Flow Sensors

NIC Clamp-On Sensor

Part No. NIC-CO01

For contactless flow measurement in pipes

Clamp-on ultrasonic flow meter is ideal for retrofitting system at flow measurement places as well as for monitoring of water networks. Unaffected by pressure and temperature.

  • Ultrasonic transit time sensor for connection to NivuFlow 600
  • Clamp-on system. No contact to measurement medium
  • 2-path measurement
  • Measurement in clear and polluted water
  • Ideal for retrofitting or replacement in the drinking water area
  • Up to 100 m of cable length between sensor and transmitter or adapter box


Clamp-on ultrasonic flow meter sensors are part of a measurement system for continuous flow measurement and storage of the recorded measurement data. They can be used for clean to polluted media.

The sensors of this non contact flow meter are used for flow measurement in full pipes featuring various dimensions.

Thanks to the clamp-on design there is no contact between sensor and the measurement medium. The sensors therefore are particularly suitable for use in the drinking water area. Measurement tasks can be carried out very easy within very short time without any greater effort. This applies for high pressures as well as for aggressive and abrasive media.

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 or as replacement system for existing flow measurements.

Typical clamp-on sensor applications


  • Fixed measurements in full pipes in hydropower plants, pump stations and similar
  • Monitoring of drinking water plants and networks
  • 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



Measurement principle Ultrasonic transit time
Pipe diameter 50 – 6000 mm (DN 50 – DN 6000)
1 MHz Variante: DN50 – DN2500
500 KHz Variante: DN 300 – DN6000
Measurement uncertainty Flow velocity (v average) within path ± 0.1 % of measurement value
Offset Velocity < ± 5 mm/s
Measurement frequency 1 MHz and 500 kHz
Measurement range - 15 m/s to + 15 m/s
Protection IP 68
Storage temperature -40 °C to + 80 °C (non-condensing)
Operating temperature Ex-Variante and Standard - 40°C ≤ TA ≤ 80°C
Permissible medium temperature 0°C to +80°C
Cable lengths 7/10/15/20/30/50 m
Sensor connection Continuous pre-configured cable
Zero point drift Absolutely stable zero point
Medium-contacting materials PEEK and stainless steel 1.4301

Specifications subject to change.

Technical Description "Transit Time Sensors Rev. 05"

EC Type Examination Certificate "Ultrasonic Clamp-On Sensors"

Mounting Instruction Rev.04 "Transit Time Sensors"

Declaration of Conformity "Passive Ex Separation Interface pXT0"

Declaration of conformity "Ex Ultrasonic clamp on sensors"

Declaration of Conformity Ultrasonic transit time sensors

Declaration of Conformity "Ex" Ultrasonic transit time sensors

"Ex" Ultrasonic transit time sensors


Haven't found the appropriate product?

You haven’t found the right product? Then use our application configurator – it will get you to the right product step by step.

Also for your individual measurement spot we support you gladly. Please fill in our questionnaire.

Product Consultation

You want to have best information about our products? Our experts will gladly develop together with you the best system solution for your application.


You have questions about your NIVUS products in use? Our service hotline will readily support you.

We are glad to have you here! For any question regarding water or digitisation we are happy to answer you call or your email message.
Im Täle 2
75031 Eppingen