MTS Clip-On Gages - Manual (Page 24)

Calibration 24
The arms of the clip-on gage must be in the zero reference position.
This can be accomplished using a calibration block with the zero
reference set in it.
Adjust the zero control to set the clip-on gage signal to 0.00 V DC.
Note Several clip-on gages have asymmetrical outputs. This means
that the compression and tension outputs are not equal. Ensure
that you are aware of the maximum ratings of the clip-on gage
you are calibrating.
3. Adjust compression.
A. Install the clip-on gage on the calibration block so that the
clip-on gage arms are in the grooves that represent about 80%
compression displacement.
B. Adjust the gain control to set the clip-on gage signal to
-8 V DC (or 80% of your calculated output).
4. Readjust the zero and compression.
Repeat Step 2 and Step 3 until the zero and gain outputs can be
measured without readjustment.
5. Adjust tension.
Install the clip-on gage in the calibration block so that the arms are
in the 80% tension displacement position (or the maximum
positive travel).
• If the clip-on gage signal is above +8 V DC (or your
calculated output), adjust the
ΔK (delta K) control for a clip-
on gage signal of +8 V DC.
• If the clip-on gage signal is below +8 V DC (or your
calculated output), the
ΔK adjustment cannot be made. Return
the ΔK adjustment to its original setting and use the gain
control to increase the voltage halfway from its present value
to +8 V DC (this splits the difference between compression
and tension).
This completes the initial gain adjustment procedure using a calibration
block.