RTA - Residual Torque/Angle
This step guides the user in measuring the residual torque on a joint by detecting the residual point on the Torque/Angle trace.
Parameter | Description |
|---|---|
Residual angle threshold | The maximum angle (measured from the Trigger torque) for the residual torque when the residual torque is lower than the breakaway point. |
Breakaway angle threshold | The maximum angle for the residual torque (measured from the Trigger torque). |
Trigger torque | Defines the torque value from which the angle measurement starts (usually set to 50% of the Target torque). If Trigger torque = 0, its value is automatically set to the smartHEAD Min torque value. |
Ratchet time | Starts when the torque goes below the Rundown complete torque without reaching the 3rd percentage value. This allows the operator to release the torque for a while and recharge during the tightening operation. Default value: 5 sec. Minimum value: 0.1. |
Torque correction coefficient | When extensions are used, the wrench measurement might be compensated to show a more accurate torque value. To calculate the correction coefficient, please refer to How to calculate the Torque Correction Coefficient. When extensions are not used, Torque correction coefficient = 1. |
Angle correction | When extensions cause additional wrench bending, the wrench angle measurement can be compensated to show a more accurate angle value. When extensions are not used, Angle correction = 0. |
