Care & Maintenance - Elcometer 125 Manual Del Usuario

3 TEST PROCEDURE: ISO-8503 Part 2 (continued)
4 Assess the profiles on the comparator that are nearest to the
profile of the test surface and determine its grade using the table
below.
5 Record the grades for all areas of the test surface. If any profile
is assessed as being below the lower limit for the 'Fine' grading,
report the grading as 'finer than fine'. If any profile is assessed as
being greater than the upper limit for the 'Coarse' grading, report
the grading as being 'coarser than coarse'.
Grade
Fine
Medium
Coarse
Additional Guidance Notes
The Elcometer 125 is only applicable for blast cleaned surfaces to
Sa 2½ and Sa 3 .
If visual assessment proves difficult, tactile assessment may prove
useful. It is possible to assess the closest grade by passing either the
back of a finger nail, or a wooden stylus held between thumb and
forefinger, over the test surface and the segments of the comparator.
4 CARE & MAINTENANCE
The Elcometer 125 is formed from a nickel alloy which can become
discoloured over time when exposed to high humidity. This
discolouration can easily be removed by rubbing the affected area with
a white plastic rubber (eraser) such as a Staedtler Mars Plastic
Eraser. Do not use other forms of eraser as these can leave an oily
film which makes the staining worse.
The Elcometer 125 requires careful handling and if any surface wear is
observed replacement is advised.
b
Additional information can be found in Elcometer 128 Pictorial Standards part number E128----1 available
from Elcometer or your local Elcometer supplier.
www.elcometer.com
Proles
Equal to Segment 1 and up to, but excluding, Segment 2
Equal to Segment 2 and up to, but excluding, Segment 3
Equal to Segment 3 and up to, but excluding, Segment 4
b
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