TB 9-6670-258-35
(15) Exercise load cell No. 4 and TI cell by applying pressure until TI meter pointer
indicates NULL. Release pressure, and then apply pressure to full scale of TI three times.
CAUTION
Avoid overshooting 50,000 pounds pressure; approach NULL
indication slowly.
(16) Make sure that lower adapter (fig. 6) is tightly attached to load cell No. 4 after
pressure is released.
(17) Set TI INITIAL LOAD switch to 10 and WEIGHT dial to 5000 pounds.
(18) Apply load for null condition as indicated on TI balance meter. If indication on
load cell is not between 14,962.5 and 15,037.5 pounds, perform b below.
NOTE
Do not overshoot null condition. If this occurs, release pressure
and repeat a (18) above.
(19) Set INITIAL LOAD switch to 15 and WEIGHT dial to 0.
(20) Repeat (18) above.
(21) Perform check at 5000 pound increments to high limit of cell under test.
Indication on TI and load cell indicator will be within 25 pounds or 0.25 percent
whichever is greater.
(22) Release pressure from system and remove TI cell No. 1 from setup.
(23) Repeat (10) through (22) above for each of the remaining two cells.
(24) Substitute load cell No. 3 for cell No. 4 in setup. Change adapters as required.
(25) Set TI INITIAL LOAD switch to 10 and WEIGHT dial to 0.
(26) Exercise load cell several times by applying pressure until TI indicates null, and
then release pressure.
CAUTION
Do not overload load cell.
(27) Repeat technique of (17) through (23) above, checking each TI cell from 1000 to
10,000 pounds in 1000 pound increments. Indication on TI and load cell indicator will be
within 25 pounds.
(28) Substitute load cell No. 2 for cell No. 3 in setup. Change adapters as required.
(29) Set TI INITIAL LOAD switch to 0 and WEIGHT dial to 1000.
(30) Exercise load cell several times by applying pressure until TI indicates null, and
then release pressure.
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