TB 9-5120-202-24
(2) Slowly apply torque to TI and in a clockwise direction for full-scale indication on
TI.
(3) Slowly release torque until only tare torque of TI is applied.
(4) Repeat (2) and (3) above two more times.
(5) Remove TI from holding fixture.
NOTE
When
applied
torque
changes
from
clockwise
to
counterclockwise, repeat technique of steps p and q above for
counterclockwise.
NOTE
The calibration point must be approached in the direction of
increasing torque. For higher capacity wrenches, loader should
be used to apply a constant torque.
NOTE
Some micrometer preset torque wrenches indicate when the set
torque has been reached by momentary release action of the
drive for a few degrees. An audible "snap" signal may also be
present at high torque settings.
NOTE
Throughout this procedure use torque cell with adapters
appropriate to TI range.
8. Accuracy [12 in-lbs (192 in-oz) or greater)]
a. Performance Check
(1) Exercise torque cell using method similar to step 7 q above.
(2) Exercise TI using method similar to step 7 r above.
(3) Set TI to a cardinal point of 20 percent of full-scale or lowest cardinal point,
whichever is greater.
(4) Press the F4 key on the force/torque indicator until →0← is displayed as soft
key. Press the →0← soft key to zero force/torque indicator.
NOTE
Force/torque indicator must be in the GROSS mode before it
can be zeroed.
