Stanley QB Expert User Manual

Appendix A
Instruction Manual
197
to 10 degrees different depending of the hardness of the joint.
The only way to get consistent results when validating an angle reading against an external monitor is to pre-
torque the joint slightly higher than the snug torque. Run the tool on this already-tightened joint, with the snug
torque set to the same value in both the controller and the monitor, even if the tool’s transducer and the external
transducer do not exactly agree near the snug torque, they will both start counting angle just before the fastener
starts to rotate, so their zero angle will be synchronized exactly.
For example, if a brake line fitting requires six NM plus 40 degrees, pre-torque the joint to seven NM first. Then
change to an Angle Control strategy, with six NM snug torque, plus 40 degrees angle target, and reset the
external torque/angle monitor. Then as the tool is run in this angle control mode, the tool will start counting angle
as soon as it has six NM (which might have been five or seven NM according to the external transducer), which is
before the joint actually starts to rotate. And the external monitor will start counting angle as soon as it has six
NM which is also before the joint starts to rotate. This way, both meters are reading angle from the same point,
even though the torque readings may differ slightly because of the allowable tolerances in the torque calibration.

Stanley QB Expert Specifications

General

Brand	Stanley
Model	QB Expert
Category	Controller
Language	English