Wet Film Thickness Wheel
A calibrated wheel with eccentric rim is rolled across the film to determine thickness. Available in 4 standard ranges, 0-100µm, 0-200µm, 0-500µm, 0-1000µm.
Other ranges also offered as required.
Complies with BS3900, C5 ISO 2808, ASTM D1212-91
INTRODUCTION
This is a simple instrument which performs a very important job. The thickness of any paint film is a critical
factor affecting the eventual performance of the finished scheme and must be carefully controlled. Too little
paint will result in premature breakdown of the film whilst too much paint would be expensive. The wheel type
gauge illustrated is an effective way of determining the film thickness in the wet stage immediately after
application.
DESCRIPTION
The instrument has three rims, the inner rim being eccentric to the two outer rims. At zero the three rims are in
line; at any position the level of the inner rim will be the scale distance below the plane of the outer rims.
METHOD OF USE
Immediately after application of the paint, the Wet Film Thickness Gauge is placed on the surface at the point
where the gap between the inner and outer rim is greatest. It is then rolled along until zero point, i.e. where the
inner and outer rims are in line, is in contact with the surface. Examination of the inner rim will show a point at
which pick-up of the paint began. The scale reading on the outer rim shown against this point represents the
Wet Film Thickness of the paint.
The scaling of the gauges is now in microns and the following ranges are standard :-
Ref. 1109/100 - 100mm
Ref. 1109/200 - 200mm
Ref. 1109/500 - 500mm
Ref. 1109/1000 - 1000mm
Care must be taken to select the gauge with the appropriate range when carrying out a test.
Gauges conform with British Standard Specification BS. 3900 Part C5 / ISO 2808 – Method 7A, ASTM D1212
Method ‘A’.
We can supply calibration certificates if requested at the time of ordering.
Wet Film Comb Gauges
Complies with ASTM D4414; BS 3900: C5; IS0 2808
INTRODUCTION
These simple inexpensive comb gauges provide a useful aid to checking the depth of a coating of paint, enamel lacquer, adhesive or other material that has been applied to a smooth surface.
DESCRIPTION
The combs are precision-ground in stainless steel, supplied in a credit card size wallet and are easily cleaned in an appropriate solvent with no risk or damage. A set of three gauges provides an overall range of 0 – 1200 mm ( 0 – 48 thou or mils ) as follows :
RANGE STEP GRADUATION
1. 5 – 120 mm ( 0 – 5 thou ) 5 mm
2 25 – 600 mm ( 0 – 24 thou ) 25 mm DIMENSIONS 60 x 30 x 2mm each
3. 50 – 1200 mm ( 0 – 48 thou ) 50 mm WEIGHT 22 grams each
Conforms with ASTM D4414 - Procedure ‘A’, BS3900 - Part C5, ISO 2808 - Method 7B
METHOD OF USE
1. Select appropriate comb according to approximate known thickness.
2. Hold comb perpendicular to surface coating to be measured.
3. Press into coating until the comb stands square on substrate.
4. Wet film thickness is between the highest step which is coated and the next ( higher ) step which remains
uncoated.
NOTE : We would be pleased to supply quantity orders with your company logo stamped on the wallet at a
reduced price.
ORDERING INFORMATION
Ref. 1115/120 5-120 mm No.1 Comb Gauge
Ref. 1115/600 25-600 mm No.2 Comb Gauge
Ref. 1115/1200 50-1200 mm No.3 Comb Gauge
Ref. 1115/3 Set of Combs including wallet
Owing to continuous development, we reserve the right to introduce improvements and modify specifications without prior notice.
For more information, please visit : http://www.sheeninstruments.com/products/coating-thickness/wet-film/comb-gauges.htm
Subscribe to:
Posts (Atom)