Model No.ME-8236
Operation
5
012-13762D
Creating the Compliance Calibration Information
In the software, a polynomial curve fit is applied to the plot
of position versus force data. The coefficients of the polyno-
mial curve fit are saved as the calibration information.
Once the compliance calibration is created for the Machine,
the software automatically subtracts the amount of “flex”
from the raw data. After the calibration information is stored
in the Machine, it cannot be edited. However, it you make a
new calibration, it will replace the stored calibration data.
Saving the Calibration Information
The calibration information can be saved in two ways: in the
Capstone file or in the Materials Testing Machine itself. If
the calibration information is saved in the Capstone file, it
can be used with any Materials Testing Machine. If the cali-
bration information is stored in the Materials Testing
Machine, the information stays with that unit (even when it
is unplugged) and can be used with any Capstone file in the
future.
Mount the Calibration Rod for Tension
To mount the calibration rod for tension, screw the
short-threaded end of the rod into the top of the load cell.
Lower the load bar until the threaded part at the top of the
calibration rod goes through the hole in the load bar. Screw
the load bar round nut onto the top of the calibration rod.
Mount the Calibration Rod for Compression
To mount the calibration rod for compression, screw the
short-threaded end of the rod into the top of the load cell.
Screw the calibration nut onto the top threaded part of the
calibration rod until the nut is at the bottom of the threaded
section. Lower the load bar until the bottom of the load bar
rests on the top of the calibration nut.
Attach the Safety Shields
Attach the Velcro® hook material on the two safety shields
to the Velcro® loop material on the front and back of the
Load Bar. Adjust the position of the shields so that they will
block any fragments that may come from the calibration rod
in case it accidentally breaks.
Prepare to Record Calibration Data
Connect the plug on the sensor cable into a PASPORT inter-
face, such as the USB Link (included in the Materials Test-
ing System). Connect the interface to a USB port on a
computer.
See Appendix A for details of the Calibra-
tion Procedure.
After the Calibration Procedure is com-
plete, return to this point.
Mount a Tensile Sample
Select a tensile sample to mount onto the Materials Testing
Machine. Put the end of the sample with the short threaded
section into the threaded hole in the top of the load cell.
Screw in the sample until the top edge of the short threaded
section is flush with the top of the load cell.
Load Bar
Round
Nut
Load Bar
(crosshead)
Calibration
Rod
Crank
Handle
Load
Cell
Figure: Mount Calibration Rod for Tension
Calibration
Nut
Figure: Mount Calibration Rod and Nut for Compression
Load
Cell
Load Bar
(crosshead)
Sensor
Cable Plug
USB Link
