The sensor for filter monitoring is installed on the suction side as close as possible to the pump. The pressure measured allows conclusions to be drawn about the condition of the filter element and the suction line in general. This allows detecting pending maintenance or cleaning of the filter as well as a closed supply line. A reliable liquid supply of the micro annular gear pumps, especially in production plants (24/7 operation) is thus guaranteed.

The implementation of the sensor is very easy. It can be attached directly to T-filters or integrated into the suction line by means of a separate mounting block. Later upgrades are possible.

There are several sensor versions available. In addition to the simple pressure sensor with analog output, pressure switches with digital display, optical LED displays and/or configurable output signals are available. Pressure switches can give feedback when previously defined pressure thresholds are reached. The pressure switches can be configured to meet specific customer requirements via IO-Link interface.


  • Simultaneous monitoring of filter and system pressure on the suction side
  • Various pressure sensors can be attached to T-filters or integrated into the suction line by means of a mounting block
  • Can be used with all filtertypes
  • Customized combination of filter and pressure sensor possible
  • Switching points configurable via IO-Link *
  • LED indicator lamps for the switching points *
  • IP 65


Mounting plate for filter with filter monitoring

through holes for M6

Mounting bracket for mounting block with filter monitoring

slotted holes for M5

Dimensions adaption T-filter

Dimensions manifold adapter (1)

Dimensions manifold adapter (2)

Caractéristiques techniques

  • Measuring range
    -1 … 1.5 bar [-14.5 … 21.8 psi]
  • Accuracy
    ± 12.5 mbar [± 0.18 psi] (± 0.5 % measuring range)
  • Overload safety
    5 bar [72.52 psi] (2 times measuring range)
  • Plage de température du fluide
    -20 … +85 °C [-4 … 185 °F] (with pressure indicator)
    -40 … +125 °C [-40 … 257 °F] (without pressure indicator)
  • Plage de viscosité
    0.5 - 10,000 mPas
  • Fluid connection mounting block
    1/8" NPT, 3/8" NPT, 1/4"-28 UNF *
  • Composants en contact avec le fluide
    1.4404, PEEK
  • Switching output
    2 switching points PNP/NPN *
  • Analog signal
    4 ... 20 mA / 0 ... 10 V DC (3-wire) *
  • Raccordement de l'alimentation
    M12 circular connector, 4-/5-pin socket *
  • Alimentation
    15 - 35 V DC
  • Remarque
    * depending on respective configuration
  • Generell
    Même si des paramètres remplissent de façon individuelle les plages de performance indiquées, certaines combinaisons de paramètres ne sont néanmoins pas réalisables. Les paramètres peuvent aller en deçà ou au-delà des performances indiquées dans des conditions optimales. Pour une application particulière, veuillez prendre contact avec HNP Mikrosysteme. Les performances du produit peuvent varier. Sous réserve de modifications techniques.
    Ce document est susceptible d'être modifié sans préavis.

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