variable-area flow meter / for gas / for liquids / metal tube
L series Riels Instruments



  • Technology:


  • Fluid:

    for gas, for liquids

  • Other characteristics:

    metal tube, flange, stainless steel, ATEX

  • Process pressure:

    150 bar (2,175.57 psi)

  • Process temperature:

    150 °C (302 °F)

  • Volumetric flow rate:

    Max.: 160 l/h (42.3 us gal/h)

    Min.: 0 l/h (0 us gal/h)


Liquid flow range from 0.1÷160 l/h
Flow range for gaseous from 1.6÷5000 Nl/h
Output signal 1-2 bistable contacts NAMUR;Analog 4÷20mA HART
Process connection threaded axial or team ½" - ¼" Gas - Flange DN15 or DN25
Maximum temperature 150°C - Maximum pressure 150 bar
On request ATEX version

The new L-Series Variable Area Flowmeter Riels are indicators of local capacity, in stainless steel with transmission of reading through magnetic coupling.They are suitable for low flow of gases and liquids at high pressures and temperatures.

In addition to the basic version, (only visual indicator) these flowmeters are available with electronic microprocessor technology with two wire output signal 4 to 20 mA, intrinsically safe version EExi.

Devoid of seals, they can be equipped with tap, of flow regulator and alarms of minimum and maximum flow.
The connections can be threaded or flanged, axial or angle on request.