Cdi-torque MULTITEST Government User Manual download pdf (Page 69)

5-5

Calibration

Quick Check

Always be alert to the potential for personal injury

that may be caused by excessive torque

applications, careless handling of heavy weights,

and out-of-balance or unsafe weight distribution.

1. With the MULTITEST Indicator ON, select TORQUE

measurement, TRACK mode, and select the UNITs of

measure appropriate to the transducer as specified in the

calibration check point table in this chapter.

2. Install the transducer to be checked and allow a 5 minute

warm up period to stabilize the electronic circuits and

transducer elements.

3. Transducers are mounted vertically for calibration as

instructed in Mounting Details in this chapter. Mount the

4-in-1 transducer to a sturdy bench using the bracket

provided. Mount single transducers vertically using

the accessory stand and block. Attach the specified

torque test bar, wheel or butterfly, secured with its drive

retention screw, and install the specified hanger for

clockwise (CW) torque application.

4. Apply and remove the full range torque for the transducer

three times.

5. Remove the weights and hanger, but leave the arm

attached, and wait approximately 30 seconds then press

ZERO TARE.

6. At each of the check points specified for the transducer

in the calibration check point table (in this chapter), apply

torque in the CW direction and verify the display

readings are within 0.25% of applied torque. If any

reading is out of specification, proceed to Calibrating

MULTITEST Torque/Force Transducers in this chapter.

7. Repeat Steps 3 through 6 in the counter clockwise

(CCW) direction.

When using the 2-1/2" or 5" test wheel, a small “S”

hook is supplied to provide a positive zero bias in the

direction (CW or CCW) that the calibration is

performed. Do not remove the “S” hook P/N 2000-151-4

when setting zero tare.

WARNING

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Cdi-torque MULTITEST Government User Manual Page 69