Campbell Scientific CS431 Submersible Pressure Transducer - Manual (Page 5)

CS431 Submersible Pressure
Transducer
1. General Description
The CS431 PS9805 Pressure Transducer is manufactured by Instrumentation
Northwest for use with Campbell Scientific dataloggers. It uses piezoresistive
strain gage technology to measure water level and an on-board thermistor to
measure temperature. Piezoresistive transducers include a strain gage bonded
to a pressure-sensitive diaphragm. Electrical resistance changes as pressure
changes on the diaphragm. Campbell Scientific dataloggers measure the
resistance then convert the measured value to the desired units. The CS431 is
compatible with most of our dataloggers (see datalogger compatibility in
specifications).
The CS431 has a 316 stainless steel body and Viton® and Teflon® wire seals
that resist corrosion. Its double-sealed cable harness protects the cable jacket
and reduces the possibility of leakage. The end cone is interchangeable with a
¼" NPT inlet allowing easy hookup and field calibration. You can choose a
polyurethane or Teflon cable. Both cable options are vented. An optional
enhanced measurement calibration is available that allows more accurate
compensation for temperature variations.
2. Specifications
Datalogger Compatibility: All except CR200 series; the CR500 and CR510
can measure water level only.
Available Pressure Ranges: 5, 10, 30, 50, 100 psi
Pressure Measurement Repeatability: ±0.1% FSO, typical
Pressure Measurement Linearity: ±0.1% FSO, typical
Temperature Error: ±2.0% FSO, 0° to 40°C
Temperature Error when using Enhanced Temperature option: ±0.2% FSO,
0° to 40°C
Typical Output Voltage Sensitivity: 15 to 16 mV/V at 20°C
Typical Bridge Resistance: 4 kohm at 20°C
Typical Excitation Voltage: 0.8 V
Compensated Temperature Range: 0° to 40°C
Operating Temperature Range: -5° to 70°C
Maximum Cable Length: 2000 ft
Dimensions: 0.84" (2.13 cm) diameter, 10.75" (27.31 cm) length
Weight: 3 lbs (1.4 kg) with 50 ft cable
Over Range Protection: 2X full scale range
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