MTS Series 793 - Manual (Page 163)

Force Sensor Calibration
MTS Series 793 Tuning and Calibration Calibration Procedures 163
Task 4 Set the zero and offset
This task records the load standard readout as the zero reference.
Using a load standard
Standalone FlexTest SE Controllers: Adjust the Setpoint for 0 kN. Then zero
the load standard readout. Select Status > Setpoint
Automated Controllers: Adjust the Manual Cmd slider on the Manual
Command window for 0 kN. Then zero the load standard readout.
Using dead weights
Standalone FlexTest SE Controllers: Remove all dead weights, and then click
Auto Offset on the Offset/Zero menu. Select Setup > Force > Offset/Zero >
<<Auto Offset>>
Automated Controllers: Remove all dead weights, and then click Auto Offset
on the Offset/Zero tab (Inputs panel).
Task 5 Gain/Delta K Calibration
If you using Gain/Delta-K for your calibration type, complete the following
procedure. If not, complete
“Gain/Linearization Calibration” on page 170 or
“Millivolt/Volt Calibration” on page 179.
Calibrate tension
Force sensors can be calibrated so that a positive output represents actuator
compression and a negative output represents actuator tension, and vice versa.
You calibrate the negative side of the output with gain and the positive side of the
output with Delta K.