ASTM D1212 PDF

The instrument consists of a spherical convex surface which is forced through the wet paint layer. An oversized circular paint spot is formed on the glass lens, corresponding to the sum of the thicknesses of both the original undisturbed paint film and the displaced paint film that wets the glass. A simple ratio has been assumed between these two variable thicknesses and used to construct the table furnished with the instrument. To make a wet film thickness measurement, the gauge is placed as soon as possible on a freshly painted surface and the lens is forced down as far as it will go. After the pressure is released, the gauge is removed from the surface and the diameter of the oversized circular spot is measured, to the nearest millimeter, directly on the scale engraved on the lens.

Author:Dusho Fezahn
Country:Puerto Rico
Language:English (Spanish)
Genre:Science
Published (Last):7 October 2017
Pages:41
PDF File Size:3.55 Mb
ePub File Size:10.15 Mb
ISBN:166-1-20137-163-6
Downloads:67203
Price:Free* [*Free Regsitration Required]
Uploader:Tusho



The instrument consists of a spherical convex surface which is forced through the wet paint layer. An oversized circular paint spot is formed on the glass lens, corresponding to the sum of the thicknesses of both the original undisturbed paint film and the displaced paint film that wets the glass. A simple ratio has been assumed between these two variable thicknesses and used to construct the table furnished with the instrument.

To make a wet film thickness measurement, the gauge is placed as soon as possible on a freshly painted surface and the lens is forced down as far as it will go. After the pressure is released, the gauge is removed from the surface and the diameter of the oversized circular spot is measured, to the nearest millimeter, directly on the scale engraved on the lens. By referring to the Table supplied with the Pfund Paint Film Gauge, the thickness of the paint film in either fractions of millimeters or in mils, as well as the number of square feet which would be covered by one gallon of paint at that same thickness, may be quickly determined.

The general plan of the Pfund Paint Film Gauge is shown in the diagram. A convex Lens L whose lower surface has a radius of curvature of mm is mounted in a short Tube T1 which slides freely in an outer notched Tube T2. The compression springs S keep the convex surface out of contact with the wet paint film until pressure is applied to the top of T1. Gardner and G. Sward, 13th Edition, Drum Handling. Film Flaws. Film Thickness. Lab Apparatus. Measuring Instruments.

Optical Instruments. Surface Profile. Surface Tension. Pfund Wet Film Thickness Gauge. Diameter of Spot mm. Formulas for Making Approximate Calculations.

ELAINE SHOWALTER TOWARD A FEMINIST POETICS PDF

Standard Test Methods for Measurement of Wet Film Thickness of Organic Coatings

Designation: D — 91 Reapproved Standard Test Methods for. A number in parentheses indicates the year of last reapproval. A superscript epsilon e indicates an editorial change since the last revision or reapproval. Two methods are described as follows:. The values given in parentheses are for information only. It is the responsibility of the user of this standard to establish appro- priate safety and health practices and determine the applica- bility of regulatory limitations prior to use.

A SUGGESTIVE INQUIRY INTO HERMETIC PHILOSOPHY AND ALCHEMY PDF

Pfund Wet Film Thickness Gauge

.

KSIAZE NIEZLOMNY PDF

Camada Umida ASTM D1212.pdf

.

HTTP WWW EBOOKSGRATUITS COM BLACKMASK VOLTAIRE CANDIDE PDF

ASTM D1212

.

Related Articles