Section Il. MEASURING TANK UNIT PROBE CAPACITANCE

TM 55-4920-325-14&P

Figure 2-2. Typical AC Power Connections.

Section Il. MEASURING TANK UNIT PROBE CAPACITANCE

2-5. Scope.

This section contains information and in-

a. Check that the grounding lead is properly

structions for measuring tank unit probe capac-

connected (see 2-4b).

itance on aircraft using liquid fuel gaging sys-

b. Check that power cable is connected from

tems.

test set to 115 Volts, 400 Hz, single-phase power

2-6. Operating Procedure.

source (see 2-4c through e).

Proceed as follows to measure tank probe

c. Connect test set to aircraft liquid quantity

fuel gage system as shown in figure 2-3.

WARNING

Do not operate ungrounded test set.

2-9