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Logic Controller



System for automatic calculation of corrected differential pressure measurement in refuelling applications. From differential pressure input values and corresponding flow rate signals, the DPGUARD® determines the optimum differential pressure curve of the filtration equipment and outputs the corrected differential pressure values of the filtration system depending on the current operating parameters.

DPGUARD® is available in two variants: DPGUARD® gold, with display and housing and DPGUARD® silver, without display and housing.


  • Self-learning system regardless of the filter type or vessel type
  • IP65 protective housing for mounting in safe zones
  • Built-in data storage (only forDPGUARD® gold)
  • Data transfer via Ethernet, USB, LAN/WLAN and GSM

Technical Data

  • Power supply: 24 VDC ± 10%
  • Protection class: IP65
  • Connections: 8 digital inputs, 4 digital outputs, 4 AI, 3 relay outputs
  • Communication protocol: Modbus TCP
  • Operating temperature range: -30 °C to + 60° C (-22 °F to 140 °F)