Precision Control Systems

Fuel Quantity Test Set

Fuel Quantity Test Set

The DE8491EX is a microprocessor controlled test set capable of taking probe measurements and simulating fuel state conditions. The automated test procedure reduces test time and helps eliminate operator error. Test scripts are written in line with existing maintenance procedures and users can download the test data for diagnostic purposes and trend analysis.

The test set is operated via simple menu-driven software and platform-specific configuration files. Connection to the aircraft is made via application-specific cables to a multi-pin connector, allowing for multiple probes to be measured over a single connection.

Key information

  • One test set for multiple aircraft types
  • Measures voltage, resistance, continuity and distance to fault
  • Tests thermistor level sensors
  • Measures fuel, LOx and water systems
  • Fully automated test sequence with calculated pass / fail limits
  • User configurable test operation
  • Results can be downloaded for trend analysis
  • ATEX 95 (94/9/EC) group 2, category 3 approved


The following aircraft types have already been integrated and custom software and harness interconnects developed:

  • Airbus Helicopters Puma
  • BAE Systems Hawk & T-45 Goshawk, Harrier
  • Boeing AH64 Apache, CH47 Chinook, E-3 Sentry, F-18, P-8
  • Embraer Tucano
  • Eurofighter Typhoon
  • Leonardo¬† AW101, AW159, C27J, MB339, M346
  • Lockheed C-130, P-3 Orion / CP140 Aurora
  • Panavia Tornado
  • Sepecat Jaguar
  • Sikorsky H60 Sea Hawk, H53, H46
  • Cobra H-1, AH-1W, HH-N, UH-1N
  • Greyhound C-2
  • Hawkeye E-2C
  • Prowler EA-6B