CS476-L

Radar Water-Level Sensor

The CS475, CS476, and CS477 series of radar-based water-level sensors brings a highly accurate innovation to Campbell Scientific's array of sensors. The CS476 is built for higher accuracy and a longer range. Mounted above the water surface to be measured, the sensors use radar—short microwave pulses—to detect the distance from the sensor to the top of the water. Changes in the level of the surface are measured and used to calculate depth, flow rate, or volume of the water. The sensors do not come into contact with the liquid, avoiding corrosion, contamination, and debris damage. That, and the fact that there are no moving parts, make the sensors very low maintenance.


Features

  • Highest accuracy of our radar-based level sensors
  • High-frequency, economical, low-maintenance radar gauge
  • Compatible with all SDI-12 dataloggers
  • Low power use
  • Wide operating-temperature range
  • Accuracy valid over entire measurement and operating-temperature range
  • NEMA rated 4x
  • Use for rivers, lakes, retention ponds, or reservoirs

Specifications

  • Measurement Range: 2 inch to 98 ft (50 mm to 30 m)
  • Accuracy: ±0.1 in. (±3 mm) over entire measurement range
  • Resolution: 0.04 in. (1 mm)
  • 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: 8° (4-in dia horn)
  • Input Voltage: 9.6 to 16 Vdc
  • Surge Protection: 1.5 KVA
  • Typical Current Drain with 12 V Power Supply
    • Sleep: 4.7 mA
    • Measurement: 14 mA
  • Temperature Sensitivity: average TK: 2 mm/10 K, max 5 mm over the entire temperature range of -40° to +80°C
  • Vibration Resistance: Mechanical vibrations with 4 g and 5 to 100 Hz
  • Rating: NEMA 4x
  • Housing: Aluminum, coated IP66/68
  • Horn Material: 316L stainless steel