Quick check, Warning – CDI Torque SURETEST Torque Calibration System User Manual
Page 47
CALIBRATION
CHAPTER 5
5-46
The 4-in-1 transducer may also be mounted to the calibration stand, shown in Figure 5-2, using the
standoff fixture and bracket assembly. For this mounting configuration the two slide knobs must be
loosened and four 5/16-18 bolts attached to secure the 4-in-1 transducer to the bracket assembly.
Quick Check
WARNING
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 SURETEST ON, select 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 horizontally 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 horizontally 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 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
SURETEST Torque 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 when
setting zero tare.