TB 9-6685-316-50
the other table rises, the TI is within tolerance. If the opposite weight table does not
rise, the TI is not within tolerance.
(7) Replace the TI 100-psi weight with a different 100-psi weight without
replacing the standard 100-psi weight. Repeat steps (4) through (6) above. Repeat this
procedure until each TI 100-psi which has been checked.
(8) Repeat the above technique for each TI weight as indicated in table 12.
Test instrument
Standard
Weights to place
Calibration weight
Weights to place
Calibration weight
on test instrument
(added mass)
on (standard)
(added mass)
(psi)
(oz)
(psi)
(oz)
100
1/16 and 1/32
100
1/8 and
1/32
40
1/32 and 1/64
two 20
1/16
20
1/64
20
1/32
One 201 and one 10
1/32
one 20 and two 5
1/32 and 1/64
One 201 and one 5
1/32
one 20 and one 5
1/32 and 1/64
1Weight
not replaced for calibration using smaller weights.
(9) Replace the standard 0-600 psi pressure gage with the 0-5000 psi pressure
gage.
(10) Remove all weights from the standard and TI weight tables. Place eighteen
100-psi weights on the standard and TI weight tables (nominal pressure 1805 psi).
(11) If the standard is floating, place 27/8 oz of weight from the avoirdupois weight
set (A2) on the standard. If the TI weight table is floating, place 113/16 oz of weight on
the TI weight table. If the table to which weight has been added falls and the other table
rises, the TI is within tolerance. If the opposite weight table does not rise, the TI is not
within tolerance.
(12) Replace the low-range piston with the high-range piston in the TI and
standard, and install the 0-600 psi pressure gage.
(13) Place one standard and one TI 500-psi weight on their respective weight
table.
(14) Repeat (4) through (6) above.
(15) Replace the standard 0-600 psi pressure gage with the 0-10,000 psi pressure
gage.
(16) Place eighteen 500 psi weights on the standard and TI (nominal pressure
9,025 psi).
(17) If the standard is floating, place 27/8 oz of weight from the avoirdupois weight
set (A2) on the standard. If the TI weight table is floating, place 113/16 oz of weight on
the TI weight table. If the table to which weight has been added falls and the other table
rises, the TI is within tolerance. If the opposite weight table does not rise, the TI is not
within tolerance.
b. Adjustments. No adjustments can be made.
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