Flow Meter

NivuFlow 550New

Part No. NF5-5

Radar Flow Meter

Contactless flow measurement for open channels and part filled pipes

  • Low maintenance through contactless radar sensor
  • Easy installation and operation
  • Ideal for use with all liquids, even aggressive / abrasive media
  • Modular flexible installation
  • IoT-ready with global 4G connectivity for highest availability and digital services
  • Energy-saving cycle operation for self-sufficient systems


Contactless Radar Flow Metering

The contactless low-maintenance radar sensor provides reliable operation even at very high discharge velocities with low flow levels. Dynamic hydraulic models for various channel shapes based on varying filling levels enable accurate detection of the real flow rate.

Introducing the NivuFlow 7550 we provide a transmitter for Hybrid flow measurement using radar and ultrasonic technology.


Easy Installation and Handling

Due to DIN rail mounting options the compact transmitter saves space and can be installed easily in control cabinets. Moreover the NivuFlow 550 is available with a special protected field enclosure for use under harsh ambient conditions. The large graphic display permits quick and easy commissioning of the flow meter system.

Due to the modular construction of our radar flow meter system we can provide the appropriate solution for each application

NivuFlow 550 provides extended diagnostic options and facilitates in-depth analysis of running processes on site. The transmitter software is in line with current requirements. Future-proof protocols and versatile communication and integration options open many ways for operators to integrate the devices into higher systems such as SCADA or process control systems.


Typcal applications for NivuFlow 550

  • Measurement places with high pollutant load and sedimentation
  • Measurement places featuring bed load / debris
  • Measurement places with installation restrictions in the channel
  • Shooting discharge at low flow levels and high velocities
Technical Data
Measurement uncertainty

flow (Q): ± 5% typical;

± 2% under reference conditions

Communication/data transmission

Modbus, HART®

Data memory

1,0 GB internal memory

readout on faceplate via USB stick


up to 4 x 0/4 – 20 mA, up to 5 x relays (SPDT)


up to 7 x 4 - 20 mA, up to 4 x RS 485


plug with cage clamp terminals

Range of operation

rotary pushbutton, 2 function keys,

menus in English, French and other languages


240 x 320 pixel, 65536 colours

Max. humidity

80%, non-condensing

Operating temperature

-20°C to +70°C


IP 20, IP 68 with optional field enclosure


Aluminium, plastic (transmitter enclosure)

Plastic (field enclosure)

Power consumption

typical 14 VA

Power supply

100 to 240 V AC, +10 % /-15 %,

47 to 63 Hz or. 9-36 V DC

Measurement principle

Radardoppler flow velocity detection

Specifications subject to change.


Instruction Manual NivuFlow 550

Contactless flow measurement for radar sensors.

Data Sheet NivuFlow 550/NivuFlow 7550

Declaration of Conformity Permanent Flow Measurement Transmitter NivuFlow 550

Technical Instructions "NIVUS Modbus TCP/RTU"


Tender Specification "NivuFlow 550"

Declaration of Conformity "Permanent flow measurement transmitter with internal modem for remote data transmission NivuFlow 5xx"

NivuFlow 5-..

System Products
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