Version 3.6
ZSH 2090 Instruction manual
Operate
4. Test
procedures
Test has to be done under laboratory conditions.
In the different standards, the test is carried out differently. Here, the procedure is
described when starting with a hard pencil or lead.
Please note that the procedure might have to be carried out in the reverse order
of succession!
•
Start testing with a hard pencil.
•
Place the instrument on the level test surface.
•
Hold the instrument by the wheel hubs and push forward at a speed of
5-10 cm/s for a distance of at least 7 mm (cf. arrow).
•
Examine the test surface with the naked eye for indentation or scratching.
•
Repeat the process down the hardness scale until a pencil is found that will
not cut the film to the substrate (either metal or a previous coat) for a distance
of at least 3 mm.
•
Continue the process until a pencil is found that will neither cut nor scratch the
surface of the film (any defacement other than a cut or gouge is considered a
scratch.
last update: 12.01.2006
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