Flow Sensors

CSM Correlation Pipe SensorNew

Part No. CSM-V100 R

for up to 16 bar as well as temporary flow measurements

Ultrasonic sensors for flow measurement with very high accuracy in slight to heavily polluted media. For pipe applications

  • For high-accurate flow measurement of ultrasonic cross correlation method
  • Interference-free connection over long distances through digital signal transmission
  • Cables can be extended without any problems using standard cables
  • Absolutely stable zero point and drift-free
  • Measurement in heavily polluted and abrasive media
  • Easy installation without additional constructions and perfectly matched mounting accessories


The CSM pipe velocity sensors are suitable for continuous measurement of slight to heavily polluted media.
The pipe-shaped sensors are designed for installation in pipes from the outside using a nozzle. Combined with transmitter types such as NivuFlow 750 and an external level measurement the result is a complete flow measurement system.

Typical applications for POA pipe sensors

  • For temporary flow measurements 
  • Validation of existing measurements
  • Wastewater treatment plants: intake, discharge, activated sludge tank intakes, return sludge, recirculation, surplus sludge, digester discharge and flocculant dosage
  • Direct discharge control, infiltration (extraneous water) or leakage detection
  • Industrial wastewater networks
  • and many more
Measurement principle Ultrasonic Cross Correlation with digital pattern detection (flow velocity)
Measurement frequency 1 MHz
Protection IP68
Ex-Approval optional
II 2G Ex ib IIB T4 Gb (ATEX)
Ex ib IIB T4 Gb (IEC EX)
Operating temperature -40 °C up to +80 °C
-40 °C up to +80 °C when used in Ex Zone 1
Storage temperature -30 °C up to +70 °C
max. operating pressure 16 bar
Cable lengths 7 m + 15 m
Measurement range -100 cm/s up to +600 cm/s
Number of scan layers max. 16
Zero point drift absolutely stable zero point
20 and 45°
Measurement uncertainty for 0,05≤|V|≤0,5 m/s: E_v=0.5/|V| [%]
for|V|>0,5 m/s: E_v=1 %

Specifications subject to change.

Technical Instructions Correlation Sensors

Technical instructions for correlation sensors and external electronic box

Installation Instruction for Correlation and Doppler Sensors

Installation instruction for save installation 

EU-Type Examination Certificate Sensor Family Mini and Transit Time Sensors

IECEx Certificate of Conformity Sensor Family Mini and Transit Time Sensors

Declaration of Conformity " Ultrasonic sensors CSM / SP / DSM / OCL-LM

Declaration of Conformity "Ex" ultrasonic sensors CSM / CSP / DSM / OCL-LM

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