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FM-1D/K Frequency Converter


The FM-1D/K is a µP-controlled, frequency-to-current converter and flow rate indicator. It converts input pulses to an analog current signal proportional to the instantaneous flow rate. Equipped with a numerical display on the front, it converts registered pulses into:

  • Consumption reading (pulse totalizer)
  • Flow rate indication
  • Output pulses with different pulse value and
  • Normalized output current

You can also use the FM-1D/K for on-site display of flow rate and current counter reading, as well as remote transfer for apportioning, process automation, display of flow rate and current counter reading.

Benefits to you

  • Accommodates a wide range of pulse inputs
  • Identifies reverse flow
  • Indicates local instantaneous flow rate, consumption reading and configuration data
  • Retains data by non-volatile memory, in case of power failure
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  • User-friendly setup
  • Wall-mounted or clipped onto a top hat rail acc. to EN 50022
  • Pulse output through relay
  • Current output 0 or 4 … 20 mA
  • Test mode
  • Setup of input and output pulse values


  • Pulse Input
    • different type like Opto OD
    • scalable
    • detects direction information*
  • Current Output
    • 0…20 or 4…20 mA
    • scalable
  • Pulse  Output
    • scalable
  • Display
    • 4-digit, 7-segment LED, 10 mm digit height instantaneous flow rate
    • consumption reading
  • Programming data
    • input type
    • flow rate range
    • input pulse values
    • output pulse values
    • standardised output current range
    • damping factor

*depending on pulse unit

For more information about this product, please download the data sheet.

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