TB 9-4920-452-35
7. Equipment Setup
NOTE
HIGH VOLTAGE is used or exposed during the performance of
this calibration.
DEATH ON CONTACT may result if
personnel fail to observe safety precautions.
REDUCE
OUTPUT(S) to minimum after each step within the
performance check where applicable.
a. Remove the individual TI pressure gages from TI case and connect each gage to
pressure gage tester.
b. Using hand pump on pressure gage tester, apply pressure to dead weight cylinder
until piston is approximately 9/16th of an inch above dead weight cylinder.
c. Visually inspect equipment connections for any signs of leakage. If required, release
pressure and apply oil free anti-seize compound to leaking connection and repeat b and c
above.
8. Pressure Gage
a. Performance Check
(1) Apply sufficient weights to pressure gage tester to obtain a 90 percent cardinal point
indication on TI gage. Indication as observed on TI will be within limits specified in
applicable table 3 or 4.
Table 3. Pressure Gage (10,000 psi)
Test instrument indications
Pressure gage tester
(psi)
(psi)
Min
Max
9000
8865
9135
8000
7880
8120
7000
6930
7070
6000
5940
6060
5000
4950
5050
4000
3960
4040
3000
2970
3030
2000
1970
2030
1000
985
1015
4500
4433
4567
4000
3940
4060
3500
3465
3535
3000
2970
3030
2500
2475
2525
2000
1980
2020
1500
1485
1515
1000
985
1015
500
492
508
4
