OTT SVR 100
Surface Velocity Radar for Measuring Open Channel Flow
OTT SVR 100 is a simple, non-contact, compact surface water velocity radar sensor. Designed for measuring flow in open channels and rivers where reliable velocity data is required continuously, during floods or periods of high concentrations of suspended sediments.
The sensor is mounted above the water surface, away from floating debris using a flexible bracket for vertical or horizontal installation. Velocity measurements and sensor status information from the integrated vibration and tilt sensor is available via SDI-12 over RS-485 and Modbus. It is also compatible with OTT Prodis 2 software for system calibration.
- Fixed installation
- Identify data influenced by sensor movement (e.g., wind, traffic) using meta data from integrated vibration and tilt sensors
- Non-contact surface velocity radar
- No
- 0.08 ... 15 m/s (0.26 … 49 ft./s)
Velocity Measurements:
- Continuous non-contact surface velocity measurements during low, normal or high flows
- Identify data influenced by sensor movement (e.g., wind, traffic) using meta data from integrated vibration and tilt sensors
- Automatically detect flow direction
- Eliminate/reduce effects of wind, precipitation, vibration, or waves by setting site specific filters
Installation / Maintenance:
- Sensor unaffected by floating debris or suspended sediment by installing above the water surface
- Flexible sensor mounting for quick installation on horizontal or vertical structures
- Easily conceal sensor with compact size and flexible mounting options
- Virtually maintenance free
System Integration / Compatibility:
- Simple system integration, no deep knowledge required
- Low power, ideal for powering with solar power
- Easily integrate with new or existing systems using SDI-12 (over RS-485) or Modbus protocols
- Compatible with OTT Prodis 2 for system calibration
Open channels, including:
- Rivers
- Streams
- Canals
- Irrigation canals
- Process water canals
- Outlets / inlets
| Measurement device for | Contactless velocity measurement |
| Measurement Range | 0.08 ... 15 m/s (0.26 … 49 ft./s) |
| Resolution | 0,1 mm/s , (0.0001 ft) |
| Accuracy | ± 2% of measured value |
| Radar opening angle | 12° Azimuth 24° Elevation |
| Detection distance | 1 ... 50 m (3.3 … 164 ft.) |
| Distance to water | 0.5 ... 25 m (1.64 … 82 ft.) |
| Radar frequency | 24 GHz (K-band) |
| Interfaces | |
| Serial interfaces | |
| Protocolls | SDI-12, MODBUS |
| Power supply | 9 ... 27 VDC |
| Power/current consumption | |
| active | typ. < 112 mA at 12 VDC |
| Maximum Current | < 250 mA |
| Dimensions | |
| (LxWxH) | 134,5 x 114,5 x 80 mm (5.3 x 4.5 x 3.2 in) (without mounting bracket) |
| Material | |
| Housing | ASA & Aluminium |
| Radom | TFM PTFE |
| Mounting | 1.4301 (V2A) |
| Rotation range of swivel mount | Lateral axis: ±90 ° Longitudinal axis: ±15 ° |
| Cable length | 10 m (32.8 ft) |
| Weight | |
| with mounting bracket | 820 g (1.81 lbs.) |
| without mounting bracket | 1530 g (3.37 lbs.) |
| Temperature, in operation | -40° ... +85°C (-40° … +185° F) |
| Housing | IP 68 |