Instron AutoX, Operator'S Manual

Page: 36 / 60

Chapter: Preparing to Test
36 M16-16654-EN
Setting the Tension of the Arms
You need to adjust the tension of the arms to ensure good contact with the specimen.
Rotate counterclockwise to increase the tension, rotate clockwise to decrease the
tension.
The adjuster is marked with a numeric scale. The number increases as you increase the
tension on the arms. These numbers are for comparison purposes only; make a note of
the setting for optimum contact with the specimen and you can then reset the tension at
any time to the same setting.
Setting Limit Stops
Make sure that the upper and lower limit stops on the extensometer are set so that the
extensometer cannot collide with other equipment or the load frame during use.
Figure 14
on page 38 shows the upper limit stop.
Figure 12. Wide Arms
Adjustment screws