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mvip@mitech-ndt.com
4.1.4 Hardness scale setting
Metal hardness can be displayed in different hardness scales: HL(Leeb), HRC (Rockwell C), HB (Brinell),
HV(Vickers), HS, HRA and HRB. The instrument enables measurements to be rapidly taken and
displayed in any chosen hardness scale.
The hardness scale can be selected with the
arrow keys, or by pressing F2 key.
Press
or F3 key to confirm the selection.
Press
key to cancel the change and close
current dialog box.
Dynamic HL values are converted to equivalent static hardness values, e.g. HV, HB and HRC, with a
certain conversion scattering.
Hardness scale conversions are material specific, caused by the fact, that there is no clear physical
relationship between the various methods.
Note: For some specific materials, the hardness value can’t be displayed in all hardness scales. If a
hardness scale is not supported for the selected material, that hardness scale item will be disabled
automatically and can’t be selected. The hardness scale is reset to HL automatically after changing the
material. So select material before changing the hardness scale.
4.1.5 Hardness/Strength setting
The instrument has an feature that allows the user to convert hardness readings into tensile strength.
Note: Only impact device D and DC have the function of strength test option. You can not change the
Hardness/Strength setting (fixed to hardness) when using other types of impact device.
Press
or F3 key to select between hardness
and strength while the Hardness/Strength item is
high-lightened.
The Hardness/Strength setting would be set to
hardness automatically after replacing the impact
device whether the setting is hardness or not
before.
If the Hardness/Strength setting is hardness, the Hardness Scale item will be disabled and can not be
changed.
4.1.6 Average times setting
Average times can be adjusted from 1 to 32. The measurement series will be closed and the average
test value will be displayed when the measurement series reaches Average times setting.
Press arrow keys to increase or decrease the
value.
Press
or F3 key to confirm the setting.
Press
key to cancel the change and close
current dialog box.
4.1.7 Tolerance limit setting
Setting the limits for a measurement series. Values outside the limits are displayed with a “↑” or “↓”.
