OTT SVR 100 Surface Velocity Radar
SKU: SVR 100
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Non-contact sensor for measuring open channel flow continuously.
Free local delivery
Manufacturer warranty
Local SG support
Description
The Ott SVR 100 is the ideal sensor to collect surface water velocity measurements without being installed in the water, for all the benefits of non-contact measurement.
This simple and compact radar sensor with integrated SDI-12 interface provides data during floods or times of high suspended sediments. By being installed above the water, the sensor is safe from rising water levels or floating debris.
Only the Ott SVR 100 has an ultra-compact mounting design with flexible angle of inclination for mounting vertically or horizontally with measurement quality and vibration index parameters.
The sensor allows specialists like hydrologists and program managers to identify data influenced by sensor movement (e.g., wind, traffic) using meta data from integrated vibration and tilt sensors. The sensor easily integrates with new or existing systems using SDI-12 or SDI-12 (over RS-485). It is also compatible with Ott Prodis 2 software used for system calibration.
Benefits
State-of-art measuring principle technology
Oriented parallel to the main flow direction and tilted against the water surface, the sensor is transmitting and receiving electromagnetic waves. The sensor detects a change in frequency of returning signals if the water surface is rough and in motion (Doppler shift). From this the water surface velocity can be derived.
Informs when instream velocity measurements may be required
When a shift is detected, depending on the nature and extent of the shift, it can indicate when a field visit is necessary. This ultimately improves data quality by enabling fast response to changes.
Reduces number of field visits and total cost of ownership
By mounting safely above the water surface away from floating debris and by having low-maintenance requirements, the sensor can remain operating uninterrupted for longer periods of time to save on unnecessary field visits and long-term costs.
A leading indicator to detect shifts in existing discharge rating curves
If you have a rating curve based on flow meter or ADCP measurements and you are measuring continuous surface water velocity, you can use real measurements to verify the extrapolated part of the rating curve.
Technical Attributes
| Protocol | SDI-12 MODBUS |
| Beam Angle | 12° Azimuth 24° Elevation |
| Measuring Range | 0.26 … 49.12 ft/s (0.08 … 15 m/s) |
| Range EU | Rotation Range of Swivel Mount – Lateral axis: ±90° Longitudinal axis: ± 15° |
| Cable Length | SDI-12 / RS-232: max. 65 m (9,600 Baud) RS-485: max. 500 m (9,600 Baud) |
| Operating Frequency | 24 GHz (K-band) |
| Power Consumption | Active typ. 90 mA @ 12 VDC Standby: 7.5 mA @ 12 VDC Max. current: 175 mA |
| Measurement distance | Distance to water: 1.64 … 82 ft (0.5 … 25 m) |
| Power supply | 9 – 27 VDC |
| Measurement Range | 0.08 … 15 m/s (0.26 … 49.12 ft/s) |
| Dimensions (free text) | 5.3 x 4.5 x 3.2 in (134.5 x 114.5 x 80 mm) without mounting bracket |
| Interface | RS-232, RS-485, SDI-12 |
| Material | Housing: ASA and Aluminum Radom: TFM PTFE Mounting: 1.4301 (V2A) |
| Operating voltage | 9 … 27 VDC |
| Resolution EU | 0.0003 ft (0.1 mm/s) |
| Casing IP Rating | IP68 |
| Operating temp range 1 | -40° … +185° F (-40° … +85° C) |
| Detection Limit | 3.3 … 164 ft (1 … 50 m) |
| Weight EU | Weight without mounting support: 1.81 lbs (820 g) Weight with mounting support: 3.37 lbs (1530 g) |
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