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Wet Film Thickness
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It is
important that a coating is applied to the correct thickness. Applying too
much wet
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coating
will not only waste and money, but also there is also a possibility of the
coating
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cracking during the curing process. Too little coating and there
is a chance that the substrate
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will not be sufficiently covered.
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To control process variables, it is often desirable to measure
whilst the film is still wet. Wet film
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measurements are also useful for systems where the dry film
thickness can only be measured
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destructively.
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Elcometer 3238 Long Edge Wet Film Combs
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Similar
to the Elcometer 115, the Elcometer
3238 provides the User with more measurement points
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(teeth).These
rectangular wet film combs are available in 3 ranges – supplied either
separately or
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in a set of 3.
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At a glance
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 Stainless steel wet
film combs with “teeth” along each long edge to provide more
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measurement
points in on gauge.
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Available
individually or in a pack of 3.
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Test Method – How to use a Wet Film Comb
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Place a
comb perpendicular to, and touching the substrate. Hold the comb in position
and wait a few
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seconds until the teeth are “wet”. Remove the comb from the
film.
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The wet
film thickness lies between the biggest value “coated” or “wet” tooth and the
smallest value
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“uncoated” or “dry” tooth value.
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Can be used in accordance with:
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ASTM D
4414-A
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BS
3900-C5-7B
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ISO
2808-7B
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NF
T30-125
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Model
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Description
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Range (μm)
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Measurement Steps (μm)
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Part Number
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Elcometer 3238/1
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Elcometer 3238 Long Edge Wet Film Comb
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50-120
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5
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K0003238M001
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Elcometer 3238/2
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Elcometer 3238 Long Edge Wet Film Comb
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25-600
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25
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K0003238M002
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Elcometer 3238/3
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Elcometer 3238 Long Edge Wet Film Comb
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50-1200
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50
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K0003238M003
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Elcometer 3238/4
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Set of 3 Long Edge Wet Film Comb (Scales 1, 2 and 3)
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K0003238M004
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