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3 TEST PROCEDURE (continued)
3.2 USING A WET FILM WHEEL
The procedure outlined below is for guidance only. Consult the
relevant Standard for full details of the applicable test procedure.
1
Using a finger and thumb, hold the
wheel by its central spindle with
the maximum reading on the scale
nearest to the paint film.
2
Place the wheel into the wet film
ensuring that the wheel is
perpendicular to the film.
3
Roll the wheel across the film
through 360°/180° (depending
upon standard) and then remove
from the surface.
4
Locate the first point on the central wheel where the paint has
adhered. Read the wet film thickness from the scale on the side
of the wheel at this point.
Repeat the procedure at least twice in different places to obtain
representative results.
To use the wheel on pipes, roll the wheel at right angles to the
longitudinal axis of the pipe.
On rough surfaces, measurements will be made from the surface
peaks and therefore will represent the minimum wet film thickness.
3.3 CLEANING AFTER TEST
Clean the wet film comb or wheel after each test using a suitable
solvent. After cleaning, ensure that all materials are removed and that
the gauge is dry.
DO NOT use very aggressive solvents or wire brushes, metal
scrapers, metal files, or other metallic tools for cleaning.
Store the wet film comb or wheel in the wallet / case provided when
not in use.
b
A storage wallet / case is not supplied with the Elcometer 112AL and Elcometer 154.
d
Does not apply to the Elcometer 154 which are designed to be used once and kept as a record of wet lm
thickness measurement for quality assurance or customer requirements.
www.elcometer.com
Wet Film
Substrate
d
R
b
en-4
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