SQ-Series non-contact discharge measurement
Non-contact discharge measurement of wastewater and industrial effluents
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The radar sensors of the SQ series continuously measure the discharge (flow) volume of sewer systems, ducts, semi-filled pipes and other technical channels in the field of wastewater and industrial effluents.
Due to the contact-free measurement deposits and other solids in the water do not harm the sensor. This is especially advantageous for the measurement of wastewater. The compact design allows an installation in manholes or in sewage systems.
- Non-contact measuring, free of maintenance
- Discharge calculation through continuous measurement of flow velocity and water level (increased accuracy as through level measurement only)
- No structural measures in water bodies required
- No system risks at high water
- Simple installation and integration in existing measurement and process control systems
- Watertight, floodable and resistant housing
- Application in aggressive environments
- Integrated hydraulic model for precise discharge calculation
- Measuring range: water level 3 m/ 6 m/ 8 m; velocity from 0.1 to 15 m/s
- Optional: non-contact measurement of water temperature
| General | |
| Dimensions | 3272 mm x 153 mm x 186 mm |
| Total weight | 1.55 kg |
| Protection | IP 68 |
| Power supply | 6...30 VDC |
| Power consumption at 12V | standby approx. 1 mA; active operation approx. 140 mA |
| Operating temperature | -35...+60 °C |
| Miscellaneous | protection against over voltage, reverse power and lightning |
| Waterlevel measurement | |
| Measurement range | ultrasonic: 0...3 m (SQ-3); 0...6 m (SQ-6) radar: 0...8 m (SQ-8R) |
| Blanking distance | 0.3 m (SQ-3); 0.35 m (SQ-6); 0.05 m (SQ-8R) |
| Accuracy | +/- 0,25 % FS (SQ-3, SQ-6); +/- 2 mm (SQ-8R) |
| Resolution | 1 mm |
| Radar frequency | 26 GHz (K-Band) |
| Radar opening angle | 15° (SQ-3); 12° (SQ-6); 10° (SQ-8R) |
| Velocity measurement | |
| Measuring principle | doppler-radar |
| 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 | 0.1...35 m |
| Minimum swell needed | 3 mm |
| Automatic vertical angle compensation | |
| Accuracy | +/- 1° |
| Resolution | +/- 0.1° |
| Interfaces | |
| Analogue outputs (SQ-analogue) | 2 x 4...20 mA (1x for water level; 1 x selectable for flow rate of flow velocity) |
| Pulse output | pulse per volume (selectable units) |
| Digital Interfaces | 1x SDI-12; 1 x RS 485 or Modbus Transfer rate: 1.2 to 115.2 kBd Protocol: various ASCII-protocols Output: discharge, flow velocity, water level, quality parameter |