Flow Meter

NivuFlow 550New

Part No. NF5-5

Radar Flow Meter

Contactless flow measurement for open channels and part filled pipes

To counseling Wish list

  • Low maintenance through contactless radar sensor
  • Easy installation and operation
  • Ideal for use with all liquids, even aggressive / abrasive media
  • Modular flexible installation

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
Measurement principle Radardoppler flow velocity detection
Power supply 100 to 240 V AC, +10 % /-15 %,
47 to 63 Hz or. 9-36 V DC
Power consumption typical 14 VA
Enclosure Aluminium, plastic (transmitter enclosure)
Plastic (field enclosure)
Protection IP 20, IP 68 with optional field enclosure
Operating temperature -20°C to +70°C
Max. humidity 80%, non-condensing
Display 240 x 320 pixel, 65536 colours
Range of operation rotary pushbutton, 2 function keys,
menus in English, French and other languages
Connection plug with cage clamp terminals
Inputs up to 2 x 4 - 20 mA, up to 2 x RS 485
Outputs up to 2 x 0/4 – 20 mA, up to 2 x Relais (SPDT)
Data memory 1,0 GB internal memory
readout on faceplate via USB stick
Communication/data transmission Modbus, HART®
Measurement uncertainty flow (Q): ± 5% typical;
± 2% under reference conditions

Specifications subject to change.

non-contact flow measurement OFR radar compact housing

OFR Radar sensor

OFR Radar – contactless flow measurement
Suitable for applications featuring high velocities and low levels....
i-Series intelligent sensors for level measurement

i-Series Sensors

Intelligent sensors for level measurement
Ultrasonic sensors with integrated transmitter for measurement of distance, level, empty space or vo...lumes. Suitable for harsh ambient conditions.
iXT Ex separator module

Ex Separator Module iXT

for NivuFlow Transmitters
Intelligent Ex separation interface for Ex-safe connection of correlation sensors...
Modular mounting accessories for transmitter assembly


for installation and protection of transmitters
The mounting accessories allow the quick and easy installation of transmitters. The solid high-quali...ty accessories made of stainless steel 1.4301 are suitable for indoor and outdoor installation. Transmitters can be simply installed in close vicinity to measurement places. Weatherproof covers protect the transmitters from influences due to weathering in outdoor areas. All accessories are supplied including the according fastening materials.
Overvoltage protection for instruments and sensors

Overvoltage Protection Unit

efficient protection of instruments and sensors
DataPro, SonicPro and EnerPro surge arrestors – highly stressable and particularly adjusted to senso...rs and transmitters. Maximum operational safety at small dimensions.
BSG overvoltage protection enclosure

Overvoltage protection enclosure

for lightning or surge arrestors
BSG 12, 32, 42 and BSG 20 Ex - for DataPro, SonicPro, EnerPro and IsoPro surge arrestors...


Measurement data processing in the wastewater industry
Software with adjusted functions for the wastewater industry. Functions: documentation of measuremen...t places, graphs and table views, creation of statistics/reports etc.

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