Features and Benefits

  • Including temperature measurement
  • RS 485 interface, Modbus-RTU as a standard
  • Integrated display for m3/h and m3
  • Usable from 1/2" to DN 1000
  • Easy installation under pressure
  • 4 - 20 mA analog output for m3 respectively m3/h
  • Pulse output for m3 or M-Bus (optional)
  • Inner diameter adjustable via keypad
  • Total counter resetable
  • Adjustable via display keys

  • Reference conditions
  • °C and mbar
  • 4 - 20 mA scale
  • Pulse weight
  • Option

    Bi-directional measurement, blue or green arrows in the display indicate the flow direction. A meter reading is available for each flow direction.

    Even under pressure, the flow sensor Flow Check Universal is mounted by means of a standard 1/2“ ball valve. During mounting and dismounting the circlip ring avoids uncontrolled ejection of the probe which may be caused by the operating pressure. For mounting into different pipe diameters, the Flow Check Universal is available in the following probe lengths: 120, 160, 220, 300, 400 mm. So the flow sensors are being mounted into existing pipelines with inner diameters of 1/2“ upwards. The exact positioning of the sensor in the middle of the pipe is by means of the engraved depth scale. The maximum mounting depth corresponds with the respective probe length.

    Technical data Flow Check Universal


    m³/h, l/min (1000 mbar, 20 °C) in case of compressed air resp. Nm³/h, Nl/min (1013 mbar, 0 °C) in case of gases

    Units adjustable via keys at display

    m³/h, m³/min, l/min, l/s, ft/min, cfm, m/s, kg/h, kg/min, g/s, lb/min, lb/h

    Adjustable via keypad

    Diameter for volume flow calculation, counter resettable


    Thermal mass flow sensor

    Measuring medium

    Air, gases

    Gas types are adjustable over PMH service software or PMH data logger

    Air, nitrogen, argon, helium, CO2, oxygen, vacuum

    Measure range

    See table page 75


    (m.v.: of meas. value) (f.s.: of full scale)

    ± 1.5 % of m.v. ± 0.3 % of f.s. on request

    ± 1.0 % of m.v. ± 0.3 % of f.s.

    Operating temperature

    -30-110 °C probe tube

    -30-80 °C housing

    Operating pressure

    -1-50 bar

    Digital output

    RS 485 interface (Modbus-RTU), Optional: Ethernet-Interface PoE), M-Bus

    Analog output

    4-20 mA for m³/h e. g. l/min;

    Pulse output

    1 Pulse per m³ or per liter galvanically isolated. Pulse value can be set on the display. Alternatively, the pulse output can be used as an alarm relay


    18-36 VDC, 5 W


    < 500 Ω


    Polycarbonate (IP 65)

    Probe tube

    Stainless steel, 1.4301 Mounting length 220 mm, Ø 10 mm

    Mounting thread

    G 1/2“

    Ø Casing

    65 mm

    Mounting position