Xylem handylab OX 12 User Manual
Operating manual
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handylab Ox 12
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Oxygen Meter
handylab LF 12
Accuracy when
going to press
Warranty We guarantee the instrument described for 3 years from the date of
The use of advanced technology and the high quality standard of our
instruments are the result of continuous development. This may result
in differences between this operating manual and your instrument. Also, we cannot guarantee that there are absolutely no errors in this manual. Therefore, we are sure you will understand that we cannot accept
any legal claims resulting from the data, figures or descriptions.
purchase.
The instrument warranty covers manufacturing faults that are discovered within the warranty period. The warranty does not cover components that are replaced during maintenance work, e.g. batteries.
The warranty claim extends to restoring the instrument to readiness for
use but not, however, to any further claim for damages. Improper handling or unauthorized opening of the instrument invalidates any warranty claim.
Copyright
© 2011, SI Analytics GmbH
Reproduction in whole - or even in part - is prohibited without the
express written permission of SI Analytics GmbH, Mainz.
Printed in Germany.
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handylab Ox 12 List of contents
handylab Ox 12 - List of contents
1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.1 Keypad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.2 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.3 Jack field . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.4 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.1 Authorized use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.2 General safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.1 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.2 Initial commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.1 Switching on the measuring instrument . . . . . . . . . . . . . . . . . 17
4.2 Measuring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.2.1 General information . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.2.2 Measuring the D. O. concentration . . . . . . . . . . . . . . . 19
4.2.3 Measuring the D. O. saturation . . . . . . . . . . . . . . . . . 20
4.2.4 Measuring the D. O. partial pressure . . . . . . . . . . . . . 20
4.2.5 Selecting the measuring range, AutoRange . . . . . . . . 21
4.2.6 AutoRead AR (drift control) . . . . . . . . . . . . . . . . . . . . 21
4.3 Calibrating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.3.1 Calibrating with the air calibration vessel . . . . . . . . . . 25
4.3.2 Calibrating via a comparison measurement . . . . . . . . 27
4.3.3 Entering the salt content (salinity) . . . . . . . . . . . . . . . 29
4.4 Saving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
4.4.1 Saving manually . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
4.4.2 Saving automatically . . . . . . . . . . . . . . . . . . . . . . . . . 32
4.4.3 Outputting the data storage . . . . . . . . . . . . . . . . . . . . 34
4.4.4 Clearing the memory . . . . . . . . . . . . . . . . . . . . . . . . . 38
4.5 Transmitting data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
4.5.1 Data transmission interval (Int 2) . . . . . . . . . . . . . . . . 39
4.5.2 Recorder (analog output) . . . . . . . . . . . . . . . . . . . . . . 40
4.5.3 PC/external printer (RS232 interface) . . . . . . . . . . . . 41
4.5.4 Remote control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
4.6 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
4.7 Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
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List of contents handylab Ox 12
5 Maintenance, cleaning, disposal . . . . . . . . . . . . . . . . . . . . . 47
5.1 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
5.2 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
5.3 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
6 What to do if... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
7 Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
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handylab Ox 12 Overview
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1 Overview
The compact precision handheld meter handylab OX 12 enables you to carry
out oxygen (D. O.) measurements rapidly and reliably.
The handylab OX 12 provides the maximum degree of operating comfort, reliability and measuring certainty for all applications.
The proven calibration procedures and the special AutoRead function support you in your work with the handylab OX 12.
1 Keypad
2 Sample display
3 Jack field
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5
Overview handylab Ox 12
CAL
STO
RCL
RUN/ENTER
AR
M
M
STO
CAL
RCL
AR
RUN/ENTER
1.1 Keypad
Key functions
Select the measuring mode <M>:
– D. O. concentration
– D. O. saturation
– D. O. partial pressure
Save a measured value
<STO>
Switch measuring instrument on/off
<ON/OFF>
Select the calibration procedure <CAL>
Display/transmit measured values
<RCL>
Activate/deactivate the AutoRead function
<AR>
Switch on the salt content correctionIncrease values, scroll
<▲>
6
Switch off the salt content correctionDecrease
values, scroll
<▼ >
Confirm entries, start AutoRead
<RUN/ENTER>
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handylab Ox 12 Overview
AutoCal DIN
AutoCal TEC
mV/pH
1/
cm
K
/
%
°
F
TDS
UpH Sal
S/
m
cm
cm
M
Lin
Tref25
Tref20
nLF
RCL
Auto
Store
Time
Baud
Day.Month No.
Ident
Year
S
8
8.
8
8
8
8
O
C
%
mg/l
LoBat
ARng
AR
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1
Cal
°
mbar
Sal
Status display
Meas. value display
Function and
temperature display
Sensor symbol
3
1
2
1.2 Display
1.3 Jack field
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1 D. O. probe
2 Plug-in power supply (optional)
3 Serial interface RS 232 / analog output (recorder)
Caution
Only connect probes to the measuring instrument that cannot return any voltages or currents that are not allowed
(> SELV and > current circuit with current limiting).
Nearly all probes - especially SI Analytics probes - fulfill these conditions.
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Overview handylab Ox 12
1.4 Technical Data
Dimensions
and weight
Mechanical
structure
Electrical safety
Test certificates
Ambient
conditions
Length [mm] 172
Width [mm] 80
Height [mm] 37
Weight [kg] Approx. 0.3
Type of protection IP 66
Protective class III
cETLus, CE
Storage - 25 °C ... + 65 °C
Operation -10 °C ... + 55 °C
Relative atmospheric
< 90 % of annual average
humidity
Measuring ranges/
resolutions
Measuring range I
resolution
Measuring range II
resolution
T [°C] 0.0 ... 50.0 °C
mg/l % mbar
0 ... 19.99
0.01
0 ... 90.0
0.1
0 ... 199.9
0.1
0 ... 600
1
0 ... 199.9
0.1
0 ... 1250
1
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handylab Ox 12 Overview
Accuracy
(± 1 digit)
Concentration
mg/l
%
saturation
± 0.5 % of the measured value
at an ambient temperature of 5 °C ... 30 °C
± 0.5 % of the measured value
when measuring in the range of
± 10 K around the calibration temperature
Partial pressure
mbar
Temperature
± 0.5 % of the measured value
at an ambient temperature of 5 °C ... 30 °C
< 2 % at 0 ... 40 °C
compensation
T [°C] ± 0.1
Correction
functions
Salinity correction 0 ... 70.0 SAL
Air pressure correction Automatic through installation of pressure
sensor in the range 500 ... 1100 mbar
Analog output Automatic switchover when a recorder is connected.
Concentration Voltage Resolution
0 ... 19.99 mg/l 0 ... 1999 mV 0.01 mg/l per 1 mV
0 ... 90.0 mg/l 0 ... 900 mV 0.1 mg/l per 1 mV
Saturation Voltage Resolution
0 ... 199.9 0 ... 1999 mV 0.1 % per 1 mV
0 ... 600 % 0 ... 600 mV 1 % per 1 mV
D. O. partial pressure Voltage Resolution
0 ... 199.9 mbar 0 ... 1999 mV 0.1 mbar per 1 mV
0 ... 1250 mbar 0 ... 1250 mV 1 mbar per 1 mV
Accuracy ± 0.5 % of the displayed value ± 0.1 (% sat-
uration)
or
± 0.5 % of the displayed value ± 0.01 mg/l
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9
Overview handylab Ox 12
Internal resistance < 5 Ohm (current limited to max. 0.2 mA
output current)
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handylab Ox 12 Overview
Serial interface Automatic switchover when a PC or printer is connected.
Type RS232, data output
Baud rate Can be set to 1200, 2400, 4800, 9600 Baud
Data bits 8
Stop bit 2
Parity None
Handshake RTS/CTS + Xon/Xoff
Cable length Max. 15 m
Power supply
Batteries 4 x 1.5 V alkali-manganese batteries, Type
AA
Operational life Approx. 2000 operating hours
Mains FRIWO FW7555M/09, 15.1432.500-00
Friwo Part. No. 1883259
Input: 100 ... 240 V ~ / 50 ... 60 Hz / 400 mA
Output: 9 V = / 1.5 A
Connection max. overvoltage category II
Primary plugs contained in the scope of
delivery: Euro, US, UK and Australian.
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Overview handylab Ox 12
FCC Class A Equipment Statement
Note: This equipment has been tested and found to comply with
the limits for a Class A digital device, pursuant to Part 15 of the
FCC Rules. These limits are designed to provide reasonable
protection against harmful interference when the equipment is
operated in a commercial environment. This equipment
generates, uses, and can radiate radio frequency energy and, if
not installed and used in accordance with the instruction manual,
may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause
harmful interference in which case the user will be required to
correct the interference at his own expense.
Applicable
guidelines and
norms
EMC EC guideline 2004/108/EC
EN 61326-1
EN 61000-3-2
EN 61000-3-3
FCC Class A
Instrument safety EC guideline 2006/95/EC
EN 61010-1
ANSI/UL 61010-1
CAN/CSA-C22.2 No. 61010-1
Climatic class VDI/VDE 3540
Type of protection EN 60529
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handylab Ox 12 Safety
2Safety
This operating manual contains basic instructions that you must follow during
the commissioning, operation and maintenance of the measuring instrument.
Consequently, all responsible personnel must read this operating manual before working with the measuring system. The operating manual must always
be available within the vicinity of the measuring system.
Target group The measuring instrument was developed for work in the field and in the lab-
oratory.
We assume that, as a result of their professional training and experience, the
operators will know the necessary safety precautions to take when handling
chemicals.
Safety
instructions
Further notes
The individual chapters of this operating manual use safety instructions such
as the label shown below to indicate various hazards or dangers:
Caution
indicates instructions that must be followed precisely in order to avoid the
possibility of slight injuries or damage to the instrument or the environment.
Note
indicates notes that draw your attention to special features.
Note
indicates cross-references to other documents, e.g. operating manuals.
2.1 Authorized use
The authorized use of the measuring instrument consists exclusively of the
measurement of the dissolved oxygen (D. O.) content of liquid media in the
field and laboratory.
The technical specifications as given in section 1.4 T
observed. Only the operation and running of the measuring instrument according to the instructions given in this operating manual is authorized.
Any other use is considered to be unauthorized.
ECHNICAL DATA must be
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Safety handylab Ox 12
2.2 General safety instructions
This instrument is built and inspected according to the relevant guidelines
and norms for electronic measuring instruments (see section 1.4 T
D
ATA).
It left the factory in a safe and secure technical condition.
ECHNICAL
Function and oper-
ating safety
The smooth functioning and operational safety of the measuring instrument
can only be guaranteed if the generally applicable safety measures and the
specific safety instructions in this operating manual are followed during operation.
The smooth functioning and operational safety of the measuring instrument
can only be guaranteed under the environmental conditions that are specified
in section 1.4 T
ECHNICAL DATA.
If the instrument was transported from a cold environment to a warm environment, the formation of condensate can lead to the faulty functioning of the instrument. In this event, wait until the temperature of the instrument reaches
room temperature before putting the instrument back into operation.
Safe operation If safe operation is no longer possible, the instrument must be taken out of
service and secured against inadvertent operation!
Safe operation is no longer possible if the measuring instrument:
z has been damaged in transport
z has been stored under adverse conditions for a lengthy period of time
z is visibly damaged
Obligations of the
purchaser
z no longer operates as described in this manual.
If you are in any doubt, please contact the supplier of the instrument.
The purchaser of the measuring instrument must ensure that the following
laws and guidelines are observed when using dangerous substances:
z EEC directives for protective labor legislation
z National protective labor legislation
z Safety regulations
z Safety datasheets of the chemical manufacturers.
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handylab Ox 12 Commissioning
3 Commissioning
3.1 Scope of delivery
z Handheld meter, handylab OX 12
z Operating manual and short operating manual
z 4 batteries, 1.5 V Mignon type AA (in the instrument)
3.2 Initial commissioning
Perform the following activities:
z Set the date and time
z Connect the plug-in power supply.
Setting the date
and time
1 Press the <M> key and hold it down.
2 Press the <ON/OFF> key.
The display test appears briefly on the display.
3 Press the <RUN/ENTER> key repeatedly until the date ap-
pears on the display.
4 Set the date of the current day with <▲> <▼>.
5 Confirm with <RUN/ENTER>.
The date (month) flashes in the display.
6 Set the current month with <▲> <▼>.
7 Confirm with <RUN/ENTER>.
The year appears on the display.
8 Set the current year with <▲> <▼>.
9 Confirm with <RUN/ENTER>.
The hours flash on the display.
10 Set the current time with <▲> <▼>.
11 Confirm with <RUN/ENTER>.
The minutes flash on the display.
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12 Set the current time with <▲> <▼>.
13 Confirm with <RUN/ENTER>.
The instrument switches to the measuring mode.
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Commissioning handylab Ox 12
1
2
3
Connecting the
plug-in power sup-
ply
You can either operate the measuring instrument with batteries or with the
plug-in power supply. The plug-in power supply supplies the measuring instrument with low voltage (12 V DC). This saves the batteries.
Caution
The line voltage at the operating site must lie within the input voltage range
of the original plug-in power supply (see
section 1.4 T
ECHNICAL DATA).
Caution
Use original plug-in power supplies only (see
section 1.4 T
ECHNICAL DATA).
1 Plug the jack (1) into the socket (2) of the measuring instru-
ment.
2 Connect the original SI Analytics plug-in power supply (3) to an
easily accessible mains socket.
Note
You can also measure without the plug-in power supply. The functions of a
connected stirrer, however, can only be used when the plug-in power supply
is connected.
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handylab Ox 12 Operation
4 Operation
4.1 Switching on the measuring instrument
1 Connect the D. O. probe to the measuring instrument.
2 Press the <ON/OFF> key.
The display test appears briefly on the display.
The relative slope for the probe type that was just connected subsequently appears for approx. one second.
The measuring instrument then automatically switches to the measuring mode that was last selected. The display shows the relevant
measured value.
Note
The measuring instrument has an energy saving feature to avoid unnecessary battery depletion. The energy saving feature switches the measuring instrument off if no key has been pressed for an hour. The energy saving
feature is not active when the AutoStore function is active.
The energy saving feature is also not active
z if the power is supplied by the plug-in power supply,
z if the communication cable and a PC with a running communication pro-
gram are connected,
z if the recorder cable is connected,
z if the printer cable is connected (for external printers).
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Operation handylab Ox 12
4.2 Measuring
4.2.1 General information
You can measure the following variables:
z D. O. concentration
z D. O. saturation
z D. O. partial pressure
The measuring instrument is supplied with the following functions:
z AutoRange (automatic measurement range selection),
z The AutoRead function (drift control) for checking the stability of the mea-
surement signal. This ensures the reproducibility of the measuring signal.
For details of how to switch the AutoRead function on/off, see section
4.2.6.
Preparatory
activities
Temperature
sensor
Perform the following preparatory activities when you want to measure:
1 Connect the D. O. probe to the measuring instrument.
2 In conjunction with the D. O. probe, check or calibrate the measuring
instument. How to calibrate is described in section 4.3.
3 Select the measuring mode with <M>.
Note
Incorrect calibration of D. O. probes will result in incorrect measured values.
Calibrate at regular intervals.
The D. O. probe has an integrated temperature sensor that always measures
the current temperature of the test sample.
Caution
When connecting an earthed PC/printer, measurements cannot be performed in earthed media as incorrect values would result. The RS232 interface is not galvanically isolated.
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