Overfill Dummy Probes


The DP300 Series is an accurate and reliable electronic dummy probe for 2-wire optic and thermistor overfill protection systems.

Dummy probes are used when a tanker has fewer compartments than the number of channels on the gantry overfill monitor. The DP30x provides a simulation signal to unused channels in order to obtain a permissive signal from the gantry monitor.

The DP300 Series can simulate up to 7 compartments and is available in both 5 channel and 7 channel models.

Note: Australia uses DP305 only.


Features & Benefits
  • Designed in compliance with EN13922.
  • Available with five channels (DP305) or seven channels (DP307).
  • Power supply is intrinsically safe from industry standard 2 wire gantry monitor via gantry plug when truck is connected.
  • IECEx, UKEX and ATEX certification for installation in zone 1 hazardous areas.
  • Can be mounted in truck plug or junction box.
  • IP67 rated.
  • Compatible with 2 wire optic and thermistor overfill systems.
  • Can be used as replacement in other industry standard overfill systems.


Recommended products for replacement

    Technical Information


    • IECEx Certificate: IECEx ITA 13.0024X
      • Marking: Ex ia IIA T3 IP67


    • ATEX Certificate: ERO21ATEX0018X
      • Marking: CE 2813 II 2 G Ex ia IIA T3 Gb


    • UKEX Certificate: EMA21IKEX0075X
      • Marking: UKCA 0518 II 2 G Ex ia [ia Ga] IIA T3 Gb



    Temperature: Ta= -25°C to 60°C.

    Parameters: Ui = 30V, Pi = 9W, Ii = 500mA, Ci = 0μF, Li = OmH.

    Can be installed in zone 1 hazardous areas.

    Mounts inside Liquip TP100 series truck plug or equivalent truck plugs.

    -Plastic Body.
    -Encapsulated electronic circuit board potted with epoxy.
    TFE, 20 AWG Wire.

    Ordering Information

    DP305: Dummy Probe with 5 Outputs.

    DP307: Dummy Probe with 7 Outputs.

    Associated Equipment

    TP100 Series: Overfill Truck Plug.

    LDP202: 2 wire Aluminium Overfill Sensor.

    RM140 Series: Overfill Gantry Monitor.

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    DP305 Dummy Probe with 5 Outputs.
    DP307 Dummy Probe with 7 Outputs.

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