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Sommer SQ-8Ra Radar Flow and Velocity Sensor 20361
The SQ-8Ra flow sensor from Sommer is a non-contact radar discharge sensor for sewage and waste water flow monitoring.
This system measures flow velocity, water level and simultaneously calculates discharge quantities.
As this ultrasonic flow sensor operates with non-contact technology, it means that it can be installed outside of the body of water. The great advantage behind this is that this way, measurements are not interrupted or impaired by deposits and soiling in the water, which usually happens with submerged devices.
This makes the SQ sensors not only maintenance-free but also easy to access and install.
With a compact design and flexible mounting device, this sensor can easily be installed in existing measurement and process control systems - without the need to adapt or do any structural work.
Equipped with a mounting cube that allows a vertical / horizontal flexible fixation, the SQ sensors can be fixed underneath a bridge or at a crossbeam, at the ceiling of closed channels or in a service manhole of sewer channels. (Adjustable mounting devices available for purchase separately.)
Main Advantages
- Increased accuracy in discharge calculation due to continuous measurement of flow velocity and water level
- Non-contact measuring &; maintenance-free system
- Simple installation
- Seamless integration in existing systems
- No structural work needed in the water
- Multiple Data Output Interfaces: RS 485, Modbus, SDI-12, pulse signal, analogue
- Different size systems for different water levels
- Watertight, floodable and resistant housing withstands aggressive environments
- Integrated hydraulic model for precise discharge calculation
- Water level Measuring Range: 8 m;
- Velocity: 0.10 to 15 m/s (depending on the flow conditions)
- Optional: non-contact measurement of water temperature
Applications:
Waste- and process water, such as discharge measurements in sewer systems, wastewater treatment plants, channel systems, ducts, semi-filled pipes and other technical bodies of water.
Ideal to measure the duration and frequency of rain and flood events, as well as central measuring spots in the rainwater sewer system and/or at rainwater overflow basins.
Software and cables ordered separately.
<h4>Technical Specifications</h4><h4>General</h4><ul><li><strong>Dimensions:</strong> 272 x 153 x 186 mm (1 bracket for pipe with Ø 30 mm)</li><li><strong>Total weight: </strong>1.55 kg</li><li><strong>Protection class: </strong>IP 68</li><li><strong>Power supply: </strong>6 ... 30 V DC</li><li><strong>Power consumption (at 12 V):</strong> standby approx. 1 mA; active measurement approx. 140 mA</li><li><strong>Operating temperature: </strong>-35° ... 60° C</li><li><strong>Storing temperature:</strong> -40° ... 60° C</li><li><strong>Protection: </strong>over voltage protection, reverse power protection, lightning protection</li></ul><h4>Water Level Measurement</h4><ul><ul><li><strong>Measuring range:</strong> <ul><li>ultrasonic: 0 ... 6 m (type SQ-U)</li><li>radar: 0 ... 8 m (type SQ-8R)</li></ul></li></ul></ul><p><strong>SQ-8R</strong></p><ul><li><strong>Radar frequency:</strong> 26 GHz (K-Band)</li><li><strong>Opening angle:</strong> 10° (SQ-8R)</li><li><strong>Blanking distance:</strong> 0.05 m (SQ-8R)</li><li><strong>Resolution:</strong> 1 mm</li><li><strong>Accuracy: </strong>+/- 2 mm (SQ-8R)</li></ul><h4>Velocity Measurement</h4><ul><li><strong>Measuring principle:</strong> Doppler-radar</li><li><strong>Measuring range:</strong> 0.10 ... 15 m/s (depending on flow conditions)</li><li><strong>Accuracy: </strong>+/- 0.01 m/s; +/- 1 % FS</li><li><strong>Resolution: </strong>1 mm/s</li><li><strong>Direction recognition:</strong> +/-</li><li><strong>Measuring duration:</strong> 5 ... 240 sec.</li><li><strong>Measuring interval:</strong> 8 sec. ... 5 h</li><li><strong>Measuring frequency:</strong> 24 GHz (K-Band)</li><li><strong>Radar opening angle:</strong> 12°</li><li><strong>Distance to water surface:</strong> 0.10 ... 35 m</li><li><strong>Required minimum swell:</strong> 3 mm</li></ul><h4>Automatic Vertical Angle Compensation</h4><ul><li><strong>Accuracy </strong>+/- 1°</li><li><strong>Resolution </strong>+/- 0,1 °</li></ul><h4>Interfaces</h4><ul><li><strong>Analogue outputs: </strong>2 x 4 ... 20 mA - <ul><li>1 x for water level; 1 x selectable for flow rate or flow velocity</li></ul></li><li><strong>Pulse output:</strong> pulse per volume (selectable units)</li><li><strong>Digital Interfaces: </strong>1 x SDI-12; 1 x RS 485 or Modbus <ul><li>Transfer rate: 1.2 to 115,2 kBd</li><li>Protocol: various ASCII-protocols</li><li>Output: discharge, flow velocity, water level, quality parameter</li></ul></li></ul> | |
| Manufacturer | Sommer |
| Manufacturer P/n | 20361 |