Flow Sensors

NIS Wedge Sensor

Part No. NIS-V280

for large pipes and channels

Suitable for flow measurement in part filled and full large pipelines and channels using up to 8 measurement paths.

Ultrasonic transit time sensor for connection to NivuFlow 650 and NivuFlow 600
Flow measurement with highest accuracy
Measurement in clear to slightly polluted water
Measurement in part filled and full geometries
Resistant sensor material for use in various media
Up to 100 m of cable length between sensor and transmitter or adapter box

NIS wedge sensors are part of a fixed measurement system for continuous flow measurement and storage of the recorded measurement data. They can be used for clean to slightly polluted media.
NIS wedge sensors are used for flow measurement in full pipes featuring various dimensions.

Readings are detected based on the ultrasonic transit time principle which allows versatile use with high accurate measurement results. Thanks to perfectly matched mounting material the system is ideal for retrofitting of large geometries such as cooling water channels, pipes and surface waters or for replacement of existing flow measurement systems.

Typical NIS wedge sensor applications

Fixed measurements in full pipes in hydropower plants, pump stations and similar
Irrigation systems
Inlets and outlets conducting cooling water or circulation
WWTP outlets
Dirty water pipelines
Industrial flow measurements, process water
Retrofitting and Replacement of existing flow measurement system
and many more

Common
Measurement principle	Ultrasonic transit time
Measurement range	-15 m/s to +15 m/s
Measurement uncertainty	Flow velocity (vaverage) within path ± 0.1 % of measurement value
Measurement frequency	0.9 to 1.2 MHz
Protection	IP 68
Operating temperature	-20 °C to +50 °C
Storage temperature	-30 °C to +70 °C
Operating pressure	max. 4 bar
Cable lengths	10/15/20/30/50/100 m; extension option: sensors can be connected to extension modules NFE, cable length between NFE and transmitter max. 200 m
Sensor connection	Continuous pre-configured cable
Medium-contacting materials	stainless steel 1.4571, CFK (Carbon)
Zero point drift	Absolutely stable zero point

Specifications subject to change.

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