Rev 1 Page 128
Angular Displacement—To capture angular displacement, one characteristic, C1, is set up as the source of
Dsp(g2a), where g2a is configured for angle (capture) and Dsp() is a function used to record angular displacement.
Angular displacement is then obtained by rotating an angle transducer between start and stop key presses (<Enter>)
while in data entry mode:
Typical Application: Tool Checking
C1 is configured as above, C2 is configured for keyboard input, C3 is the difference between C1 and C2
and is auto scanned with C2. The Angle Transducer is installed on an angle-capable run-down tool that
has its own angle display. Zero the display on the run-down tool and press <Enter> on the data collector
to start the measurement. Rotate the tool approximately 360 degrees and press <Enter> again. Key in the
angle as displayed on the run-down tool for C2. C3 will detect any deviation between the two angular
measurements.
Angle Set— Angle Set is for hand assembly where joints or clamp load is critical, and a given angular rotation of
the transducer past “snug” is required (for example, when a fastener needs to rotate 6 degrees past 30 Nm of
torque).
To apply the ‘set angle’ algorithm, an auto-scanned pair of characteristics (C1 and C2) must be set up
where the C1 source is ‘Gx’ and ‘Gx’ is Type=Peak, and C2 is set up where source is ‘Gxn’ and ‘Gxn’ is an
angle gage type configuration with the ‘Use’ parameter set to ‘Set’.
Per Above Example:
Source of C1 = g2{30} (where g2 is configured Type=Peak and 30 = start threshold, i.e., snug)
Source of C2 = g2a (where g2a is configured Type = Angle, Use = Set) and the lower spec limit is set to 6.0.
Sample Event: Angle
Torque algorithms may now be configured to be sampled by a change in angle or by a change in
time (in previous releases, sampling was only time-based).
A ‘Sample Event’ parameter has been added to torque gage configurations. If set to ‘Angle’
(instead of ‘Time’), the analog signal will be sampled for algorithm satisfaction whenever the
angular displacement changes.
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