MAINTENANCE AND INSPECTION
11 Maintenance and inspection
Periodically checks of the device should be executed with standard hardness
test blocks. The thickness of the test block is very important due to the
measuring method. It should be no less than 15 mm. Test blocks of lesser
thickness (e.g. 6 mm) aren't suitable. The edge length of the hardness test
block must be at least 50 mm.
These special UCI hardness test blocks, including ISO and ASTM, are
available in various hardnesses from the manufacturer of the device.
A maintenance of the probes should be performed at intervals of 12 months.
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