IS 9249 Pt.1-1979 Instructing and recording safety requirements for electrical measuring instruments and their accessories Part Ⅰ General safety requirements for instruments
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; and
d) 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.
IS 9249 Pt.1-1979 history
1980IS 9249 Pt.1-1979 Instructing and recording safety requirements for electrical measuring instruments and their accessories Part Ⅰ General safety requirements for instruments