Instron 2603-080 - Calibration for 4200;4300;4400 Machines

Chapter: Operation
3-6 M26-16269-EN
4200, 4300 and 4400 Machines
You cannot use Bluehill to calibrate the long travel elastomeric extensometer because it is a
variable gauge length extensometer and Bluehill cannot read the gauge length.
Bluehill can read the calibration from the load frame console, so you must calibrate using
the load frame console as follows:
1. Disable the GPIB communications by pressing the
IEEE button. The LED extinguishes.
2. Plug in the extensometer.
3. Set the gauge length using the calibration Bar supplied (see page 3-2).
Leave the extensometer arms at the gauge length for the whole calibration process.
4. Press
STRAIN BAL key.
5. Press
ENTER key.
6. Press
STRAIN CAL key.
7. Press
0 on the numeric keypad.
8. Press
ENTER key.
9. Press
STRAIN CAL key.
10. Enter the full scale value of the extensometer on the numeric keypad in %, based on the
gauge length setting and the travel:
For SI units, if travel = 250 mm:
For a GL of 20 mm, then full scale and cal point = 1250%
For a GL of 25 mm, then full scale and cal point = 1000%
For a GL of 50 mm, then full scale and cal point = 500%
For US Customary units if travel = 10 in:
For a GL of 0.5 inch, then full scale and cal point = 2000%
For a GL of 1 inch, then full scale and cal point = 1000%
For a GL of 2 inch, then full scale and cal point = 500%
11. Press
ENTER key.
In order to calibrate in US Customary units (10 inch or 30 inch full-scale travel and 1 inch
gauge length), 4200 and 4300 machines needs a CPU Card (PROM part numbers must be
A474-717 or greater).