The Elcometer 3230-1 Coil Coating Wet Film Wheels measure the wet film thickness of a coating during the coil coating process. They work on the same principle as the standard Elcometer 3230 Wet Film Wheel, but the outer wheels are knurled to allow measurements on slippery coatings or on fast moving substrates.

Measuring the film while it is still wet lets an applicator catch an out-of-specification coat immediately, before it cures, rather than reworking a dried film. The wheel has two outer wheels that rest on the substrate and an eccentric central wheel of smaller diameter. Rolling the gauge through the wet coating brings the central wheel into contact with the film, and the point on the scale where this happens indicates the thickness. When the volume to solids ratio of the coating is known, generally from the manufacturer's product data sheet, the wet film thickness can be used to predict the dry film thickness.

Two ranges are offered: part number K0003230M017 reads 0 to 50 microns in 2.5 micron graduations, and K0003230M018 reads 0 to 100 microns in 5.0 micron graduations, both to nominal values. Each wheel measures 50 x 30mm and weighs 220g, and is supplied with a storage case and operating instructions.

The Elcometer 3230-1 can be used in accordance with ASTM D 1212-A, AS/NZS 1580.107.3, BS 3900-C5-7A, ISO 2808-1B, ISO 2808-7A, JIS K 5600-1-7 and NF T30-125, the recognised wet film thickness standards. It is supplied by BAMR, South Africa's authorised Elcometer distributor.