RQ-30

NON-CONTACT DISCHARGE RADAR RQ-30 / RQ-30A

rq-30_01rq-30_02rq-30_06rq-30_07

Product Description

Descripción

The RQ-30 is a sensor for continuous discharge measurement of rivers, open channels and canals with known cross-section profile. The sensor uses innovative radar technology to measure velocity, water level and discharge. It enables reliable, non-contact measurement without the need for structural work in the water.

  • Non-contact, maintenance free measurement system
  • No structural work is necessary in the water
  • No threat to the systsem through flooding
  • Low power consumption enables operation using solar cells
  • Recognition of flow direction
  • Measuring range from +/- 0.10 to +/- 15 m/s (depending on the flow conditions)
  • Recognition of hysteresis-effects
  • Measurement in backwater situations
  • Measures even where weed growth prevails and sensor is not affected by turbidity
  • Measurement in tidal waters
  • Automatic angle measurement
  • Optional (RQ-30a): analogue outputs from 4 to 20 mA
  • GENERAL

    • Dimensions 338 mm x 333 mm x 154 mm
    • Total weight 5.4 kg
    • Protection IP 67
    • Power supply 6 … 30 V
    • Power consumption at 12V standby approx. 1mA; active operation approx. 140mA
    • Operating temperature -35 … 60°C
    • Miscellaneous integrated lightening protection

    WATERLEVEL MEASUREMENT

    • Measurement range 0 … 15 m standard version / 0 … 35 m extended version
    • Resolution 1 mm
    • Radar frequency 26 GHz (K-Band)
    • Radar opening angle 10°

    VELOCITY MEASUREMENT

    • Measurement range 0.10 … 15m/s (depending on flow conditions)
    • Accuracy +/- 0.01 m/s; +/- 1 % FS
    • Resolution 1 mm/s
    • Direction recognition +/-
    • Measurement duration 5 … 240 sec.
    • Measurement interval 8 sec. … 5h
    • Measurement frequency 24 GHz (K-Band)
    • Radar opening angle 12°
    • Distance to water surface 0.50 … 35 m
    • Necessary minimum wave height 3 mm

    AUTOMATIC VERTICAL ANGLE COMPENSATION

    • Accuracy +/- 1°
    • Resolution +/- 0.1°

    INTERFACE

    • Analogue Output (RQ-30a) 3x output 4 – 20 mA for water level, velocity and discharge
    • Digital Interface 1 x SDI-12; 1 x RS 485 or Modbus
      • Transfer rate: 1.2 to 19.2 kBd
      • Protocol: various ASCII-protocols
      • Output: water level, velocity and discharge, quality parameters