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On-Board Aircraft Processing Probe


Liquid Measurement System’s new fuel gauging probe with on-board processing combines probe and signal conditioner in one piece of hardware with no moving parts.

  • Reduces development time
  • Works with a variety of fuel tank configurations
  • Streamlines mounting and installation


  • Carbon Fiber Capacitance Probe
  • Up to 3 Discrete Open/GND Inputs
    • IBIT Initiate
    • Set High/Low Level


  • ARINC 429, CANBUS, or Analog Signal
  • Up to 3 Discrete Open/GND Outputs
    • Low/High Level
    • Failure Warning
    • IBIT in Progress

Built-In Test

  • Self-Test Capability (Startup/Initiated/Continuous)


  • Accuracy to JSSG-2009A Class 2 and AS405D
  • Software DO-178C DAL B
    • Outputs/Tank tables customizable through PDIF
  • Safety Objectives from AC 25.981-1C
  • Environmental conditions from MIL-STD-810
  • Electromagnetic Interference compatible with MIL-STD-461
  • DO-160G, Section 22 – Lightning Level 3
  • MIL-STD-704F 28VDC Input power


  • D38999/ 13 Pin B Size Connector
  • Flange 5” Diameter x 2” Tall (12.7cm x 5cm)
  • Mounts through a hole 2” diameter in top or bottom of tank
  • Weight: < 3 pounds (1361 grams)
  • Aluminum with corrosion protection

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