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CS475 Radar Water Level Sensor

Campbell Scientific

The CS475 is a radar-ranging sensor that monitors water level of rivers, lakes, tidal seas, and reservoirs. It can measure distances up to 20 meters. The CS475 outputs a digital SDI-12 signal to indicate distance and stage. Many of our dataloggers can read the SDI-12 signal. The CS475 emits short microwave pulses and then measures the elapsed time between the emission and return of the pulses. The elapsed time measurement is used to calculate the distance between the sensor and the target (e.g. water, grain, slurry). The distance value can then be used to determine depth.

Sales enquiry

  • FCC approved for outdoor use (FCC IC number M01PULS616263)

  • Measurement Range: 50 mm to 20 m 

    (2 in. to 65 ft)

  • Accuracy: ±5 mm (±0.2 in.) over entire measurement range

  • Resolution: 1 mm (0.04 in.)

  • Output Protocol: SDI-12

  • Radar Frequency: ~26 GHz

  • Electromagnetic Compatibility: Emission to EN 61326; Electrical Equipment Class B

  • Pulse Energy: 1 mW maximum

  • Beam Angle: 10°

  • Input Voltage: 9.6 to 16 Vdc

  • Surge Protection: 1.5 KVA

  • Operating Temperature: -40° to +80°C

  • Temperature Sensitivity: 

    average TK: 2 mm/10 K, maximum 5 mm over the entire temperature range of -40° to +80°C

Video on SDI -12 Mode