Model Number: Barfield DC400A

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Digital DC Fuel Quantity Test Set

Aero Express is an Authorized Distributor for the Barfield DC400A Test Set.

To view click here:  Standard Warranty Policy  DC400A Data Sheet  Barfield DC400 Operation Manual 

AC Fuel Qty Comparison Chart  AC Fuel Qty Specifications Page 

Fuel Qty Adapter Cables  Fuel Qty Adapter Cables by Aircraft

Aero Express will buy, sell and trade the DC400A depending on your needs.  The compact and lightweight DC400A is a complete fuel quantity system test set for use on aircraft that have probes with integral diode rectification, commonly called “DC” fuel quantity systems.


  • Completely self-contained DC capacitance fuel quantity test system
  • Capability to bench check aircraft fuel quantity system components
  • Capacitance simulation in the range of 0 to 400 pF with infinite resolution
  • 4 1/2 –digit liquid crystal display
  • Digital readout of quantity system output in (volts, lbs, ratio, etc.)
  • Interchangeable aircraft interface modules
  • Powered from common AA batteries
  • Provisions for bench-testing of system components
  • State-of-the-art low battery drain circuitry
  • Maximum ease of operation and maintenance

1-Year Factory Barfield Warranty on all new products.


Express Calibration is an Authorized ISO-17025 Calibration and Repair shop for the Barfield DC400A.  Visit for full capabilities.

All units will be sold with a current calibration certificate. If factory new, a manufacturer’s Certificate of Conformance (C of C) will be provided.

Since its inception, Express Calibration Services has supported Aero Express’ endeavors in providing test equipment support services.

They perform calibrations for General Aviation, Corporate Aviation, OEMs, FAA Repair Stations, Military, as well as Regional and Air Transport Airlines. Express Calibration Services offers their services when you have a requirement for calibration or repair of your test equipment.