2548H INSTRUCTION MANUAL
56-101-00420 Rev. C
Ch. 1
Nov
/
07
/
14
Page 5 of 33
CHAPTER 1: DESCRIPTION
1. PURPOSE
The Barfield 2548H Fuel Quantity Test Set (P/N 101-00420) is specifically designed to
satisfy the need to service guarded, capacitance-type aircraft fuel and oil quantity-measuring
systems. Accuracy and reliability have been optimized together with portability and
convenience. The accuracy of the Test Set (T/S) ensures that manufacturer’s measurement
and calibration requirements are met. The potentials and currents the T/S introduces are
limited to meet all safety precautions. The Test Set’s circuitry components also provide
current limiting in case of a catastrophic failure. Three measurements and two capacitance
simulator functions are provided through the function selector switch.
The standard lead package enclosed with the 2548H Test Set provides all accessories
necessary (except adapter cables) to adapt the adapter cable, aircraft or component to the
Test Set. Please refer to the Barfield Ground Test Equipment catalog for further
information.
Figure 4 2548H FUEL QUANTITY TEST SET
A. Adapter Cables
Each individual Aircraft Fuel Quantity System requires its own particular adapter cable(s)
and the specific instructions. Adapter Cable configurations and interfaces vary widely to
accommodate the variety of fuel systems. There is an extensive selection of adapter
cables manufactured by Barfield Inc. to be used with the 2548H Fuel Quantity Test Set.
Please contact the Barfield Ground Support Test Equipment Sales department or visit
the Barfield website at
http://www.barfieldinc.com/ground.html
for further information.
