Descripción
Descripción
Innovative radar sensor for non-contact discharge measurement of rivers, open channels and canals with the possibility to use and integrate external water level data.
FEATURES AND ADVANTAGES
- Discharge measurment by means of innovative radar technology and through integration of external data (water level and cross section profile)
- Upgrading of existing measuring sites with additional surface velocity measurement
- Well proven RQ radar technology: non-contact measuring, maintenance free and 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 in waters with high turbidity
- Measuring range from +/- 0.10 bis +/- 15 m/s (depending on flow conditions)
- Analogue outputs 4 to 20 mA (optional)
TECHNICAL DETAILS
GENERAL
- Dimensions 241 mm x 246 mm x 154 mm
- Total weight 2.7 kg
- Protection IP 67
- Power supply 6 … 30 V
- Power consumption at 12V standby approx. 1.5 mA; active operation approx. 140 mA
- operating temperatrue – 35 … 60°C
- Miscellaneous integrated lightning protection
SURFACE 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 +/-
- Measurement duration 5 … 240 sec.
- Measurement interval 8 sec. … 5h
- Measuring frequency 24 GHz (K-Band)
- Radar opening angle 12°
- Distance to water surface 0.50 … 35 m
- Necessary minimum swell 3 mm
AUTOMATICAL VERTICAL ANGLE COMPENSATION
- Accuracy +/- 1°
- Resolution +/- 0.1°
INTERFACE
- Interface 1 x SDI-12; 1 x RS 485 or Modbus; transfer rate: 1.2 to 19.2 kBd; protocol: various ASCII-protocols; output: discharge rate, flow velocity, water level, quality parameters
- Input (water level values) electrical signal: 4 … 20 mA or 0 … 2.5 V
- Output 3x analogue outputs, 4 … 20 mA; for water level, flow velocity and discharge rate
