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Sensor I® Expert User Manual
CALIBRATION
General Information
This section describes the calibration method for the torque/angle sensors.
Calibration is accomplished by performing tightenings with the wrench and
referencing external measuring equipment to compare the results. The
Parameter Adjustment Knob on the wrench's front panel is used to match
the wrench display readings to that of the reference equipment. Calibration
values are stored in nonvolatile memory. Any previously entered setup
parameters already stored in tightening modes are scaled to reflect the
altered calibration. Performing calibration causes all final tightening data
and stored curves to be flushed from memory. Calibration requires torque
instrumentation certified to national standards at 0.1% of torque. Currently
angle measurements are not traceable to a national standard.
When calibration is complete, rotate the Mode Select switch back to the
setup position. Press the Reset button and rotate the Parameter Adjustment
Knob CCW until the Custom Setup Mode number is below 100. This is
necessary to activate the Timeout feature. Update records or label with new
calibration information and data.
NOTE
If calibration equipment is not available, it is recommended that the
wrench be returned to an authorized Ingersoll-Rand service center for
an annual recalibration.
NOTE
If the wrench has an angle reference arm (models EA-), calibrate angle
before calibrating torque. If the wrench has an EZ angle non-contact
angle sensor (models EVS-), calibrate torque before calibrating angle.