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 history
2008SANS 3543:2008 Metallic and non-metallic coatings - Measurement of thickness - Beta backscatter method
1981SANS 3543:1981 Metallic and non-metallic coatings - Measurement of thickness - Beta backscatter method