MTS SWIFT 10 MC Sensor - Manual (Page 28)

SWIFT 10 MC Sensors 28
Calibration
Hardware Overview
When you press the Shunt button, the associated Shunt indicators toggle while
the shunt is in progress. As the TI automatically switches through the series of
bridges, it verifies that the outputs are within the accepted tolerance range. If all
bridge shunt values fall within the tolerance range, the Shunt indicators on the
front panel will go off (after several seconds). If any bridge fails the shunt test,
the red, fail indicator lights, indicating that the shunt calibration has failed. The
fail indicator remains lit until a shunt check passes or until you cycle power off
and on. Use the TI2STATUS utility to get more detailed information about the
shunt failure.
Example of Calibration File Shunt Data
The above example shows shunt data from the calibration file. This data may be
transferred, using the TI2XFER program, from the transducer interface memory
to a computer or from a computer to the transducer interface memory. Note that
items marked ShuntDeltaMeas are not stored in non-volitile memory. These
values are set after a shunt has been commanded..
For more information on TI2XFER, see the chapter, “Software Utilities”.
Checking the
calibration
You can check the calibration of a transducer at any time by pressing the Shunt
switch (described earlier). Subsequent shunt commands compare the current
feedback values against those stored in the TI. You may set the tolerance values
for each TI by editing the calibration file. See the chapter, “Setting up the
Transducer Interface”, for instructions.
ShuntTolerance=2
FX1ShuntDeltaRef=0.853209
FX2ShuntDeltaRef=0.854306
FY1ShuntDeltaRef=0
FY2ShuntDeltaRef=0
FY3ShuntDeltaRef=0
FY4ShuntDeltaRef=0
FZ1ShuntDeltaRef=0.853212
FZ2ShuntDeltaRef=0.854973
FX1ShuntDeltaMeas=0.85321
FX2ShuntDeltaMeas=0.85454
FY1ShuntDeltaMeas=0
FY2ShuntDeltaMeas=0
FY3ShuntDeltaMeas=0
FY4ShuntDeltaMeas=0
FZ1ShuntDeltaMeas=0.85388
FZ2ShuntDeltaMeas=0.85497