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HT360 series user manual Copyright©Qingdao Hantek Electronics Co.,LTD
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Each measuring part of the sample is generally tested for five times. The data
dispersion shall not exceed ± 15HL of the average value;
The distance between any two indentations or the distance from the center of any
indentation to the edge of the sample shall comply with Table 4.2
For a specific material, in order to convert the Leeb hardness value to other
hardness values more accurately, a comparison test must be conducted to obtain
the corresponding conversion relationship. The method is: use qualified Leeb
hardness tester and corresponding hardness tester to test on the same sample
respectively. For each hardness value, measure five Leeb hardness values evenly
around more than three hardness indentations that need to be converted. Use the
average Leeb hardness value and the average corresponding hardness value as
the corresponding values, and make a hardness comparison curve. The
comparison curve shall include at least three groups of corresponding data.
The distance between
two indentation centers
is not less than (mm)
The distance between the
indentation center and the sample
edge is not less than (mm)
Table 4 Measurement
4. Read the measured value
Take average value of several valid test points as one Leeb hardness test data.
Display the hardness value in front of the Leeb hardness symbol HL. The HL
values measured by different types of impact devices are different.
4.5.2 Adjusting the support
When using the instrument, the user can open the standing foot as a support to tilt the
instrument upward for easy operation and observation. When the instrument is not in
use, the user can close the support to facilitate placing or moving.
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