For high-accurate flow measurement by means of ultrasonic cross correlation method
- Infiltration measurement (extraneous water)
- Influent control
- Billing measurement places
- Discharge constructions
- Precipitation discharge measurements
The Mini sensor family provides the best possible sensors to detect lowest flow levels e.g. for infiltration measurement (extraneous water) or indirect discharge measurement.
The sensors use the proven ultrasonic cross correlation method patented by NIVUS. This method allows to detect and to indicate flow profiles starting at flow levels as low as a few centimeters.
Due to their shape the sensors are particularly suitable for small geometries and help to avoid backwater effects, the risk of build-up and clogging.
Typical applications for Mini sensors
- Measurement campaigns in channel networks
- Small WWTPs: intake and discharge
- Industrial wastewater networks
- Particularly suitable for channels featuring low flow levels
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Flow Velocity Sensor, Type CSM |
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Measurement principle |
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Protection | IP 68 |
Ex-Approval | II 2 G Ex ib IIB T4 Gb |
Operating temperature | Wedge sensor without hydrostatic level measurement
Wedge sensor without hydrostatic level measurement
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Storage temperature | −30 °C to +70 °C |
Operating pressure | max. 4 bar (combi sensor with pressure cell max. 1 bar) |
Cable lengths |
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Outside cable diameter |
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Sensor connection |
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Sensor types |
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Construction | Wedge sensor for installation on the channel bottom |
Installation Options |
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Medium-contacting materials | Polyurethane, stainless steel 1.4571, PVDF, PA Pressure compensationelement: POM-C, PMMA, PA, stainless steel 1.4571 (CSM-D only) |
Flow velocity measurement |
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Measurement range | −100 cm/s to +600 cm/s |
Quantity of scan layers recorded and computed | max. 32 |
Measurement uncertainty |
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Zero point drift | absolutely stable zero point |
Beam angle | ±5 degrees |
Level measurement – Pressure |
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Measurement range | 0 to 500 cm |
Zero point drift | max. 0.75 % of final value (0 – 50 °C) |
Measurement uncertainty | standing medium: +/− 0.5 of final value (within a range of 0.05 – 3.5 m) |
Temperature measurement |
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Measurement range | −20 °C to +60 °C |
Measurement uncertainty | ±0.5 K |
Specifications subject to change.
Specifications subject to change.