Download 793 Tuning and Calibration

Force Sensor Calibration
You must know which DC
conditioner is associated
with the force sensor. You
also need to know which
of the two DC conditioners
on the module is used by
your load cell.
497.22
DC Cond
C
h
C
h
U
Lim
Excit
Fail
R-Cal jack for the sensor
connected to Jx01.
The shunt resistors for the
Model 497.22 DC
Conditioner are packaged
in a thumb-nail sized
module. It makes it easier
to install and remove the
shunt calibration resistor.
RCal
R-Cal jack for the sensor
connected to Jx02.
RCal
Out
1
Out
10. Verify that force is still zero.
While it is unlikely, it is possible for the force signal to change
when the control mode changes. If it does:
Standalone FlexTest SE Controllers: Click Auto Offset on the
Offset/Zero submenu to zero the force output. Select Setup >
Force > Offset/Zero > Auto Offset
Automated Controllers: Click Auto Offset on the Offset/Zero
tab (Inputs panel) to zero the force output.
11. Perform shunt calibration.
Standalone FlexTest SE Controllers:
Select Setup > Force > Calibration > Select Cal Type
A.
Select required Shunt Display units.
B.
Ensure that Shunt State (+) is set to On. Polarity is always
positive.
Note the Shunt Ref (+) value, it should be 60%–90% (80% is
ideal) of the calibrated range of the sensor.
C.
Click Update to copy the current shunt reference value into
the Shunt Reference box.
D. Set Shunt State (+) to Off.
MTS 793 Tuning and Calibration
181