Press 、 and press simultaneously,the tester is switched on and it enters the software
calibration state.
Preset the impact direction as【 】.
Measure 5 points on the standard hardness block.
It will display average value after measurement.
Press 、 to input nominal value.
Press to finish calibration.
Range of adjustment: ±15HL.
6.12 Battery replacement
Battery replacement see figure 5.