 13,107

8. External voltage 1 (if Volt1=Y)

external voltage 1 = vvvv / 13,107

9. External voltage 2 (if Volt2=Y)

external voltage 2 = vvvv / 13,107

10. External voltage 3 (if Volt3=Y)

external voltage 3 = vvvv / 13,107

11. External voltage 4 (if Volt4=Y)

external voltage 4 = vvvv / 13,107

12. External voltage 5 (if Volt5=Y)

external voltage 5 = vvvv / 13,107

13. SBE 38 secondary temperature (if SBE38=Y)

SBE 38 temperature (°C, ITS-90) = (tttttt / 100,000) – 10

14. GTD #1 pressure (if GTD=Y or DualGTD=Y)

GTD #1 pressure (millibars) = pppppppp / 100,000

15. GTD #1 temperature (if GTD=Y or DualGTD=Y)

GTD #1 temperature (°C, ITS-90) = (tttttt / 100,000) – 10

16.

GTD #2 pressure (if DualGTD=Y)
GTD #2 pressure (millibars) = pppppppp / 100,000

17. GTD #2 temperature (if DualGTD=Y)

GTD #2 temperature (°C, ITS-90) = (tttttt / 100,000) - 10

18. Time (Moored mode [MM] only)

seconds since January 1, 2000 = ssssssss

Example: Profiling mode, strain-gauge pressure sensor, 2 external voltages sampled,
example scan = ttttttccccccppppppvvvvvvvvvvvv
= 0A53711BC7220C14C17D8203050594

• Temperature = tttttt = 0A5371 (676721 decimal);

temperature A/D counts = 676721

• Conductivity = cccccc = 1BC722 (1820450 decimal);

conductivity frequency = 1820450 / 256 = 7111.133 Hz

• Pressure = pppppp = 0C14C1 (791745 decimal);

pressure A/D counts = 791745

• Pressure sensor temperature compensation =

vvvv = 7D82 (32,130 decimal);
Pressure temperature = 32,130 / 13,107 = 2.4514 volts

• First external voltage = vvvv = 0305 (773 decimal);

voltage = 773 / 13,107 = 0.0590 volts

• Second external voltage = vvvv = 0594 (1428 decimal);

voltage = 1428 / 13,107 = 0.1089 volts

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Section 4: Deploying and Operating SBE 19plus V2

OutputFormat=1 (engineering units in Hex)

Data is output in the order listed, with no spaces or commas between the
parameters. Shown with each parameter is the number of digits, and how to
calculate the parameter from the data (use the decimal equivalent of the hex
data in the equations).

1. Temperature

temperature (°C, ITS-90) = (tttttt / 100,000) - 10

2. Conductivity

Conductivity (S/m) = (cccccc / 1,000,000) - 1

3. Pressure (strain-gauge or Quartz - PType=1 or 3)

pressure (decibars) = (pppppp / 1,000) - 100

4. External voltage 0 (if Volt0=Y)

external voltage 0= vvvv / 13,107

5. External voltage 1 (if Volt1=Y)

external voltage 1 = vvvv / 13,107

6. External voltage 2 (if Volt2=Y)

external voltage 2 = vvvv / 13,107

7. External voltage 3 (if Volt3=Y)

external voltage 3 = vvvv / 13,107

8. External voltage 4 (if Volt4=Y)

external voltage 4 = vvvv / 13,107

9. External voltage 5 (if Volt5=Y)

external voltage 5 = vvvv / 13,107

10. SBE 38 secondary temperature (if SBE38=Y)

SBE 38 temperature (°C, ITS-90) = (tttttt / 100,000) – 10

11. GTD #1 pressure (if GTD=Y or DualGTD=Y)

GTD #1 pressure (millibars) = pppppppp / 100,000

12. GTD #1 temperature (if GTD=Y or DualGTD=Y)

GTD #1 temperature (°C, ITS-90) = (tttttt / 100,000) – 10

13. GTD #2 pressure (if DualGTD=Y)

GTD #2 pressure (millibars) = pppppppp / 100,000

14. GTD #2 temperature (if DualGTD=Y)

GTD #2 temperature (°C, ITS-90) = (tttttt / 100,000) - 10

15.

Time (Moored mode [MM] only)

seconds since January 1, 2000 = ssssssss

69

Example: Profiling mode, 2 external voltages sampled,
example scan = ttttttccccccppppppvvvvvvvv
= 3385C40F42FE0186DE03050594

• Temperature = tttttt = 3385C4 (3376580 decimal);

temperature (°C, ITS-90) = (3376580 / 100,000) - 10 = 23.7658

• Conductivity = cccccc = 0F42FE (1000190 decimal);

conductivity (S/m) = (1000190 / 1,000,000) - 1 = 0.00019

• Pressure = pppppp = 0186DE (100062 decimal);

pressure (decibars) = (100062 / 1,000) - 100 = 0.062

• First external voltage = vvvv = 0305 (773 decimal);

voltage = 773 / 13,107 = 0.0590 volts

• Second external voltage = vvvv = 0594 (1428 decimal);

voltage = 1428 / 13,107 = 0.1089 volts

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Section 4: Deploying and Operating SBE 19plus V2

OutputFormat=2 (raw frequencies and voltages in decimal)

Data is output in the order listed, with a comma followed by a space between
each parameter. Shown with each parameter are the number of digits and the
placement of the decimal point. Leading zeros are suppressed, except for one
zero to the left of the decimal point.

1. Temperature

A/D counts = tttttt

2. Conductivity

conductivity frequency (Hz) = cccc.ccc

3. Strain-gauge pressure (if PType=1)

A/D counts = pppppp

4. Strain-gauge pressure sensor temperature compensation (if PType=1)

pressure temperature compensation voltage = v.vvvv

5. Quartz pressure sensor pressure (if PType=3)

Quartz pressure frequency (Hz) = ppppp.ppp

6. Quartz pressure sensor temperature compensation (if PType=3)

Quartz temperature compensation voltage = v.vvvv

7. External voltage 0 (if Volt0=Y)

external voltage 0= v.vvvv

8. External voltage 1 (if Volt1=Y)

external voltage 1 = v.vvvv

9. External voltage 2 (if Volt2=Y)

external voltage 2 = v.vvvv

10. External voltage 3 (if Volt3=Y)

external voltage 3 = v.vvvv

Note:
Although OutputFormat=2 outputs

raw data for temperature,
conductivity, etc., it outputs
engineering units for SBE 38 and
GTD data.

11. External voltage 4 (if Volt4=Y)

external voltage 4 = v.vvvv

12. External voltage 5 (if Volt5=Y)

external voltage 5 = v.vvvv

13. SBE 38 secondary temperature (if SBE38=Y)

SBE 38 temperature (°C, ITS-90) = ttt.tttt

14. GTD #1 pressure (if GTD=Y or DualGTD=Y)

GTD #1 pressure (millibars) = ppppppppp / 100,000

15. GTD #1 temperature (if GTD=Y or DualGTD=Y)

GTD #1 temperature (°

C, ITS-90) = tt.ttt

16. GTD #2 pressure (if DualGTD=Y)

GTD #2 pressure (millibars) = ppppppppp / 100,000

17. GTD #2 temperature (if DualGTD=Y)

GTD #2 temperature (°C, ITS-90) = tt.ttt

18. Time (Moored mode [MM] only)

date, time = dd Mmm yyyy, hh:mm:ss

(day month year hour:minute:second)

Example: Profiling mode, strain-gauge pressure sensor, 2 external voltages sampled,
example scan = tttttt, cccc.ccc, pppppp, v.vvvv, v.vvvv, v.vvvv
= 676721, 7111.133, 791745, 2.4514, 0.0590, 0.1089

• Temperature = tttttt = 676721;

temperature A/D counts = 676721

• Conductivity = cccc.ccc = 7111.133;

conductivity frequency = 7111.133 Hz

• Pressure = pppppp = 791745;

Pressure A/D counts = 791745

• Pressure sensor temperature compensation = v.vvvv = 2.4514;

Pressure temperature = 2.4514 volts

• First external voltage = v.vvvv = 0.0590;

voltage = 0.0590 volts

• Second external voltage = v.vvvv = 0.1089;

voltage = 0.1089 volts

63

Section 4: Deploying and Operating SBE 19plus V2

g

OutputFormat=3 (engineering units in decimal)

Data is output in the order listed, with a comma followed by a space between
each parameter. Shown with each parameter are the number of digits and the
placement of the decimal point. Leading zeros are suppressed, except for one
zero to the left of the decimal point.

Uploaded Data (from GetSamples:b,e, or DDb,e)

1. Temperature

temperature (°C, ITS-90) = ttt.tttt

2. Conductivity

Conductivity (S/m) = cc.ccccc

3. Pressure (strain-gauge or Quartz - PType=1 or 3)

pressure (decibars) = pppp.ppp

4. External voltage 0 (if Volt0=Y)

external voltage 0= v.vvvv

5. External voltage 1 (if Volt1=Y)

external voltage 1 = v.vvvv

6. External voltage 2 (if Volt2=Y)

external voltage 2 = v.vvvv

7. External voltage 3 (if Volt3=Y)

external voltage 3 = v.vvvv

8. External voltage 4 (if Volt4=Y)

external voltage 4 = v.vvvv

9. External voltage 5 (if Volt5=Y)

external voltage 5 = v.vvvv

10. SBE 38 secondary temperature (if SBE38=Y)

SBE 38 temperature (°C, ITS-90) = ttt.tttt

11. GTD #1 pressure (if GTD=Y or DualGTD=Y)

GTD #1 pressure (millibars) = ppppppppp / 100,000

12. GTD #1 temperature (if GTD=Y or DualGTD=Y)

GTD #1 temperature (°C, ITS-90) = tt.ttt

13. GTD #2 pressure (if DualGTD=Y)

GTD #2 pressure (millibars) = ppppppppp / 100,000

14. GTD #2 temperature (if DualGTD=Y)

GTD #2 temperature (°C, ITS-90) = tt.ttt

15. Salinity (if OutputSal=Y)

salinity (psu) = sss.ssss

16. Sound velocity (if OutputSV=Y)

sound velocity (meters/second) = vvvv.vvv

17. Time (Moored mode [MM] only)

date, time = dd Mmm yyyy, hh:mm:ss

(day month year hour:minute:second)

71

Example: Profiling mode, 2 external voltages sampled,
example scan = ttt.tttt, cc.ccccc, pppp.ppp, v.vvvv, v.vvvv = 23.7658, 0.00019, 0.062, 0.0590, 0.1089

• Temperature = ttt.tttt = 23.7658; temperature (°C, ITS-90) = 23.7658

• Conductivity = cc.ccccc = 0.00019; conductivity (S/m) = 0.00019

• Pressure = pppp.ppp = 0.062; pressure (decibars) = 0.062

• First external voltage = v.vvvv = 0.0590; voltage = 0.0590 volts

• Second external volta

e = v.vvvv = 0.1089; voltage = 0.1089 volts

Polled Data from SL, SLT, TS, TSS, or TSSOn:
If OutputUCSD=Y and the 19plus V2 is logging (autonomous sampling is in
progress), data is followed by density sigma-t in kg/m

3

(ddd.dddd), battery
voltage (vv.v), and operating current in mA (ccc.c), each separated by a
comma and a space. The rest of the data stream is as described above for
uploaded data.

64

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Section 4: Deploying and Operating SBE 19plus V2

OutputFormat=4 (pressure and scan number in Hex)

Note:
OutputFormat=4 is listed in the
GetCD and DS response as

converted HEX for AFM.

Data is output in the order listed, with no spaces or commas between
parameters. Shown with each parameter is the number of digits, and how to
calculate the parameter from the data (use the decimal equivalent of the hex
data in the equations).

The 19plus V2 is automatically set to OutputFormat=4 when
communicating with:

• Auto Fire Module (AFM) used with an SBE 32 Carousel Water

Sampler - This allows the AFM to use the 19plus V2 pressure data to

determine when to close SBE 32 Carousel water bottles.

• SBE 55 ECO Water Sampler - This allows the SBE 55 to use the

19plus V2 pressure data to determine when to close its water bottles if set
up for autonomous water sampling.

1. Pressure (strain-gauge or Quartz - PType=1 or 3)

pressure (decibars) = pppp - 100

2. Scan number = ssssss

Example: 19plus V2 used with AFM and Carousel,
example scan = ppppssssss
= 00C80001F0

• Pressure = pppp = 00C8 (200 decimal);

pressure (decibars) = 200 - 100 = 100 decibars

• Scan number = ssssss = 0001F0 (496 decimal);

scan number = 496

Note:
OutputFormat=5 is listed in the
GetCD and DS response as

converted XML UVIC.

OutputFormat=5 (engineering units in decimal, in XML)

Data is output in the order listed, with no carriage return or line feed between
each parameter (however, there is a carriage return and line feed at the end of
the data stream, after the </datapacket> closing tag). Shown with each
parameter is the number of digits and the placement of the decimal point.
Leading zeroes are suppressed, except for one zero to the left of the
decimal point.

65

Section 4: Deploying and Operating SBE 19plus V2

Uploaded Data (from GetSamples:b,e or DDb,e):

<?xml?>

Note:

For ease in reading, the data
structure is shown with each XML tag
on a separate line. However, there
are no carriage returns or line feeds
between tags (see example below).

<datapacket>
<hdr>
<mfg>Sea-Bird</mfg>
<model>19plus</model>
<sn>nnnnnnn</sn>
</hdr>
<data>
<t1>ttt.tttt</t1>
<c1>cc.ccccc</c1>
<p1>pppp.ppp </p1> (if PType=1 or 3)
<v0>v.vvvv</v0> (if Volt0=Y)
<v1>v.vvvv</v1> (if Volt1=Y)
<v2>v.vvvv</v2> (if Volt2=Y)
<v3>v.vvvv</v3> (if Volt3=Y)
<v4>v.vvvv</v4> (if Volt4=Y)
<v5>v.vvvv</v5> (if Volt5=Y)
<ser1>
<type>sbe38 or gtd</type> (indicates type of RS-232 sensor)
<t38>ttt.tttt</t38> (if SBE38=Y)
<p1>ppppppppp</p1> (if GTD=Y or DualGTD=Y)
<t1>tt.ttt</t1> (if GTD=Y or DualGTD=Y)
<p2>ppppppppp</p2> (if DualGTD=Y)
<t2>tt.ttt</t2> (if DualGTD=Y)
<ser1>
<sal>sss.ssss</sal> (if OutputSal=Y)
<sv>vvvv.vvv</sv> (if OutputSV=Y)
<dt>yyyy-mm-ddThh:mm:ss</dt> (if in Moored [MM] mode)
</data>
</datapacket>

where

Serial number = nnnnnnn
Temperature (°C, ITS-90) = ttt.tttt
Conductivity (S/m) = cc.ccccc
Pressure (decibars) = pppp.ppp
External voltage = v.vvvv (for voltage 0, 1, 2, 3, 4, and 5)
SBE 38 temperature (°C, ITS-90) = ttt.tttt
GTD pressure (millibars) = ppppppppp / 100,000 (for GTD #1 and #2)
GTD temperature (°C, ITS-90) = tt.ttt (for GTD #1 and #2)
Salinity (psu) = sss.ssss
Sound velocity (meters/second) = vvvv.vvv
Date, time = year month day T hour:minute:second

(yyyy-mm-ddThh:mm:ss)

73

Example: Profiling mode, with 2 external voltages sampled, example scan =

<?xml?><datapacket><hdr><mfg>Sea-Bird</mfg><model>19plus</model><sn>1906003</sn></hdr><data>
<t1>23.7658</t1><c1>0.00019</c1><p1>0.062</p1><v0>0.0590</v0><v1>0.1089</v1></data></datapacket>CRLF

This data indicates Serial number = 1906003, Temperature (°C, ITS-90) = 23.7658, Conductivity (S/m) = 0.00019,
Pressure (decibars) = 0.062, First external voltage = 0.0590 volts, Second external voltage = 0.1089 volts

Polled Data from SL, SLT, TS, TSS, or TSSOn:

If OutputUCSD=Y and the 19plus V2 is logging (autonomous sampling is in
progress) and in Moored mode, data is followed by:
<dens>ddd.dddd</dens><vb>vv.v</vb><i>ccc.c</i>

where

density sigma-t (kg/m

3

) = ddd.dddd
battery voltage = vv.v
operating current (mA) = ccc.c

The rest of the data stream is as described above for uploaded data.

66

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Section 4: Deploying and Operating SBE 19plus V2

Optimizing Data Quality for Profiling Applications

Our deployment recommendations are only general guidelines, and are
focused primarily on maximizing data quality. Actual sea state conditions, and
winch and deck gear configurations, may require some adaptation in order to
achieve best data quality and avoid mechanical problems.

The SBE 19plus V2 is optimized for profiling rates of 0.5 to 2 meters/second,
with 1 meter/second generally providing the best compromise between data
quality and profile resolution. The 19plus V2 pump maintains a constant and
optimum flow rate, which ensures that the sensor response times are not
dependent on the profiling rate. Adjust the profiling rate of the 19plus V2
based on the amount of ship motion (i.e., sea state) imparted to the cable, and
the size, weight, and drag of the underwater package at the end of the cable.
Generally, use a faster rate in rougher seas, allowing the 19plus V2 to stay
clear of turbulent wakes that are shed downward when the ship heaves up;
shed wakes are an error source from which all CTDs suffer. When the sea is
very calm, the 19plus V2 can be lowered more slowly (for example, 10 to 20
cm/second) to give greater vertical resolution.

Like for other CTDs, the common configurations of the 19plus V2 are
intended for obtaining downcast data, because the sensors are oriented so that
the T-C Duct inlet passes through relatively undisturbed water as the CTD is
lowered. As the CTD is raised (upcast), the sensors sample the turbulent wake
of the package, resulting in lower quality data. If planning to sample on the
upcast, consider the following:

• Vertical orientation – In the typical, sensors-down configuration, the

sensors are in the wake of the housing on the upcast, providing poor data
quality. If you must have good quality upcast data, invert the 19plus V2 so
that the T-C Duct is at the top (ignore the downcast data for this
configuration).

• Horizontal orientation (for example, under SBE 32 Carousel Water

Sampler) - Position other instruments, sample bottles, etc. so that they are
not directly above the T & C sensors and do not thermally contaminate the
water that flows to the sensors at the T-C Duct inlet.

When a 19plus V2 is installed on a water sampler, good conductivity and
optional dissolved oxygen data can be collected, even when stopped to collect
a water sample, because water continues to flow through the sensors at a fixed
and optimal rate.

Whether sampling on the upcast and/or downcast, position the T-C Duct
inlet so that other instruments, sample bottles, etc. do not thermally
contaminate the water that flows past the sensors.

Where the water temperature is very different from the temperature at which

Note:

See Pump Operation – Profiling
Mode for information on the minimum

soak time required to ensure proper
pump operation.

the 19plus V2 has been stored, better results are obtained if the 19plus V2 is
allowed to equilibrate to the water temperature at the surface (soak) for several
(3 – 5) minutes before beginning the profile. The reason is not that the
electronics are temperature sensitive - they are not - but that the thermal
influence of the instrument housing on the water entering the cell will be
reduced. If the difference between water and storage temperature is extreme,
allow more soak time.

67

Section 4: Deploying and Operating SBE 19plus V2

When very heavy seas cause severe ship motion, the 19plus V2 descent can
actually stop or reverse direction if the ship heaves upward faster than the
package can descend. These occurrences can often be seen as loops in the real­time temperature trace. If the winch payout rate is too high, a loop of wire can
form under water when the package descent is slowed or reversed by ship
heave and the winch is still paying out wire. Inevitably, the loop formation
gets out of phase with the heave and the loop closes on itself when the ship
heaves, causing a kink. If the package includes a Carousel Water Sampler as
well as the CTD, the package creates much more drag than with only the CTD,
further increasing the possibility that a loop will form in the cable. After
1000 to 2000 meters of cable are paid out, it can be difficult or impossible to
detect a loop in the cable. Adding 100 to 200 kg (maybe more by
experimentation) of lead weights to the Carousel frame will help overcome the
effect of drag, and allow the package to descend faster and stay more in line
directly below the overboarding sheave.

Spiking is sometimes seen in the derived values for salinity, density, or sound
velocity. Spiking results largely from a response time mismatch of the
conductivity and temperature sensors, especially when the profiling descent
rate is non-uniform. The greatest reduction in spiking is found by using
premium CTD equipment such as the SBE 9plus, which uses very fast sensors
(0.07 second) and high speed (24 Hz) parallel signal acquisition. The 19plus
V2 static accuracy is the same as that of the 9plus, but its dynamic responses
are not as ideal, as a result of its simpler, less costly, and more compact
design. Much of the spiking can be removed from the data set by aligning the
data in time. This alignment can be performed when post-processing the data
in SBE Data Processing.

Note:

See the SBE Data Processing
manual for information on data
processing modules that can correct
data for the influences of ship motion
and minimize salinity spiking.

The amount of spiking depends on the temperature gradient, and is much
worse when coupled surface motion causes the instrument to stop - or even
reverse - its descent. In the event of heavy ship motion, it may be worth letting
the instrument free-fall. When very heavy seas cause severe ship motion and
result in periodic reversals of the instrument descent, the data set can be
greatly improved by removing scans taken when the pressure is not increasing,
using SBE Data Processing.

75

68

76

Section 4: Deploying and Operating SBE 19plus V2

Installing Anti-Foul Fittings for Moored Applications

The SBE 19plus V2 is intended primarily for use as a profiling instrument, and
does not come standard with anti-foulant device cups and caps. Some
customers, finding that they use the 19plus V2 in Moored mode on occasion,
choose to install the optional moored mode conversion kit, which includes
anti-foulant device cups and caps.

Intake anti-foulant

device cup

Exhaust

Exhaust anti-foulant

device cup

Hole for thermistor

Conductivity cell guard

Intake

Remove screws, typical both sides

Exhaust anti-foulant

device cap (barbed) for

pumped applications

Intake anti-foulant device

cap for all applications

and exhaust cap for

non-pumped applications

Note: The larger diameter of the intake cap /
non-pumped application exhaust cap helps
maintain good flow through the conductivity
cell and reduces growth of biological
material. Do not use the barbed cap in
its place.

1. On pumped applications, remove the Tygon tubing from the

existing conductivity cell exhaust duct.

2. Remove the four Phillips-head screws attaching the conductivity cell

guard to the housing and end cap. Carefully remove the conductivity
cell guard.

3. Exhaust –
A. On the conductivity cell guard, remove the two small screws

attaching the exhaust duct to the guard.

B. Remove the existing exhaust duct and replace with the exhaust anti-

foulant device cup, reinstalling the two screws.

C. See Replacing Anti-Foulant Devices in Section 5: Routine

Maintenance and Calibration for details on handling and installing
the AF24173 Anti-Foulant Device.

D. Install the anti-foulant device cap to secure the Anti-Foulant Device

in the cup.

Exhaust anti-foulant device cup

69

Section 4: Deploying and Operating SBE 19plus V2

4. Intake –
A. Remove the two hex head screws attaching the existing intake duct to

the end cap.

B. Remove the existing intake duct, pulling it straight up to avoid

damaging the thermistor.

C. Check to ensure that the o-ring at the end of the conductivity cell is

still in place.

D. Place the intake anti-foulant device cup over the thermistor and

reinstall the hex head screws.

E. See Replacing Anti-Foulant Devices in Section 5: Routine

Maintenance and Calibration for details on handling and installing
the AF24173 Anti-Foulant Device.

F. Install the anti-foulant device cap to secure the Anti-Foulant Device

in the cup.

Conductivity cell

O-ring (typical both ends
of conductivity cell)

Intake anti-foulant
device cup

Thermistor

5. Check the exhaust end of the conductivity cell to ensure that the o-ring is
still in place.

6. Carefully reinstall the conductivity cell guard on the housing and end cap
using the four Phillips-head screws.

7. If not deploying immediately, install a protective plug:

Plug

In the intake cap, and
(for a non-pumped application) In the exhaust cap.

8. (for a pumped application) Reconnect the plumbing to the exhaust.
Note that the barbed exhaust cap has a smaller diameter than the standard
exhaust cap on the 19plus V2 (which does not accommodate Anti-Foulant
Devices). When reconnecting the plumbing, place a 13 mm (0.5 inch)
long piece of Tygon tubing, 9.5 mm ID x 13 mm OD
(0.375 inch x 0.5 inch), on the barbed cap. Then reinstall the existing
plumbing, 13 mm ID x 19 mm OD (0.5 inch x 0.75 inch OD) over
the Tygon.

77

70

78

Section 4: Deploying and Operating SBE 19plus V2

Setup for Deployment

1. Install new batteries or ensure the existing batteries have enough capacity
to cover the intended deployment (see Replacing/Recharging Batteries in
Section 5: Routine Maintenance and Calibration).

2. Program the 19plus V2 for the intended deployment using Seaterm232
(see Section 3: Power and Communications Test for connection
information; see this section for setup/configuration, sampling modes,
pump operation, and commands):

A. Set the date and time (DateTime=).

B. Ensure all data has been uploaded, and then send InitLogging to

make the entire memory available for recording. If InitLogging is not
sent, data will be stored after the last recorded sample.

C. Establish the setup and logging parameters.

If you will be using SEASAVE to acquire and view real-time
data, you must set OutputFormat=0 (raw hexadecimal).

D. Send GetCD or DS to verify the setup.

E. If desired, use StartDateTime= and StartLater to establish delayed

start date and time for Profiling mode (if IgnoreSwitch=Y) or
Moored mode.

Note:

When we ship a new instrument,
we include a .con file that reflects
the current instrument configuration
as we know it. The .con file is
named with the instrument serial
number, followed with the .con
extension. For example, for an
instrument with serial number 2375,
Sea-Bird names the .con file

2375.con. You may rename the
.con file if desired; this will not
affect the results.

3. If you will be using SEASAVE to acquire and view real-time data, verify
that the configuration (.con) file matches the instrument configuration.
Sea-Bird supplies a .con file to match the factory configuration and
calibrations. If the instrument is recalibrated or the configuration
is changed (such as by adding external sensors), the .con file must
be updated to reflect the current condition. See Verifying Contents of
.con File.

4. If you will be using Seaterm232 to view real-time data, click the Capture
menu to save the data to a file. Enter the desired capture file name in the
dialog box, and click Save.

71

Section 4: Deploying and Operating SBE 19plus V2

Deployment

1. Install a cable or dummy plug for each connector on the 19plus V2 sensor

CAUTION:
Do not use WD-40 or other

petroleum-based lubricants, as
they will damage the connectors.

end cap:
A. Lightly lubricate the inside of the dummy plug/cable connector with

silicone grease (DC-4 or equivalent).

B. Standard Connector - Install the plug/cable connector, aligning the

raised bump on the side of the plug/cable connector with the large pin
(pin 1 - ground) on the 19plus V2. Remove any trapped air by
burping or gently squeezing the plug/connector near the top and
moving your fingers toward the end cap. OR
MCBH Connector – Install the plug/cable connector, aligning
the pins.

C. Place the locking sleeve over the plug/cable connector. Tighten the

locking sleeve finger tight only. Do not overtighten the locking
sleeve and do not use a wrench or pliers.

79

Auxiliary

differential

input

sensors

(6 pin)

Auxiliary
differential
input
sensors
(6 pin)

RS-232
sensor
(4 pin)

Data I/O for real-time
data and pump
power (6 pin) –
connects to Y-cable

Locking
sleeve

Dummy
plug or
cable

2. Connect the other end of the cables installed in Step 1 to the
appropriate sensors.

3. Verify that the hardware and external fittings are secure.

4. If applicable, remove the Tygon tubing that was looped end-to-end around
the conductivity cell for storage. Reconnect the system plumbing
(see Configuration Options and Plumbing in Section 2: Description of
SBE 19plus V2).

5. Profiling mode - Immediately prior to deployment:

• (if IgnoreSwitch=N) Turn on the magnetic switch, or

• (if IgnoreSwitch=Y) If not already done, send StartNow, or send

StartDateTime= and StartLater, or

• (if AutoRun=Y) With the 19plus V2 in quiescent (sleep) state, apply

external power.

6. Moored mode - If not already done, send StartNow, or send
StartDateTime= and StartLater.

The SBE 19plus

V2 is ready to go into the water.

72

80

Section 4: Deploying and Operating SBE 19plus V2

Acquiring Real-Time Data with SEASAVE

Notes:

• When we ship a new instrument, we
include a .con file that reflects the
current instrument configuration as
we know it. The .con file is named
with the instrument serial number,
followed with the .con extension. For
example, for an instrument with
serial number 2375, we name the
.con file 2375.con. You may rename
the .con file if desired; this will not
affect the results.

• In the 19plus V2 setup commands,
external voltage numbers 0, 1, 2, 3,
4, and 5 correspond to wiring of
sensors to a voltage channel on the
end cap (see Dimensions and End

Cap Connectors in Section 2:
Description of SBE 19plus V2).

However, in the .con file, voltage 0 is
the first external voltage in the data
stream, voltage 1 is the second, etc.

• SEASAVE and SBE Data
Processing use the same .con file.

Verifying Contents of .con File

SEASAVE, our real-time data acquisition and display program, requires a .con
file, which defines the instrument – integrated auxiliary sensors, and channels,
serial numbers, and calibration dates and coefficients for all the sensors
(conductivity, temperature, and pressure as well as auxiliary sensors).
SEASAVE (as well as our data processing software) uses the information in
the .con file to interpret and process the raw data. If the .con file does not

match the actual instrument configuration, the software will not be able to
interpret and process data correctly.

1. Double click on Seasave.exe.

2. Click Configure Inputs. On the Instrument Configuration tab, click Open. In

the dialog box, select the .con file and click Open.

73

Section 4: Deploying and Operating SBE 19plus V2

3. The configuration information appears on the Instrument Configuration

tab. Verify that the sensors match those on your 19plus V2, and that
auxiliary sensors are assigned to the correct channels. Click Modify to
bring up a dialog box (shown below) to change the configuration and/or to
view / modify calibration coefficients.

81

Channel/Sensor table reflects this
choice (0, 1, 2, 3, 4, 5, or 6). Must
agree with 19plus V2 setup for
VoltN= (N= 0, 1, 2, 3, 4, and 5);
see reply from GetCD or DS.
Voltage channel 0 in .con file
corresponds to first external
voltage in data stream, voltage
channel 1 to second external
voltage in data stream, etc.

Interval between scans in Moored
mode. Used to calculate elapsed
time, if time is an output parameter.
Must agree with 19plus V2 setup
(SampleInterval=); see reply from
GetCD or DS.

• NMEA - Select if NMEA
navigation device used, and
select whether NMEA device is
connected directly to Deck Unit or
to computer. You can also append
NMEA depth data (3 bytes) and
NMEA time data (4 bytes) after
Lat/Lon data. SEASAVE adds
current latitude, longitude, and
universal time code to data
header; appends NMEA data to
every scan; and writes NMEA
data to .nav file every time Ctrl F7
is pressed or Add to .nav File is
clicked.
Notes:

1. NMEA time can only be
appended if NMEA device
connected to computer.

2. NMEA depth can only be
appended if NMEA device
connected to computer or if using
19plus V2 with PN 90488 or
90545 Interface Box.

• Surface PAR - Select if using with
deck unit connected to Surface
PAR sensor. SEASAVE appends
Surface PAR data to every scan.
Adds 2 channels to
Channel/Sensor table. Do not
increase External voltage

channels to reflect this; External
voltage channels reflects only

external voltages going directly to
19plus V2 from auxiliary sensor.
See Application Note 47.

• Scan time added - Select to
include time of each scan
(seconds since January 1, 1970
GMT) with data.

Strain gauge or Digiquartz with
temperature compensation.

Must agree with 19plus V2 setup (MP for Profiling mode,
MM for Moored mode); see reply from GetCD or DS.

SBE 38 (secondary temperature), or up to 2
GTDs (dissolved oxygen or nitrogen). Must
agree with 19plus V2 setup; see reply from
GetCD or DS. Channel/Sensor table lists
RS-232 sensors below voltage channels.

Number of samples to average (samples at 4 Hz) in
Profiling mode. Used to calculate elapsed time, if
time is output parameter. Must agree with 19plus V2
setup (NAvg=); see reply from GetCD or DS.

Shaded sensors
cannot be removed
or changed to
another type of
sensor. All others are
optional.

Click a (non-shaded) sensor and click Select to pick a
different sensor for that channel. Dialog box with list of
sensors appears. Select sensors after number of
voltage channels have been specified above.

New to create
new .con file for
this CTD.
Open to select
different .con
file.

Save or Save
As to save

current .con file
settings.

Click a sensor
and click Modify
to change
calibration
coefficients for
that sensor.

4. Click Save or Save As to save any changes to the .con file. Click Exit

when done reviewing / modifying the .con file.

74

plus

82

Section 4: Deploying and Operating SBE 19plus V2

Acquiring Real-Time Data

Instructions below are for an SBE 19plus V2 with a conventional single-core
armored cable, used without a Sea-Bird Deck Unit. If using the 19plus V2

with the SBE 33 or 36 Deck Unit or the SEACAT/SEALOGGER RS-232
and Navigation Interface Box, see the Deck Unit or Interface Box manual.

1. Wiring - Terminate the single-core armored cable with an RMG-4FS

connector (19plus V2 with standard connectors) or MCIL-4FS (19plus V2
with optional wet-pluggable connectors). Wire the cable armor to pin 1
(large pin for 19plus V2 with standard connectors) and the inner
conductor to pin 3 (opposite large pin) on the 19plus V2 data I/O - power
connector (4-pin leg on Y-cable connected to Data I/O, Pump, and
External Power bulkhead connector). On deck, wire:

Slip-ring lead 25-pin serial port 9-pin serial port

from armor Pin 7 Pin 5

from inner conductor Pin 3 Pin 2

Note:

The baud rate between the 19plus V2
and computer (defined in Configure
Inputs, on the Serial Ports tab) must
match the baud rate set in the
19

V2 with BaudRate=.

2. Double click on Seasave.exe.

3. Perform any desired setup in the Configure Inputs, Configure Outputs,

and Display menus..

4. In the Real-Time Data menu, select Start. The dialog box looks like this:

Data Archiving Options:

• Begin archiving data immediately to store raw (frequencies,
A/D counts, and/or voltages) real-time data as soon as Start
button is clicked and communication is established.

• Begin archiving data when ‘Start Archiving’ command is
sent to control when data begins to be written to file. This allows

you to eliminate scans associated with deploying CTD from ship
deck and soaking instrument near surface (alternatively, remove
these scans later in SBE Data Processing). If you make this
selection, when you click Start button and communication is
established, a dialog box with Start Archiving button appears.
Click this button when ready to begin saving scans to file, or
select Start Archiving in Real-Time Data menu.

• Do not archive data for this cast to not save data to a file.
Real-time data will still appear in displays.

Configuration Options: Currently selected instrument configuration
(.con) file is shown, containing information on number and type of
sensors interfacing with 19plus V2, calibration coefficients, and
inclusion of NMEA and/or Surface PAR data with output from CTD.
To select different .con file or modify input configuration (.con file,
serial ports, water sampler, TCP/IP ports, and/or miscellaneous), click
Configure Inputs. To modify outputs (serial data output, serial ports,
shared file output, mark variables, TCP/IP output, TCP/IP ports, SBE
14 remote display, PC alarms, header form, and/or diagnostics), click
Configure Outputs.

• Timeout in seconds at startup: Time allowed before first data
scan is received from 19plus V2. SEASAVE will time out and stop
attempting to acquire data if data is not received from 19plus V2
within this time period.

• Timeout in seconds between scans: Maximum gap allowed
between scans after first data scan is received from 19plus V2.
SEASAVE will time out and stop attempting to acquire data if data
is not received from 19plus V2 within this time period (for example,
if a shark bites cable and interrupts data acquisition, SEASAVE
stops attempting to acquire data after this gap).

Click Select Output Data File
Name. Save Archived Data As
dialog box appears; browse to
desired file location, enter desired
file name, and click Save.

75

Section 4: Deploying and Operating SBE 19plus V2

5. In the Start Real-Time Data Acquisition dialog box, click Start.

Notes:

• If in Moored mode, the 19plus V2

must be sampling autonomously to
use SEASAVE for real-time data
acquisition. Start sampling by
sending StartNow or StartLater in
Seaterm232 before starting
acquisition in SEASAVE.

• To prevent problems in the use of

the COM port, click Disconnect in
the Communications menu in
Seaterm232, and close Seaterm232
before starting real-time acquisition
in SEASAVE.

A. If you selected Begin archiving data immediately or Begin archiving

data when ‘Start Archiving’ command is sent above, and selected
Prompt for Header Information in the Header Form setup (Configure

Outputs), the Header Information dialog box appears. Fill in the
desired header and click OK.

B. If you selected Check Scan Length in the Options menu, SEASAVE

checks the .con file to verify that the scan length defined by the .con
file matches the 19plus V2 (i.e., number of sensors and inclusion of
NMEA is as defined in the .con file). If a Scan length error appears,
verify that:

• You are using the correct .con file.

• The .con file has been updated as necessary if you added or deleted

sensors, added or deleted NMEA or Surface PAR inputs, etc.

C. SEASAVE sends a message: Waiting for data. . . If you have already

started logging data, ignore the message; otherwise, slide the
magnetic switch to the On position or apply external power, as
applicable to your setup of the 19plus V2. SEASAVE times out if
data is not received within Timeout in seconds at startup.

D. Real-time data then starts appearing in the screen displays.

6. To stop real-time data acquisition: In the Real-Time Data menu,

select Stop.

7. Stop logging:

• If IgnoreSwitch=N and AutoRun=N: Put the magnetic switch in the

Off position.

• If IgnoreSwitch=Y and AutoRun=N: Close SEASAVE, then open

Seaterm232 and send Stop.

• If AutoRun=Y: Remove external power.

83

76

84

Section 4: Deploying and Operating SBE 19plus V2

Recovery

WARNING!

If the 19plus V2 stops working while
underwater, is unresponsive to
commands, or shows other signs of
flooding or damage, carefully
secure it away from people until you
have determined that abnormal
internal pressure does not exist or
has been relieved. Pressure housings

may flood under pressure due to dirty
or damaged o-rings, or other failed
seals. When a sealed pressure
housing floods at great depths and is
subsequently raised to the surface,
water may be trapped at the pressure
at which it entered the housing,
presenting a danger if the housing is
opened before relieving the internal
pressure. Instances of such flooding
are rare. However, a housing that
floods at 5000 meters depth holds an
internal pressure of more than
7000 psia, and has the potential to
eject the end cap with lethal force.
A housing that floods at 50 meters
holds an internal pressure of more
then 85 psia; this force could still
cause injury.
If you suspect the 19plus V2 is
flooded, point the 19plus V2 in a safe
direction away from people, and
loosen 1 end cap bulkhead connector
very slowly, at least 1 turn. This opens
an o-ring seal under the connector.
Look for signs of internal pressure
(hissing or water leak). If internal
pressure is detected, let it bleed off
slowly past the connector o-ring. Then,
you can safely remove the end cap.

Physical Handling

1. Rinse the instrument and conductivity cell with fresh water.

(See Section 5: Routine Maintenance and Calibration for cell cleaning
and storage.)

2. If the batteries are exhausted, new batteries must be installed before the

data can be extracted. Stored data will not be lost as a result of exhaustion
or removal of batteries. (See Section 5: Routine Maintenance and
Calibration for replacement of batteries.)

3. If immediate redeployment is not required, it is best to leave the

19plus V2 with batteries in place and in a quiescent state (QS). Because
the quiescent current required is only 20 microamps, the batteries can be
left in place without significant loss of capacity. If the 19plus V2 is to be
stored for a long time, replace the batteries yearly to prevent battery
leakage (which could damage the 19plus V2).

77

Section 4: Deploying and Operating SBE 19plus V2

Uploading Data

Note:

Data may be uploaded during
deployment or after recovery. If
uploading after recovery, connect the
I/O cable as described in Section 3:
Power and Communications Test.

Note:

You may need to send Stop several
times to get the 19plus V2 to respond.

1. Double click on SeatermV2.exe. The main screen appears.

2. In the Instruments menu, select SBE 19plus V2. Seaterm232 opens.

3. Seaterm232 will try to automatically connect to the 19plus V2. As it

connects, it sends GetHD and displays the response. Seaterm232 also fills
the Send Commands window with the correct list of commands for your
19plus V2. If there is no communication:
A. In the Communications menu, select Configure. The Serial Port

Configuration dialog box appears. Select the Comm port and baud
rate for communication, and click OK.

B. In the Communications menu, select Connect (if Connect is grayed

out, select Disconnect and reconnect).

C. If there is still no communication, check cabling between the

computer and 19plus V2.

D. If there is still no communication, repeat Step A with a different baud

rate and/or comm port, and try to connect again. Note that the
factory-set baud rate is documented on the Configuration Sheet.

4. Command the 19plus V2 to stop data logging by the method applicable to

your instrument’s setup:

• Pressing the Enter key, typing Stop, and pressing the Enter key again,

or

• Moving the magnetic switch to the Off position (only applicable in

Profiling mode, if IgnoreSwitch=N)

5. Display 19plus V2 status information by typing DS and pressing the Enter

key. The display looks like this (if in Profiling mode):

SeacatPlus V 2.1 SERIAL NO. 4000 20 Oct 2008 14:02:13
vbatt = 10.1, vlith = 8.9, ioper = 61.9 ma, ipump = 20.8 ma,
iext01 = 76.2 ma
status = not logging
number of scans to average = 1
samples = 5000, free = 4381542, casts = 1
mode = profile, minimum cond freq = 3000, pump delay = 60 sec
autorun = no, ignore magnetic switch = no
battery type = alkaline, battery cutoff = 7.5 volts
pressure sensor = strain gauge, range = 1000.0
SBE 38 = no, Gas Tension Device = no
Ext Volt 0 = yes, Ext Volt 1 = yes
Ext Volt 2 = no, Ext Volt 3 = no
Ext Volt 4 = no, Ext Volt 5 = no
echo characters = yes
output format = converted decimal
output salinity = no, output sound velocity = no

Verify that the status shows status = not logging.

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C:\

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Section 4: Deploying and Operating SBE 19plus V2

6. Click Upload to upload stored data. Seaterm232 responds as follows:
A. Seaterm232 sends GetSD and displays the response. GetSD provides

Note:

If binary upload is selected,
Seaterm232 uploads the data in binary
and then converts it to ASCII text,
resulting in a data file that is identical
to one uploaded in ASCII text.

information on the instrument status, and number of samples in
memory.

B. Seaterm232 sends DH and displays the response. DH provides

information on the headers in memory.

C. An Upload Data dialog box appears:

Select number of bytes uploaded in each block.
Seaterm232 uploads data in blocks, and
calculates a checksum at end of each block. If
block fails checksum verification, Seaterm232
tries to upload block of data again, cutting block
size in half.

Defines data upload type and range:

• All data as a single file – All data is uploaded
into 1 file.

• All data separated by cast (Profiling mode only)

- All data uploaded. Separate file is written
for each cast, with 3-digit cast identification
number (001 to 301) appended to user-selected
file name.

• By cast number range (Profiling mode only) –
Enter beginning cast number and total number
of casts. Separate file is written for each cast,
with 3-digit cast identification number (001 to

301) appended to user-selected file name.

• By scan number range – Enter beginning scan
(sample) number and total number of scans. All
data within range is uploaded into 1 file.

• By address range – Enter beginning byte
number and total number of bytes. Note that first
byte in memory is byte 0. All data within range is
uploaded into 1 file.

• From a single cast (Profiling mode only) – Enter
cast number. All data from that cast is uploaded
into 1 file.

Select to enable ASCII text or
binary upload. Binary is
approximately twice as fast.

Bytes 21334368
Samples 1939488
SamplesFree 4042161
SampleLength 11
Profiles 22

Click Browse to navigate to desired upload file
path and name. Upload file has a .xml extension.
After Seaterm232 uploads data into .xml file(s), it
automatically converts .xml file(s) to .hex file(s)
(same file name, different extension), which is
compatible with SEASAVE and SBE Data
Processin

.

ploadTest.xml

Make the desired selections.

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Section 4: Deploying and Operating SBE 19plus V2

7. Click the Header Form tab to customize the header:

Defines header information
included with uploaded data:

• Prompt for header information –
Each time data is uploaded,
user is prompted to fill out user­defined header form.

• Include default header form in
upload file – User-defined
default header form included in
upload file. User is not
prompted to add any
information when data is
uploaded.

• Don’t include default header
form in upload file – Header
information not included in
upload file.

87

Note:

The commands and responses
automatically sent by Seaterm232
during the upload do not appear in the
Command/Data Echo Area.

The entries are free form, 0 to 12 lines long. This dialog box establishes:

• the header prompts that appear for the user to fill in when uploading

data, if Prompt for header information was selected

• the header included with the uploaded data, if Include default header

form in upload file was selected

Enter the desired header/header prompts.

8. Click Start; the Status bar at the bottom of the window displays the

upload progress:
A. Seaterm232 sends GetHD (get hardware data), GetSD (get status

data), GetCD (get configuration data), GetCC (get calibration
coefficients), and GetEC (get event counter), and writes the
responses to the upload file. These commands provide information
regarding the number of samples in memory, mode, header/cast
numbers, calibration coefficients, etc.

B. If you selected Prompt for header information in the Upload Data

dialog box – a dialog box with the header form appears. Enter the
desired header information, and click OK. Seaterm232 writes the
header information to the upload file.

C. Seaterm232 sends the data upload command, based on your selection

of upload range in the Upload Data dialog box, writes the data to the
upload .xml file, and then creates the .hex file from the .xml file. The
.hex file contains the data in raw hexadecimal, for compatibility with
SEASAVE and SBE Data Processing.

D. If you selected All data separated by cast or By cast number range

in the Upload Data dialog box – Seaterm232 repeats Steps B and C
for each cast.

E. When the data has been uploaded, Seaterm232 shows the S> prompt

(if OutputExecutedTag=N).

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Section 4: Deploying and Operating SBE 19plus V2

9. Ensure all data has been uploaded by reviewing and processing the data:

Notes:
To prepare for redeployment:

1. After all data has been uploaded,
send InitLogging. If this command
is not sent, new data will be stored
after the last recorded sample,
preventing use of the entire
memory capacity.

2. Send QS to put the 19plus V2 in
quiescent (sleep) state until ready
to redeploy. Quiescent current
is only 20 microamps, so the
batteries can be left in place
without significant loss of capacity.

A. Use SEASAVE to display and plot the raw hexadecimal data in

engineering units (see Verifying Contents of .con File and
SEASAVE’s manual/Help files).

B. Use SBE Data Processing to process and plot the data (see

Processing Data Using SBE Data Processing and SBE Data
Processing manual/Help files).

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Section 4: Deploying and Operating SBE 19plus V2

Processing Data Using SBE Data Processing

Notes:

• See the SBE Data Processing
manual and/or Help files.

• When we ship a new instrument, we
include a .con file that reflects the
current instrument configuration as
we know it. The .con file is named
with the instrument serial number,
followed with the .con extension. For
example, for an instrument with
serial number 2375, Sea-Bird names
the .con file 2375.con. You may
rename the .con file if desired; this
will not affect the results.

• In the 19plus V2 setup commands,
external voltage numbers 0, 1, 2, 3,
4, and 5 correspond to wiring of
sensors to a voltage channel on the
end cap (see Dimensions and End

Cap Connectors in Section 2:
Description of SBE 19plus V2).

However, in the .con file, voltage 0 is
the first external voltage in the data
stream, voltage 1 is the second, etc.

• SEASAVE and SBE Data
Processing use the same .con file.

1. Convert the .hex (raw data) file (real-time file from SEASAVE or

uploaded from 19plus V2 memory) to a .cnv (engineering units) file in
SBE Data Processing’s Data Conversion module.

2. Once the data is converted: perform further processing (align, filter,

remove bad data, etc.), calculate derived variables, and plot data using
SBE Data Processing’s other modules.

Verifying Contents of Configuration (.con) File

To convert the .hex (raw data) file, you need a .con file, which defines the
instrument – integrated sensors, and channels, serial numbers, and calibration
dates and coefficients for all sensors (C, T, and P as well as auxiliary sensors).
SBE Data Processing (as well as our real-time data acquisition software) uses
the .con file information to interpret and process the raw data. If the .con file

does not match the actual instrument configuration, the software will be
unable to interpret and process the data correctly.

To view or modify the .con file:

1. Double click on SBEDataProc.exe.

2. In the Configure menu, select SBE 19plus V2 Seacat CTD. The

configuration dialog box appears; click Open.

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Section 4: Deploying and Operating SBE 19plus V2

3. In the Open dialog box, select the appropriate .con file and click Open.

Verify that the sensors match those on your 19plus V2, auxiliary sensors are
assigned to the correct voltage channels, and calibration coefficients for all
sensors are up-to-date.

Channel/Sensor table reflects this
choice (0, 1, 2, 3, 4, 5, or 6). Must
agree with 19plus V2 setup for
VoltN= (N= 0, 1, 2, 3, 4, and 5);
see reply from GetCD or DS.
Voltage channel 0 in .con file
corresponds to first external
voltage in data stream, voltage
channel 1 to second external
voltage in data stream, etc.

Interval between scans in Moored
mode. Used to calculate elapsed
time, if time is an output parameter.
Must agree with 19plus V2 setup
(SampleInterval=); see reply from
GetCD or DS.

• NMEA - Select if NMEA
navigation device used, and if
NMEA depth data and NMEA time
data were also appended.
SEASAVE adds current latitude,
longitude, and universal time code
to data header; appends NMEA
data to every scan; and writes
NMEA data to .nav file every time
Ctrl F7 is pressed or Add to .nav
File is clicked.
Note: Whether NMEA device was
connected to a deck unit or
directly to computer during data
acquisition in SEASAVE has no
effect on data file used by SBE
Data Processing, and therefore
has no effect on data processing.

• Surface PAR - Select if using with
deck unit connected to Surface
PAR sensor. SEASAVE appends
Surface PAR data to every scan.
Adds 2 channels to
Channel/Sensor table. Do not
increase External voltage

channels to reflect this; External
voltage channels reflects only

external voltages going directly to
19plus V2 from auxiliary sensor.
See Application Note 47.

• Scan time added - Select to
include time of each scan
(seconds since January 1, 1970
GMT) with data.

Strain gauge or Digiquartz with
temperature compensation.

Must agree with 19plus V2 setup (MP for Profiling mode,
MM for Moored mode); see reply from GetCD or DS.

SBE 38 (secondary temperature), or up to 2
GTDs (dissolved oxygen or nitrogen). Must
agree with 19plus V2 setup; see reply from
GetCD or DS. Channel/Sensor table lists
RS-232 sensors below voltage channels.

Number of samples to average (samples at 4 Hz) in
Profiling mode. Used to calculate elapsed time, if
time is output parameter. Must agree with 19plus V2
setup (NAvg=); see reply from GetCD or DS.

Shaded sensors
cannot be removed
or changed to
another type of
sensor. All others are
optional.

Click a (non-shaded) sensor and click Select to pick a
different sensor for that channel. Dialog box with list of
sensors appears. Select sensors after number of
voltage channels have been specified above.

New to create
new .con file for
this CTD.
Open to select
different .con
file.

Save or Save
As to save

current .con file
settings.

Click a sensor
and click Modify
to change
calibration
coefficients for
that sensor.

4. Click Save or Save As to save any changes to the .con file. Click Exit when

done reviewing / modifying the .con file.

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Section 4: Deploying and Operating SBE 19plus V2

Editing Raw Data File

Sometimes users want to edit the raw .hex data file before beginning
processing, to remove data at the beginning of the file corresponding to
instrument soak time, to remove blocks of bad data, to edit the header, or to add
explanatory notes about the cast. Editing the raw .hex file can corrupt the

data, making it impossible to perform further processing using Sea-Bird
software. Sea-Bird strongly recommends that you first convert the data to a

.cnv file (using the Data Conversion module in SBE Data Processing), and then
use other SBE Data Processing modules to edit the .cnv file as desired.

The procedure for editing a .hex data file described below has been found to

Note:

Although we provide this
technique for editing a raw .hex
file, Sea-Bird’s strong

recommendation, as described
above, is to always convert the
raw data file and then edit the
converted file.

work correctly on computers running Windows 98, 2000, and NT. If the
editing is not performed using this technique, SBE Data Processing may
reject the edited data file and give you an error message.

1. Make a back-up copy of your .hex data file before you begin.

2. Run WordPad.

3. In the File menu, select Open. The Open dialog box appears. For Files of

type, select All Documents (*.*). Browse to the desired .hex data file and
click Open.

4. Edit the file as desired, inserting any new header lines after the System

Upload Time line. Note that all header lines must begin with an asterisk
(*), and *END* indicates the end of the header. An example is shown
below (for an SBE 21), with the added lines in bold:

* Sea-Bird SBE 21 Data File:
* FileName = C:\Odis\SAT2-ODIS\oct14-19\oc15_99.hex
* Software Version Seasave Win32 v1.10
* Temperature SN = 2366
* Conductivity SN = 2366
* System UpLoad Time = Oct 15 1999 10:57:19

* Testing adding header lines
* Must start with an asterisk
* Place anywhere between System Upload Time & END of header

* NMEA Latitude = 30 59.70 N
* NMEA Longitude = 081 37.93 W
* NMEA UTC (Time) = Oct 15 1999 10:57:19
* Store Lat/Lon Data = Append to Every Scan and Append to .NAV
File When <Ctrl F7> is Pressed
** Ship: Sea-Bird
** Cruise: Sea-Bird Header Test
** Station:
** Latitude:
** Longitude:
*END*

5. In the File menu, select Save (not Save As). If you are running

Windows 2000, the following message displays:

You are about to save the document in a Text-Only
format, which will remove all formatting. Are you sure
you want to do this?

Ignore the message and click Yes.

6. In the File menu, select Exit.

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92

Section 5: Routine Maintenance and Calibration

Section 5: Routine Maintenance and Calibration

This section reviews corrosion precautions, connector mating and
maintenance, plumbing maintenance, replacement/recharging batteries,
conductivity cell storage and cleaning, pressure sensor maintenance,
replacement of optional Anti-Foulant Devices, and sensor calibration. The
accuracy of the SBE 19plus V2 is sustained by the care and calibration of the
sensors and by establishing proper handling practices.

Corrosion Precautions

Rinse the SBE 19plus V2 with fresh water after use and prior to storage.

For both the plastic and titanium housing, all exposed metal is titanium
(the plastic housing has a titanium end cap). No corrosion precautions are
required, but avoid direct electrical connection of the titanium to dissimilar
metal hardware.

Connector Mating and Maintenance

Note:

See Application Note 57: Connector
Care and Cable Installation.

CAUTION:
Do not use WD-40 or other

petroleum-based lubricants, as they
will damage the connectors.

Clean and inspect connectors, cables, and dummy plugs before every cruise,
during a cruise (good practice if you have a few days of down time between
casts), after every cruise, and as part of your yearly equipment maintenance.
Inspect connectors that are unmated for signs of corrosion product around the
pins, and for cuts, nicks or other flaws that may compromise the seal.

When remating:

1. Lightly lubricate the inside of the dummy plug/cable connector with

silicone grease (DC-4 or equivalent).

2. Standard Connector - Install the plug/cable connector, aligning the

raised bump on the side of the plug/cable connector with the large pin
(pin 1 - ground) on the 19plus V2. Remove any trapped air by burping or
gently squeezing the plug/connector near the top and moving your fingers
toward the end cap. OR
MCBH Connector – Install the plug/cable connector, aligning the pins.

3. Place the locking sleeve over the plug/cable connector. Tighten the

locking sleeve finger tight only. Do not overtighten the locking sleeve
and do not use a wrench or pliers.

Verify that a cable or dummy plug is installed for each connector on the
system before deployment.

85

Section 5: Routine Maintenance and Calibration

Plumbing Maintenance

For an SBE 19plus V2 with plumbing configured for vertical orientation -

Y-fitting with
air release
(bleed) valve

Air release valve detail

0.5 mm (0.02 in.)

A clogged air release valve can trap air, preventing the pump from
functioning properly; this will affect the data quality. Periodically clean the

air release valve:

1. Use a 0.4 mm (0.016 inches) diameter wire (you can use #26 AWG wire)

to clean the valve. The easiest way to do this is to remove the Tygon
tubing above the air release valve, and use needle-nosed pliers to force the
wire through the hole.

2. Blow through the air release valve to ensure it is open.

3. (if applicable) Replace the Tygon tubing above the air release valve.

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Section 5: Routine Maintenance and Calibration

Replacing / Recharging Batteries

Note:

If changing from alkaline to Ni-Cad
or NiMH batteries, or vice versa,
send BatteryType= to indicate the
new battery type.

Alkaline D-cell
(MN1300, LR20)

Unthread cap by rotating
counter-clockwise

Remove Phillips-head
screws and washers

Leave the batteries in place when storing the SBE 19plus V2 to prevent
depletion of the back-up lithium batteries by the real-time clock. Even
exhausted main batteries will power the clock (20 microamperes) almost
indefinitely. If the 19plus V2 is to be stored for long periods, replace the
batteries yearly to prevent battery leakage (which could damage the
19plus V2).

Replacing Alkaline Batteries

The 19plus V2 uses alkaline D-cells (Duracell MN1300, LR20), dropped into
the battery compartment.

1. Remove the battery end cap (end cap without connectors):
A. Wipe the outside of the end cap and housing dry, being careful to

remove any water at the seam between them.

B. Unthread the end cap by rotating counter-clockwise (use a wrench on

the white plastic bar if necessary).

C. Remove any water from the O-ring mating surfaces inside the

housing with a lint-free cloth or tissue.

D. Put the end cap aside, being careful to protect the O-ring from

damage or contamination.

2. Remove the battery cover plate from the housing:
A. Remove the three Phillips-head screws and washers from the battery

cover plate inside the housing.

B. The battery cover plate will pop out. Put it aside.

3. Turn the 19plus V2 over and remove the batteries.

4. Install the new batteries, with the + terminals against the flat battery
contacts and the - terminals against the spring contacts.

5. Reinstall the battery cover plate in the housing:
A. Align the battery cover plate with the housing. The posts inside the

housing are not placed symmetrically, so the cover plate fits into the
housing only one way. Looking at the cover plate, note that one screw
hole is closer to the edge than the others, corresponding to the post
that is closest to the housing.

B. Reinstall the three Phillips-head screws and washers, while pushing

hard on the battery cover plate to depress the spring contacts at the
bottom of the battery compartment. The screws must be fully
tightened, or battery power to the circuitry will be intermittent.

6. Check the battery voltage at BAT + and BAT - on the battery cover plate.
It should be approximately 13.5 volts.

7. Reinstall the battery end cap:
A. Remove any water from the O-rings and mating surfaces with a lint-

free cloth or tissue. Inspect the O-rings and mating surfaces for dirt,
nicks, and cuts. Clean or replace as necessary. Apply a light coat
of o-ring lubricant (Parker Super O Lube) to O-rings and
mating surfaces.

B. Carefully fit the end cap into the housing and rethread the end cap

into place. Use a wrench on the white plastic bar to ensure the
end cap is tightly secured.

Verify that the magnetic switch on the conductivity cell guard is in the Off
position, so the 19plus V2 will be in quiescent (sleep) state.

87

Section 5: Routine Maintenance and Calibration

Recharging Optional Nickel Metal Hydride Batteries

See the NiMH Battery Charger and Battery Pack manual for complete
details on charging, error messages, battery specifications, etc.

1. Remove the battery end cap (end cap without connectors):
A. Wipe the outside of the end cap and housing dry, being careful to

remove any water at the seam between them.

Unthread cap
by rotating
counter­clockwise

Screw

9-cell

Battery pack

Battery pack –
12-cell shown,

9-cell (used with

19plus V2) is similar

Battery
charger

Power
switch

WARNING!
Do not disconnect the battery while the
Charger Active lamp is on. Doing so
may cause a small spark.

Charger
cable

B. Unthread the end cap by rotating counter-clockwise (use a wrench on

the white plastic bar if necessary).

C. Remove any water from the O-ring mating surfaces inside the

housing with a lint-free cloth or tissue.

D. Put the end cap aside, being careful to protect the O-ring from

damage or contamination.

Note:
If desired, you can recharge the NiMH battery pack while it is in
the housing. Skip Steps 2 and 4 if recharging in the housing.

2. Remove the battery pack from the housing:
A. The protective plastic plate over the battery cover plate prevents you

from completely removing the cap screws that connect the battery
pack to the 19plus V2 battery posts in one step. Each of the screws is
12 mm (1/2 inch) long, but the clearance between the cover plate and
plastic plate is only 6 mm (1/4 inch). Unscrew each of the three cap
screws just until they hit the bottom of the protective plastic plate.
The battery pack will walk out of the housing approximately 6 mm
(1/4 inch) because of the spring contacts at the bottom of the battery
compartment. Unscrew the cap screws again. The battery pack
will walk out of the housing again, and should now be disconnected
from the battery posts.

B. Pull on the cord to remove the battery pack from the housing.

3. Recharge the batteries:
A. Plug the battery charger into a suitable power source and turn on

power to the charger.

B. Connect the charger cable to the battery pack and charger.

The LED should show READY, and display the battery type and
measured voltage.

C. Press the Discharge button. The LED should show DISCHARGE.

This starts the discharge cycle, which discharges any remaining
battery capacity. Repeatedly charging without discharging may
damage the battery pack. The Discharge cycle takes approximately
110 minutes. When discharging is complete, the LED should
show EMPTY.

D. Press the Charge button. The LED should show Fast Charge

(it may also show WARM-UP CHARGE, REFILL CHARGE, and/or
TOP OFF during the charge cycle). The Charge cycle takes
approximately 2 hours. When charging is complete, the LED should
show BATTERY FULL.

E. Turn off power to the charger.
F. Disconnect the battery pack from the charger and the charger from

the power source.

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Section 5: Routine Maintenance and Calibration

4. Reinstall the battery pack in the housing:
A. Align the battery pack with the housing. The posts inside the housing

Note:

The NiMH battery pack fits tightly in
the housing. When placing a battery
pack in the housing, align it carefully
and slowly insert it straight into the
housing. If not careful, the battery pack
shrink wrap can be torn.

are not placed symmetrically, so the battery pack fits into the housing
only one way. Looking at the bottom of the battery pack, note that
one tube is closer to the edge than the others, corresponding to the
post that is closest to the housing.

B. Reinstall the three cap screws until they are snug against the top plate.

While pushing hard on the protective plastic plate to depress the
spring contacts at the bottom of the compartment, continue to tighten
the cap screws. Repeat until all three cap screws are tightened and the
battery pack cannot be pushed further into the housing. The screws

must be fully tightened, or battery power to the circuitry will
be intermittent.

5. Reinstall the battery end cap:
A. Remove any water from the O-rings and mating surfaces with a lint-

free cloth or tissue. Inspect the O-rings and mating surfaces for dirt,
nicks, and cuts. Clean or replace as necessary. Apply a light coat
of O-ring lubricant (Parker Super O Lube) to O-rings and
mating surfaces.

B. Carefully fit the end cap into the housing and rethread the end cap

into place. Use a wrench on the white plastic bar to ensure the
end cap is tightly secured.

Verify that the magnetic switch is Off, so the SBE 19plus V2 will be in
quiescent (sleep) state.

89

Section 5: Routine Maintenance and Calibration

Recharging Optional Nickel-Cadmium Batteries

1. Remove the battery end cap (end cap without connectors):

Unthread cap
by rotating
counter­clockwise

Screw

(typical)

Tab on
cord

CAUTION:
Do not recharge the Ni-Cad
battery pack while it is in the
housing. If you do so, you may

damage the 19plus V2 electronics.

Pin jacks

A. Wipe the outside of the end cap and housing dry, being careful to

remove any water at the seam between them.

B. Unthread the end cap by rotating counter-clockwise (use a wrench on

the white plastic bar if necessary).

C. Remove any water from the O-ring mating surfaces inside the

housing with a lint-free cloth or tissue.

D. Put the end cap aside, being careful to protect the O-ring from

damage or contamination.

2. Remove the battery pack from the housing:
A. Remove the three Phillips-head machine screws and washers from the

battery cover plate inside the housing.

B. Pull on the plastic tab on the center cord to remove the battery pack

from the housing.

3. Recharge the batteries:
A. Connect the battery charger leads to the battery cover pin jacks,

matching black-to-black and red-to-red (the pin jacks are different
sizes to prevent cross-wiring).

B. Plug the battery charger into a suitable AC mains power source.
C. The red Charge LED on the charger comes on. Recharging takes

approximately 15 hours. When recharging is complete, the yellow
Trickle LED comes on, indicating the charger is providing a
maintenance level charge.

D. Disconnect the battery pack from the charger and the charger from

the power source.

E. Check the voltage at BAT + and BAT – on the battery cover.

It should be approximately 10.8 volts.

4. Reinstall the battery pack in the housing:
A. Align the battery pack with the housing. The posts inside the housing

are not placed symmetrically, so the battery pack fits into the housing
only one way. Looking at the battery bottom cover, note that one
circular cutout is closer to the edge than the others, corresponding to
the post that is closest to the housing.

B. Reinstall the three Phillips-head screws and washers, while pushing

hard on the top of the battery pack to depress the spring contacts at
the bottom of the compartment. The screws must be fully tightened,
or the battery power to the circuitry will be intermittent.

5. Reinstall the battery end cap:
A. Remove any water from the O-rings and mating surfaces with a lint-

free cloth or tissue. Inspect the O-rings and mating surfaces for dirt,
nicks, and cuts. Clean or replace as necessary. Apply a light coat
of O-ring lubricant (Parker Super O Lube) to O-rings and
mating surfaces.

B. Carefully fit the end cap into the housing and rethread the end cap

into place. Use a wrench on the white plastic bar to ensure the
end cap is tightly secured.

Verify that the magnetic switch on the conductivity cell guard is in the Off
position, so the 19plus V2 will be in quiescent (sleep) state.

97

90