EN - 24
5.6
Characteristics of the sample
Sample
Sample weight
Minimum thickness
Maximum roughness
Impact
device
Support
necessary
Stabilisation
necessary
No stabilis.
necessary
Sample
Hardened
layer
ISO
Ra
Rz
D
0.05 ... 2
2.5
>5
3
0.8
N7
2 µm
10 µm
6
6
Operation
6.1
On / Off
Press the On/Off / Menu key. The device is now switched on and ready to use.
The settings you have previously made will be displayed. If you wish to work with these settings, you can start your
measurement immediately. If not, you can make your settings using the keypad.
To switch off the device, press and hold the On/Off / Menu key for three seconds. The display will indicate
„OFF“.
6.2
Selection of impact direction
Move the cursor by means of the Direction key until you see the desired impact direction. You can select between
←, ↓, , →, and ↑.
6.3
Selection of material
Press the Material key several times until you reach the desired material.
6.4
Selection of hardness scale
Press the Conversion key several times until you reach the desired hardness scale. You can select between HL,
HRC, HRB, HV, HB and HS.
6.5
No. of measurements for averaging
Press and hold the On/Off / Menu key for 6 seconds to enter the AVE (averaging) menu. Then select the number
of measurements you want to be considered for averaging, using the Readout / Up key or Delete / Down key. You
can select a number between 2 and 9. For example, if you select "3", the meter will display the average value after
3 consecutive measurements.
“0“ means that no average value is calculated. To leave this menu, press the On/
Off / Menu key.
6.6
Measurement
Non-observance of the safety, as well as the following instructions can cause injuries.
First, check the hardness tester, using the standard test block.
Push the load tube towards the support ring to lock the impact body. Do not stop holding the load tube when doing
so and then return it to its original position.
If you return the load tube to its original position too quickly, parts of the meter can be damaged. Do not
release the load tube.
Hold the impact device between your thumb and index finger and touch the sample with it. Make sure that it rests
firmly on the surface and that the impact direction is vertical to the test surface. Otherwise, false measurement
values can occur.
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