Tightening
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Diagram:
Angle
Torque
TC
Shut off point
TTrig
TC Threshold torque 1 – 4 Drops below trigger level
TTrig Trigger level
Step
1
2
3
4
Result var.: none
Alarms: Stick slip detected (SS)
Trace: The torque trigger level is shown as a horizontal line from the first drop to the last. In
dynamic mode the line represents the maximum trigger level that was used. The line is only
shown when Torque vs. Angle is selected.
6.5.4.15 Delta T (only available for Gauging)
Parameters: TH (Maximum delta torque), TL (Minimum delta torque).
Function: The difference between the peak torque and the low spot torque, measured from check
start to check end is compared to the limits. TH is the high limit and TL is the low limit. Both
or only one of the limits can be programmed.
If the check operates on step it starts at step start. It ends when the step end, the last
sample is taken at the shut off point of the step. If the check operates on zone the check
start when the selected zone starts and ends when the zone ends.
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