CDI Torque MULTITEST Government - Manual (Page 72)

5-8
Calibration
Torque/Force Calibrations
MULTITEST Torque/Force Transducer Calibration
Improper calibration can result in torque
measurement errors. Follow these procedures
precisely. If an error is made in the procedure, turn
the indicator off and begin again. Users are
responsible for the results of their transducer
calibration.
MULTITEST series torque/force transducers can only be
calibrated using the MULTITEST Indicator. Calibration data is
calculated and then stored in the EEPROM memory chip of the
transducer by the microcontroller in the Indicator.
Always be alert to the potential for personal injury
and equipment damage that may be caused by
excessive torque applications, careless handling of
heavy weights, and out-of-balance or unsafe weight
distribution.
Equipment
• Precision test arms and certified calibration weights.
• Test stand.
Procedure
1. With the MULTITEST Indicator ON, select TORQUE
measurement, TRACK mode, and select the UNITs of
measure appropriate to the transducer. Refer to the
calibration check point table in this chapter for the
transducer calibration check points, and specified arms,
hangers and weights.
2. Install the transducer being calibrated and allow a 5
minute warm up period to stabilize the electronic circuits
and transducer elements.
3. Mount the 4-in-1 transducer upright, drives vertical, as
shown in Figure 5-4, or mount single transducers
vertically using the accessory stand and block as
detailed in Figure 5-3. Attach the specified torque arm,
secured with the drive retention screw, and install the
specified hanger for clockwise (CW) torque application.
Use the “S” hook on the 2-1/2" or 5" bars.
4. Press CAL. LED display reads the following message
with least significant digit (LSD) flashing:
CODE0000
WARNING
IMPORTANT