TM 55-1520-240-23-7
8-2
TEST POWER TURBINE INLET TEMPERATURE (PTIT) INDICATOR
(Continued)
8-2
OPEN THERMOCOUPLE TEST
20.
Adjust tester (2) to 900ºC. Check indicator (1).
Indicator shall read 890ºC to 910ºC. Record
indicator reading.
21.
Disconnect tester (2) chromel lead (4). Check
indicator (1). Pointer of indicator shall fall to full
down scale stop.
22.
Reconnect tester (2) chromel lead (4). Check
indicator (1). Indicator shall indicate reading
recorded in step 20.
23.
Repeat steps 21 and 22, disconnect tester
Alumel lead (5).
24.
Turn off power to test setup.
25.
Disconnect indicator (1) from test setup.
FOLLOW-ON MAINTENANCE:
None
END OF TASK
8-19