TB 9-5120-212-24
CALIBRATION PROCESS FOR
ADVANCED TORQUE, MODEL CTW 1200-T55
14. Preliminary Instructions
a. The instructions outlined in paragraphs 14 and 15 are preparatory to the calibration
process. Personnel should become familiar with the entire bulletin before beginning the
calibration.
b. Items of equipment used in this procedure are referenced within the text by common
name as listed in table 2.
c. Unless otherwise specified, verify the result of each test and, whenever the test
requirement is not met, take corrective action before continuing with the calibration.
Adjustments required to calibrate the TI are included in this procedure. Additional
maintenance information is contained in the manufacturer's manual for this TI.
d. Unless otherwise specified, all controls and control settings refer to the TI.
15. Equipment Setup
a. Verify that TI is clean and free from defects that would impair its operation.
b. Ensure that equipment has been allowed to stabilize at the ambient temperature.
c. Position torque fixture on a stable and rigid work surface and secure with bolts
or clamps.
d. Place torque cell no. 1 inside fixture with dowel pins engaging holes in bottom of
fixture. Place plate (furnished with torque fixture) onto torque cell.
CAUTION
Adapter plate must be used or damage to the TI may result.
holes. Insert drive bar through central hole of adapter plate and top of torque fixture and
into the square hole of the torque plate on top of the torque cell.
f. Remove the stretch dial and pointer from the bottom of the TI by loosening two set
screws on the side of the dial. Place the TI on the adapter plate engaging the drive bar and
dowel pins. Install the pull handle in the TI socket (top).
g. Turn on TI using the ON/OFF pad. The display should read "WELCOME TO
ADVANCED TORQUE LLC" followed by the range of the sensor that has been connected
to the TI.
h. Press Units pad until it indicates ft/lbs.
i. Select Track if the TI is not already in Track mode.
Zero the TI by pressing the ZERO pad.
j.
k. Select AUTO mode by pressing the PEAK/TRACK pad.
l. Connect torque cell to force/torque indicator using cable supplied with force/torque
indicator. Connect force/torque indicator to appropriate power source. Turn power switch
to ON and allow the units to warm-up for 30 minutes. Select channel 3 using the
CHANNEL + and keys.
