Campbell Scientific CS450, CS455 User Manual
CS450/CS455 Pressure
Transducer
Revision: 1/13
Copyright © 2009-2013
Campbell Scientific, Inc.
Warranty
“PRODUCTS MANUFACTURED BY CAMPBELL SCIENTIFIC, INC. are
warranted by Campbell Scientific, Inc. (“Campbell”) to be free from defects in
materials and workmanship under normal use and service for twelve (12)
months from date of shipment unless otherwise specified in the corresponding
Campbell pricelist or product manual. Products not manufactured, but that are
re-sold by Campbell, are warranted only to the limits extended by the original
manufacturer. Batteries, fine-wire thermocouples, desiccant, and other
consumables have no warranty. Campbell’s obligation under this warranty is
limited to repairing or replacing (at Campbell’s option) defective products,
which shall be the sole and exclusive remedy under this warranty. The
customer shall assume all costs of removing, reinstalling, and shipping
defective products to Campbell. Campbell will return such products by surface
carrier prepaid within the continental United States of America. To all other
locations, Campbell will return such products best way CIP (Port of Entry)
INCOTERM® 2010, prepaid. This warranty shall not apply to any products
which have been subjected to modification, misuse, neglect, improper service,
accidents of nature, or shipping damage. This warranty is in lieu of all other
warranties, expressed or implied. The warranty for installation services
performed by Campbell such as programming to customer specifications,
electrical connections to products manufactured by Campbell, and product
specific training, is part of Campbell’s product warranty. CAMPBELL
EXPRESSLY DISCLAIMS AND EXCLUDES ANY IMPLIED
WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE. Campbell is not liable for any special, indirect,
incidental, and/or consequential damages.”
Assistance
Products may not be returned without prior authorization. The following
contact information is for US and international customers residing in countries
served by Campbell Scientific, Inc. directly. Affiliate companies handle
repairs for customers within their territories. Please visit
www.campbellsci.com to determine which Campbell Scientific company serves
your country.
To obtain a Returned Materials Authorization (RMA), contact CAMPBELL
SCIENTIFIC, INC., phone (435) 227-9000. After an applications engineer
determines the nature of the problem, an RMA number will be issued. Please
write this number clearly on the outside of the shipping container. Campbell
Scientific’s shipping address is:
CAMPBELL SCIENTIFIC, INC.
RMA#_____
815 West 1800 North
Logan, Utah 84321-1784
For all returns, the customer must fill out a “Statement of Product Cleanliness
and Decontamination” form and comply with the requirements specified in it.
The form is available from our web site at www.campbellsci.com/repair. A
completed form must be either emailed to repair@campbellsci.com or faxed to
(435) 227-9106. Campbell Scientific is unable to process any returns until we
receive this form. If the form is not received within three days of product
receipt or is incomplete, the product will be returned to the customer at the
customer’s expense. Campbell Scientific reserves the right to refuse service on
products that were exposed to contaminants that may cause health or safety
concerns for our employees.
Table of Contents
PDF viewers: These page numbers refer to the printed version of this document. Use the
PDF reader bookmarks tab for links to specific sections.
1. Introduction.................................................................1
1.1 Initial Inspection and Handling Guidelines..........................................1
2. Specifications .............................................................2
3. Configuration ..............................................................3
3.1 Connection ...........................................................................................4
3.1.1 Using the A200 .............................................................................4
3.1.1.1 Driver Installation ..............................................................4
3.1.1.2 Wiring ................................................................................4
3.1.1.3 Powering the Sensor...........................................................4
3.1.1.4 Determining which COM Port the A200 has been
Assigned .........................................................................4
3.1.2 Device Configuration Utility (version 1.12 or higher)..................6
3.1.3 SDI-12 Transparent Mode ............................................................8
3.1.4 RS-232 Connection via PC Terminal Software ............................9
3.2 SDI-12 Commands.............................................................................11
3.2.1 SDI-12 Addresses .......................................................................11
3.2.2 Extended SDI-12 Commands......................................................12
3.2.2.1 Units .................................................................................12
3.2.2.2 Sample Number................................................................13
4. Installation.................................................................13
4.1 Vent Tubes .........................................................................................13
4.2 Dislodging Bubbles............................................................................13
4.3 Water Depth .......................................................................................13
4.4 Well Installations ...............................................................................14
4.5 Other Installations ..............................................................................14
4.6 Calculate Offset..................................................................................14
5. Wiring......................................................................... 15
5.1 SDI-12................................................................................................15
5.2 RS-232 ...............................................................................................16
5.3 A150/CWS900 ...................................................................................16
6. Programming ............................................................16
6.1 Using SCWIN ....................................................................................16
6.2 Using CRBasic or Edlog ....................................................................17
6.2.1 CRBasic Programming ...............................................................17
6.2.2 Edlog Programming ....................................................................18
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Table of Contents
7. Maintenance ..............................................................19
7.1 Every Visit......................................................................................... 20
7.2 Every Two to Three Years or on a Rotating Schedule ...................... 20
8. Troubleshooting........................................................20
Appendix
Calibration Certificate.............................................A-1
A.
Figures
3-1. A200 Sensor-to-PC Interface............................................................... 5
3-2. Device Configuration Utility............................................................... 6
3-3. Connect screen .................................................................................... 7
3-4. Conunits .............................................................................................. 7
3-5. Terminal Emulator .............................................................................. 8
3-6. HyperTerminal .................................................................................. 10
5-1. A150 wired for CS450 pressure sensor and CWS900 connector ...... 16
A-1. Calibration certificate ...................................................................... A-3
Tables
3-1. Factory Settings................................................................................... 3
3-2. A200 Wiring........................................................................................ 5
3-3. RS-232 Settings................................................................................... 9
3-4. RS-232 Terminal Commands............................................................ 10
3-5. SDI-12 Commands............................................................................ 11
5-1. SDI-12 Wiring................................................................................... 15
5-2. RS-232 Wiring .................................................................................. 16
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CS450/CS455 Pressure Transducer
The CS450/CS455 Submersible Pressure Transducer is designed for general pressure
measurements. It uses the SDI-12 or RS-232 communications protocols to communicate
with an SDI-12 or RS-232 recorder to simplify installation and programming. The
CS450/CS455 can be used with an A150 desiccated case allowing the transducer to be
connected to a CWS900 wireless sensor or prewired enclosure.
1. Introduction
The CS450/CS455 Submersible Pressure Transducer provides reliable,
accurate pressure/level measurements that are fully temperature compensated.
Combining the sensor, analog measurement, and signal processing within a
single housing results in the integration of state-of-the-art sensor and
measurement technology. The 24-bit A/D has simultaneous 50/60-Hz rejection
and automatic calibration for each measurement. A number of additional
advanced measurement techniques are employed to harness the best-possible
performance available from today’s state-of-the-art pressure-sensor technology.
The transducer reverts to a low-power sleep state between measurements. A
series of measurements are performed yielding a temperature and pressure value.
This measurement cycle takes less than 1.5 seconds. The sensor can also be
configured to output pressure only in less than 1 second. The measurement cycle
is activated by commands via SDI-12 or RS-232 Terminal commands.
The design utilizes a piezoresistive sensor housed in a 316L Stainless Steel
(CS450) or Titanium (CS455) package to enhance reliability. The rugged
construction makes the CS450/CS455 suitable for water-level measurement in
irrigation applications, water wells, lakes, streams, and tanks. The Titanium
package of the CS455 makes it ideal for salt water or other harsh environments.
The cable incorporates a vent tube to compensate for atmospheric-pressure
fluctuations and the jacket is made of rugged Hytrel, designed to remain flexible
and tough, even under harsh environmental conditions.
The CS450/CS455 has two communication options: SDI-12 or RS-232. The
CS450/CS455 is shipped from the factory with both communications options
enabled; there is no configuration required. As an SDI-12 sensor, the
CS450/CS455 is shipped with an address of 0.
Two values are output by the CS450/CS455, pressure/level and temperature.
The CS450/CS455 is shipped from the factory to output pressure in psig and
temperature in degrees Celsius.
1.1 Initial Inspection and Handling Guidelines
Upon receipt of the CS450/CS455, inspect the packaging for any signs of
shipping damage, and, if found, report the damage to the carrier in accordance
with policy. The contents of the package should also be inspected and a claim
filed if any shipping-related damage is discovered.
1
CS450/CS455 Pressure Transducer
Care should be taken when opening the package not to damage or cut the cable
jacket. If there is any question about damage having been caused to the cable
jacket, a thorough inspection is prudent.
The model number and pressure range is etched on the housing. Check this
information against the shipping documentation to ensure that the expected
model number and range were received.
Gauge pressure (Vented) devices must always have a desiccant tube attached.
New desiccant is blue in color. As the desiccant material absorbs water vapor,
it begins to turn pink, and eventually white when fully expired. Desiccant tubes
should be inspected regularly (i.e., every two months) and historical
information will help to baseline desiccant replacement requirements for a
given application/climate.
CAUTION
The desiccant tube is shipped with a black cap to cover the
vent hole. This cap MUST be removed prior to installation.
Remember that although the CS450/CS455 is designed to be a rugged and
reliable device for field use, it is also a highly precise scientific instrument and
should be handled as such. There are no user-serviceable parts and any attempt
to disassemble the device will void the warranty.
2. Specifications
Power Requirements: 6 to 18 Vdc
Power Consumption: Quiescent current: < 80 µA
Measurement/communication current: 8 mA
Maximum peak current: 40 mA
Measurement Time: Less than 1.5 s
Outputs: SDI-12 (version 1.3) 1200 Baud
RS-232 9600 Baud
Measurement Ranges:
for 1-s measurement
2
Pressure (PSIG) Pressure (kPa) ft of fresh water
0 to 2.9 0 to 20 0 to 6.7
0 to 7.25 0 to 50 0 to 16.7
0 to 14.5 0 to 100 0 to 33.4
0 to 29 0 to 200 0 to 67
0 to 72.5 0 to 500 0 to 167
0 to 145 0 to 1000 0 to 334.5
Accuracy: ±0.1% FS TEB* or
±0.05% FS TEB**
Resolution: 0.0035% FS
CS450/CS455 Pressure Transducer
Overpressure: 2x pressure range
Dry Storage Temperature: -10° to 80°C
CAUTION
Sensor will be damaged if it is encased in frozen liquid.
Operating Temperature: 0° to 60°C
Temperature Accuracy: ±0.2°C
Maximum Cable Length: SDI-12 — one sensor connected to a single port can
communicate up to approximately 457 m (1500 ft).
With 10 sensors connected to a single port,
each sensor can have up to 60 m (200 ft).
RS-232 — 15 m (50 ft).
Cable Type: 5 Conductor, 26 AWG
Hytrel Jacket
Body Material: CS450 – 316L Stainless Steel
CS455 – Titanium
Element Material: CS450 – 316L Stainless Steel
CS455 – Hastelloy
Top Cone Material: Delrin
Dimensions: Length 213.36 mm (8.4 in)
Diameter 21.34 mm (0.84 in)
Distance from pressure-sensor interface
(black line etched on housing) to:
End of NPT fitting: 2.86 cm (1.13 in)
End of standard nose cone: 4 cm (1.58 in)
End of weighted nose cone: 11.59 cm (4.56 in)
Weight: CS450: 0.18 kg (0.40 lb)
CS455: 0.11 kg (0.25 lb)
Cable: 0.421 kg/m (0.283 lb/ft)
* Total ERROR Band (TEB) includes the combined errors due to nonlinearity,
hysteresis, nonrepeatability, and thermal effects over the compensated
temperature range, per ISA S51.1.
** 0.05% FS accuracy not available in the 0 – 2.9 psig range.
3. Configuration
The CS450/CS455 is configured at the factory with default settings:
TABLE 3-1. Factory Settings
SDI-12 Address 0
RS-232 Baud Rate 9600
Pressure/Level Units PSIG
Temperature Units Celsius
3
CS450/CS455 Pressure Transducer
3.1 Connection
Communicating with the CS450/CS455 requires the sensor to be either
connected to a PC or an SDI-12 Recorder. The sensor typically connects to a
PC via the A200 sensor to PC interface. Many SDI-12 Recorders allow
communication to the sensor via a terminal screen. Configurable settings can
be changed via SDI-12 commands or by using Campbell Scientific’s software
Device Configuration Utility.
3.1.1 Using the A200
The A200 or another device is required to connect the CS450/CS455 to a PC.
This allows sensor settings to be changed via our Device Configuration Utility.
3.1.1.1 Driver Installation
If the A200 has not been previously plugged into your PC and your PC
operating system is not Windows 7, the A200 driver needs to be loaded onto
your PC.
NOTE
3.1.1.2 Wiring
3.1.1.3 Powering the Sensor
3.1.1.4 Determining Which COM Port the A200 Has Been Assigned
Drivers should be loaded before plugging the A200 into the PC.
The A200 drivers can be downloaded, at no charge, from:
www.campbellsci.com/downloads.
One end of the A200 has a terminal block while the other end has a type B
female USB port. The terminal block provides 12V, G, TX, and RX terminals
for connecting the sensor (see FIGURE 3-1 and TABLE 3-2).
A data cable (pn 17648) ships with the A200. This cable has a USB type-A
male connector that attaches to a PC’s USB port, and a type B male connector
that attaches to the A200’s USB port.
The A200 provides power to the sensor when it is connected to a PC’s USB
port. An internal DC/DC converter boosts the 5-Vdc supply from the USB
connection to a 12-Vdc output that is required to power the sensor.
When the A200 driver is loaded, the A200 is assigned a COM port number.
This COM port number is needed when using the Device Configuration Utility
or a PC terminal software such as HyperTerminal.
4
Often, the assigned COM port will be the next port number that is free.
However, if other devices have been installed in the past (some of which may
no longer be plugged in), the A200 may be assigned a higher COM port
number.
To check which COM port has been assigned to the A200, you can monitor the
appearance of a new COM port in the list of COM ports offered in your
CS450/CS455 Pressure Transducer
software package (e.g., LoggerNet) before and after the installation, or look in
the Windows Device Manager list under the ports section (access via the
control panel).
FIGURE 3-1. A200 Sensor-to-PC Interface
TABLE 3-2. A200 Wiring
Color
Sensor
Cable Label
A200
Terminal
Red 12V +12Vdc
Black G G
White C Tx
Blue G Rx
Yellow G G
Clear Signal Ground G
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