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4 Testing Program
4.1 Start-Up
• Insert the plug of the impact device into the socket of impact device on the
instrument.
• Press the key to power the unit on. The instrument ready for testing.
4.2 Loading
Pushing the loading-tube downwards until contact is felt. Then allow it to slowly
return to the starting position or using other method locking the impact body.
4.3 Placement
Press the impact device supporting ring firmly on the surface of the sample, the
impact direction should be vertical to the testing surface.
4.4 Testing
• Press the release button on the upside of the impact device to test. The sample,
the impact device as well as the operator are all required to be stable. The
action direction should pass the axis of the impact device.
• Each measured area of the sample usually need 3 to 5 times of testing operation
to obtain an average. The result data dispersion should not more than mean
value±15HL。
• The distance between any two impact points or from the center of any impact
point to the edge of testing sample should conform to the regulation of Table 4-
1.
Table 4-1
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