Flow Meter

NivuFlow Mobile 550

Part No. NFM-0550

Contactless flow metering for long-term measuring in part filled pipes and channels


NivuFlow Mobile 550 permits contactless flow metering in a variety of different situations. Hydraulic algorithms determine the exact flow profiles for almost all shapes.  

The modern operating concept via web browser in connection with tablet, smartphone etc. is intuitive and enables quick commissioning. Here, a quick start assistant guides through the most relevant parameter settings. While setting parameters, the remaining operation time is indicated in days.
The optional built-in modem provides automatic data transmission via e-mail, FTP or to the NIVUS WebPortal. The energy-efficient system allows for accurate scheduling of maintenance visits and very long operation times.

Your Benefits

  • Contactless mobile flow measurement
  • Permanent measurement at lack of infrastucture
  • Very easy operation
  • Quick commissioning    
  • LTE modem with worldwide coverage
  • Maintenance visits can be accurately scheduled


Typical Applications:

  • WWTP intakes
  • Irrigation channels
  • Tributaries
Technical Data
Operating time

~1 year on one battery charge* (two batteries)


*calculated value with storage cycle 60 minutes and daily data transmission. Value may vary

according to measurement spot or age of batteries

Data transmission

• Via plug-in USB stick

• Via WLAN


Data memory

Internal memory, covering a period of 1.5 years

at a measurement interval of 5 minutes

Save mode

5 sec. - 360 min, continuous, cyclic or event-based


• via ConnectorBox

• 1 x analog output 0 - 10 V

• 1 x potential-free digital output

as SPDT / bistable

• 1 x USB or readout of values via USB stick


• 1x socket for OFR-Radarsensor or

ConnectorBox for external mains adaptor or

power supply as well as:

• 2x 0/4 - 20 mA (active/passive)

• 1x 0/4 -20 mA (passive)

• 1x active digital input

• 1x level sensor socket

• 1x antenna socket


Magnetic switch, via WiFi using smartphone,

tablet, notebook…


Optional: II 2G Ex eb ib [ib] mb IIB T4 Gb

TÜV 17 ATEX 196722 X / IECEx 18.0008X


via mobile device; status LED (RGB)

Max. humidity

90 %, non-condensing

Storage temperature

- 20°C to + 70°C

Operating temperature

- 20°C to + 50°C / - 15°C to + 50°C for Ex-Zone 1


• Material: HPX high-performamce synthetic resin

• Weight: approx. 4.7 kg (without battery and hoop guards)

• Protection: IP68 closed / IP67 open

Power supply

• 2 x rechargeable batteries 12V/15 Ah, lead gel

• charger 100 - 240 V AC / 50 to 60 Hz / 50 VA

Measurement principle

Doppler Radar

Specifications subject to change.


Data Sheet Nivu Flow Mobile 550

Instruction Manual NivuFlow Mobile 550


Tender Specification NivuFlow Mobile 550

EU Declaration of Conformity | "Ex" Portable flow measurement transmitter/data logger, with internal modem for data transmission via GPRS/UMTS/LTE NivuFlow Mobile / NivuLevel Mobile

NFM0xxx GE Ex


EU Declaration of Conformity | "Ex" Portable flow measurement transmitter/data logger, standard version NivuFlow Mobile / NivuLevel Mobile

NFM0xxx0E 00     

IECEx Certificate of Conformity NivuFLow Mobile and NivuLevel Mobile


NivuFlow Mobile type NFM-0xxx x E

NivuLevel Mobile tyüe NFM-0050 x E

EU-Type Examination Certificate NivuFlow Mobile and NivuLevel Mobile

Fpr the product:

Portable Measuring Transformer

NivuFlow Mobile Typ NFM-0xxx x E and

NivuLevel Mobile Typ NFM-0050 x E

IECEx Certificate of Conformity NivuFlow Mobile

EU-Type Examination Certificate "Portable Measuring Transformer NivuFlow Mobile Type NFM-0xxx x E"

EU Declaration of Conformity | Portable flow measurement transmitter/data logger, standard version NivuFlow Mobile / NivuLevel Mobile

NFM0xxx00 00

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