MTS Series 793 - Manual (Page 165)

Force Sensor Calibration
MTS Series 793 Tuning and Calibration Calibration Procedures 165
1. Select Gain/Delta-K for Cal Type.
Standalone FlexTest SE Controllers: Select Setup > Force > Calibration
> Cal Type > Gain/Delta-K
Automated Controllers: Select Gain/Delta-K for Cal Type on the
Calibration tab of the Inputs panel.
2. Exercise the force standard.
Standalone FlexTest SE Controllers: After enabling the front panel Dial,
adjust the Setpoint to cycle the load standard readout between zero and full
tension three times. This removes sensor hysteresis. Select Status >
Setpoint
Automated Controllers: Use the Manual Cmd slider on the Manual
Command window to cycle the load standard readout between zero and full
tension three times. This removes sensor hysteresis.
Example: When calibrating a ±10 kN range, exercise the actuator between 0
and -10 volts. To calibrate the same force sensor for a different range such as
±5 kN, exercise the load standard between 0 and -5 volts.
3. Apply a tensile force command that is 80% of the full scale range.
Standalone FlexTest SE Controllers:
A. Using the Dial, adjust the Setpoint for a tensile force command that is
80% of the full scale range.
B. Verify that your force transducer feedback signal is 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 force transducer
signal equals 80% of the full scale range.
During the initial calibration and tuning of your system, it may require
repeated adjustment for the tensile force command and feedback values to
match.