MTS Series 793 - Manual (Page 147)

Displacement Sensor Calibration
MTS Series 793 Tuning and Calibration Calibration Procedures 147
Note The Gain/Linearization Calibration procedure that follows applies only to
controllers equipped with full-range conditioners (e.g., Model 493.25
DUC module).
Task 7 Gain/Linearization Calibration
If you are using Gain/Linearization for your calibration type, complete the
following procedure. If not, complete Task 6 Gain/Delta K Calibration on
page 142.
Important Using linearization data requires specific conditioner zeroing
practices. Ensure that Electrical Zero is set to zero and the
Electrical Zero Lock box is set (enabled). Adjusting electrical zero
after calibration may invalidate linearization data.
Initial LVDT calibration For initial calibration of an LVDT complete the following procedure:
1. Select Gain/Linearization for Cal Type.
Standalone FlexTest SE Controllers: Select Setup > Disp. > Calibration
> Cal Type > Gain/Linearization
Automated Controllers: Select Gain/Linearization for Cal Type on the
Calibration tab of the Inputs panel.
2. Apply a retraction command that is 80% of the full scale range.
Standalone FlexTest SE Controllers:
A. Enable the front panel Dial.
B. Use the Dial to adjust the Setpoint for 80% of the full scale range.
C. Verify that your LVDT displacement signal equals 80% of the full scale
range.
Automated Controllers:
A. Open the Manual Command window, and then click on the Enable
Manual Command.
B. Adjust the Manual Cmd slider on the Manual Command window for
80% of the full scale range.
C. Use the Station Signals panel to verify that your LVDT displacement
signal equals 80% of the full scale range. During the initial calibration
and tuning of your system, it may take repeated adjustment for the two
values to match.