This International Standard specifies a method for the nondestructive measurement of coating thicknesses using beta backscatter gauges. It applies to both metallic and non-metallic coatings on both metallic and non-metallic substrates. To employ this method, the atomic numbers or equivalent atomic numbers of the coating and the substrate must differ by an appropriate amount. CAUTION — Beta backscatter instruments used for the measurement of coating thicknesses employ a number of different radioactive sources. Although the activities of these sources are normally very low, they can present a hazard to health, if incorrectly handled. Therefore, all rules and regulations of local or national authorities must be observed.
SANS 3543-1981由ZA-SANS 发布于 1981-07-15,于 2008-11-14 废止。
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