GB/T 20730.2-2019 in English

This standard provides guidelines for the inspection and routine testing of industrial process control system instruments that use analog input and two or more output functions. It outlines the procedures and methods necessary to ensure the reliability and performance of such instruments during their operational life. The document covers the requirements for testing under various conditions and specifies the criteria for determining compliance with the established standards. It also includes details on the frequency and scope of testing activities to maintain consistent quality and functionality. The standard aims to support manufacturers and users in maintaining the accuracy and stability of the instruments through systematic evaluation processes.