Campbell CS451, Instruction Manual

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CS451/CS456 Submersible Pressure Transducer
8. Click on Wiring Diagram and wire according to the wiring diagram
generated by SCWin Short Cut.
Refer to Section 7, Operation , for wiring, offset calculation, and
programming information if not using SCWin Short Cut.
NOTE
5. Overview
The CS451/CS456 Submersible Pressure Transducer is designed to provide a
reliable, accurate pressure/level measurement that is fully temperature
compensated.
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 transducer 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 second. The transducer 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 uses a piezoresistive sensor housed in a 316L stainless-steel (CS451)
or titanium (CS456) package to enhance reliability. The rugged construction
makes the CS451/CS456 suitable for water level measurement in irrigation
applications, water wells, lakes, streams and tanks. The titanium package of the
CS456 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.
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