GB/T 7352-2008

This standard specifies the technical requirements, test methods, and inspection rules for electrical measuring systems and instruments that utilize ionizing radiation sources, such as those used in thickness gauges, level meters, and density meters. It is applied in industrial process control and quality assurance environments where non-contact measurement of material properties is required, particularly in manufacturing sectors like metallurgy, papermaking, and chemical processing. The standard ensures the accuracy, safety, and reliability of these instruments under specified radiation and electrical conditions.