Descripción
Descripción
With the system of one master-radar sensor and several slave-radar sensors the velocity is measured at several spots throughout the whole water cross-section. Therefore a very high accuracy of the discharge measurement is guaranteed also for very wide water bodies.
FEATURES AND ADVANTAGES
- Discharge measurement with high accuracy – ideal use for very wide rivers with inhomogeneous velocity distribution
- One water level measurement and multiple, individual velocity measurements
- Well proven RQ-radar technique: non-contact measurement, maintenance free system, flood-proof
- No structural work is necessary in the water
- Recognition of flow direction and hysteresis effects
- Measurement in tidal waters
- Measurement in backwater situations
- Measures even where weed growth prevails and sensor is not affected by turbidity
- Measuring range from +/- 0.10 to +/- 15 m/s (depending on the flow conditions)
- Analogue outputs from 4 to 20 mA (optional)
TECHNICAL DETAILS
GENERAL
- Dimensions master: 338 mm x 333 mm x 154 mm | slave: 175 mm x 154 mm x 246 mm
- Total weight master: 5.4 kg | slave: 2.7 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 lightning protection
WATERLEVEL MEASUREMENT
- Measuring 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
- Measuring range 0.10 … 15 m/s (depending on flow conditions)
- Accuracy +/- 0.01 m/s; +/- 1 % FS
- Resolution 1 mm/s
- Direction recognition +/-
- Measuring duration 5 … 240 sec.
- Measuring interval 8 sec. … 5h
- Measuring frequency 24 GHz (K-Band)
- Radar opening anlge 12°
- Distance to water surface 0.50 … 35 m
- Minimum swell needed 3 mm
AUTOMATIC VERTICAL ANGLE COMPENSATION
- Accuracy +/- 1°
- Resolution +/- 0.1°
INTERFACE
- Interface 1x SDI-12 1 x RS 485 or Modbus
- Transfer rate 1.2 to 19.2 kBd
- Protocol diverse ASCII-protocols
- Output discharge rate, flow velocity, waterlevel, quality parameters
