IS 9249 Pt.1-1979

标准号：IS 9249 Pt.1-1979
发布日期：1980/2/1 12:00:00
实施日期：1999/12/31 12:00:00
适用范围：1.1 This standard ( Part I) covers common safety requirements and tests for compliance to the following electrical and electrically operated measuring instruments:a) Direct acting indicating instruments;b) Direct acting recording instruments;c) Indirect acting instruments; andd) Certain accessories used with these instruments.1.1.1 This standard does not cover special requirements for instruments for use in particular environmental conditions, such as weather-proof, shock-proof, explosion-proof, vibration-proof instruments, intrinsically safe instruments or instruments for medical application.1.1.2 This standard also does not cover requirements other than safet-requirements of indicating and recording instruments.