Flow Sensors

OFR Radar sensor

Part No. OFR-

OFR Radar – contactless flow measurement

Suitable for applications featuring high velocities and low levels.

  • Contactless flow velocity measurement with radar technology
  • Installation without interrupting processes
  • Ex-Approval zone 1 optional
  • Determination of surface velocity
  • Low maintenance through contactless radar sensor
  • Easy installation and operation
  • For use in aggressive / abrasive media
  • For measurement places with high pollution loads and sedimentation
  • For shooting discharge and low flow level
  • Improved accuracy in combination with bottom-mounted ultrasonic velocity sensors

By developing the OFR radar sensor in combination with our previous product range, we are capable of providing the best possible measurement solution to detect any kind of flow in each application.

Whether for measurement places with the highest accuracy requirements or for applications with difficult media, we provide easy-to-install measurement systems that achieve optimum results.

The unique combination of radar measurement and ultrasonic measurement provides previously unprecedented accuracy, covering the entire measurement range.

 

Typical Applications

  • Measuring points with high dirt load and sedimentation
  • Measuring points with bed load
  • If it is not possible to install sensors in the channel
  • Shooting discharge at low flow levels
  • Measuring points with high measurement dynamics
  • Applications with risk of sedimentation
Technical Data
Common
Measurement principle

Radar Doppler, ISM-Band

Measurement frequency

24 GHz

Measurement range

0.15…15 m/s

Measurement Distance

0.3…10 m

Measurement uncertainty

Flow Velocity (vaverage) ±5 % * of measurement value

Storage temperature

-30 °C…+70 °C

Cable lengths

10 / 15 / 20 / 30 / 50 / 70 / 100 m

Cable types

LiYC11Y 2x1,5 +1x2x0,34 mm²

Outside cable diameter

8.5 mm

Ex Approvals (option) / other Approvals (option)
  • ATEX: TÜV 16 ATEX 185271X 
  • IECEx: 16.0034X 
  • Ex II 2G Ex ib IIB T4 Gb
Protection

IP 68, fully encapsulated

Enclosure material:

POM high-performance composite

Operating temperature
  • -30 °C…+70 °C
  • -20 °C…+60 °C in Ex-Zone 1

Specifications subject to change.

Downloads

Data Sheet | NivuFlow 550 / NivuFlow 7550

Technical and Installation Instruction for OFR Radar sensor

Non contact flow velocity measurement on the water surface.

Mounting Instruction | Manhole Holder in conjunction with OFR Radar Sensor and NFM (Rev. 00)

EC Declaration of Conformity | Surface Radar OFR-F00-xxx / OFR-G00-xxx

EU Declaration of Conformity | "EX" Surface Radar Typ OFR-EV0-xxx / EVG-xxx

EU Declaration of Conformity | Surface Radar OFR-G00 / OFR-H00

EU-Type Examination Certificate | Surface radar sensors type OFR-EV0 and EVG

IECEx Certificate of Conformity | Radar sensor type OFR-Ev0 and OFR-EVG

System Products

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