RETIRED ›
This product is no longer available and has been replaced by: CS456,CS451.
CS431-L Water Level and Temperature Sensor
Services Available
Repair No
Calibration No
Free Support No

Overview

The CS431 is a pressure transducer manufactured for use with Campbell Scientific data loggers. It measures both water level and water temperature in canals, wells, ponds, harbors, lakes, streams and tanks. Campbell Scientific data loggers measure the sensor's output and then converts the measured value to the desired units.

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Benefits and Features

  • Compatible with most Campbell Scientific data loggers
  • Enhanced temperature calibration available (see Ordering Info)
  • Stainless-steel body and Viton and Teflon wire seals resist corrosion
  • Double-sealed cable harness protects the cable jacket and reduces the possibility of leakage
  • End cone is interchangeable with an NPT inlet allowing easy hookup and field calibration

The "-L" on a product model indicates that the cable length is specified at the time of order.

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Detailed Description

The CS431 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.

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 (see Ordering Info). Both cable options are vented.

Specifications

Available Pressure Ranges 5, 10, 30, 50, 100 psi
Pressure Measurement Repeatability ±0.1% FSO (typical)
Pressure Measurement Linearity ±0.1% FSO, (typical)
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 0° to 40°C
Operating Temperature -5° to +70°C
Diameter 2.13 cm (0.84 in.)
Maximum Cable Length 609.6 m (2000 ft)
Length 27.31 cm (10.75 in.)
Weight 1.4 kg (3 lb) with 15.24-m (50-ft) cable

Temperature Error

Standard Calibration (-SC) ±2.0% FSO (0° to 40°C)
Enhanced Calibration (-XC) ±0.2% FSO (0° to 40°C)

Compatibility

Note: The following shows notable compatibility information. It is not a comprehensive list of all compatible or incompatible products.

Data Loggers

Product Compatible Note
21X (retired)
CR10 (retired)
CR1000
CR10X (retired)
CR200X (retired)
CR206X (retired)
CR211X (retired)
CR216X (retired)
CR23X (retired)
CR295X (retired)
CR3000
CR500 (retired) The CR500 can only measure pressure. This data logger does not have a sufficient number channels to measure temperature.
CR5000 (retired)
CR510 (retired) The CR510 can only measure pressure. This data logger does not have a sufficient number channels to measure temperature.
CR800
CR850
CR9000 (retired)
CR9000X

Additional Compatibility Information

Data Logger Considerations

The pressure measurement requires two differential channels and one excitation channel, and the temperature measurement requires one single-ended channel and one excitation channel. The CR500 and CR510 do not have sufficient channels to measure both pressure and temperature.

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