Manual

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7 Calibration

If the device has not been used for a longer period of time, it must be calibrated carefully. A

calibration is also necessary if the impact devices are changed frequently. Use the hardness test

block to calibrate the meter.

- To enter calibration mode, switch on the instrument by pressing the On/Off key .

Then press and hold the arrow key until the device indicates that it is in

calibration mode.

- Measure five different points on the standard test block. You will see in the display how

many measurements you have made. After the fifth measurement, the display will

directly show the average value of the calibration.

- Compare the average value with the HLD value on the upper side of the standard test

block.

- Use the arrow keys and to change the average value of the calibration.

The calibration range is ±150HL.

- Press the Menu key to confirm the calibration or the Back key to cancel

the calibration.

Note: Measuring parameters such as material, hardness scale and impact direction cannot be

changed during the calibration.

8 Maintenance

8.1 Storage

Store the measuring instrument in its carrying case and make sure the environmental conditions

are within normal ranges. Avoid magnetic fields, corrosion and shocks.

8.2 Removing the sensor cable from the meter

Hold the moveable connecting piece on the sensor cable which is inserted into the sensor

connection and pull it away from the instrument.

8.3 Maintenance and care of the impact device

- After using the impact device approx. 1000 – 2000 times, the guide tube and the impact

body should be cleaned by using the nylon brush that comes with the meter. To do so,

unscrew the support ring, then take out the impact body, move the nylon brush through

the guide tube counterclockwise, making helical movements until you reach the bottom.

Repeat this procedure four times. Re-install the impact body and the support ring.

- Do not use any lubricants inside the impact device.

- Place the impact body back into the loading tube and screw the support ring back onto

the end of the impact device.