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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 provide 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
comes in both 5 channel and 7 channel models..


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 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.


  • IECEx Certificate: IECEx ITA 13.0024X
    • Marking: Ex ia IIA T3 IP67
    • Temperature: Ta= -25°C to 60°C
    • Parameters: Ui = 30V, Pi = 9W, Ii = 500mA, Ci = 0μF, Li = OmH
  • ATEX Certificate: TUV 14 ATEX 7536X
    • Marking: 0518 II 2 G Ex ia 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. Mount inside Liquip TP series truck plug
or equivalent truck plugs.


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

DP305: Dummy Probe with 5 Outputs

DP307: Dummy Probe with 7 Outputs


TP100 Series: Overfill Truck Plug

LDP202: 2 wire Aluminium Overfill Sensor.

RM140: Overfill Gantry Monitor.


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