Accusetter Manual - BC MacDonald & Co.

3.4 Input Setup
Setting A/E Mag and Zero for Air Gage
NOTE: Inputs MUST be setup from the Calibration, Inputs menu not in RUN mode.
In Run mode the master corrections are applied. In Calibration mode the raw input
readings are displayed.
If the gage tooling is an airplug or air ring using an (1) channel or (2) channel A/E module
use the following procedure to set zero and magnification for each input(s) using a set of
max and min masters.
1) Press the CAL button.
2) Rotate the ENTER button until "INPUTS" is displayed and then press the ENTER
button.
3) Rotate the ENTER button to select the full scale value to be displayed on the bargraph
and then press the ENTER button.
4) Rotate the ENTER button to select an input, check, or fixture to display as a live
reading on the bargraph. Note: The live input, check, or fixture readings are always
displayed as deviations from nominal.
5) Load the MAX master into gage position.
6) Refer to the master calibration report to determine the master value of the MAX master.
7) Adjust the ZERO knob on the signal conditioning module until the digital display reads
the master value of the MAX master for the check being setup from the calibration
report.
8) Remove the MAX master and load the MIN master into gage position.
9) Calculate the difference between the reading with the MIN master loaded and the
reading with the MAX master from step 7.
a) If the calculated difference is less than the actual difference between the MAX and
MIN master values from the calibration sheet for the check being setup, the
magnification needs to be increased. This is done by turning the mag knob
clockwise.
b) If the calculated difference is greater than the actual difference between the MAX and
MIN master values from the calibration sheet for the check being setup, the
magnification needs to be decreased. This is done by turning the mag knob counter
clockwise.
NOTE: Use a factor of 3X for adjusting the display readings. For example: If the
displayed reading is +.0005 and the calibrated value is +.0001 the difference is .0004
greater. Therefore, you turn the "MAG" knob counter clockwise so that the reading
changes by .0012.
IMPORTANT: THE DIRECTION YOU TURN THE MAG KNOB DETERMINES
WHETHER YOU ARE INCREASING OR DECREASING THE
MAGNIFICATION. YOU SHOULD BE CONCERNED WITH HOW MUCH THE
DISPLAY CHANGES, NOT THE DIRECTION THE NUMBERS CHANGE!
(Cont)
3-44