IS 9249 : Part 1 : 1979 Safety requirements for indicating and recording electrical measuring instruments and their accessories: Part 1 Common safety requirements for instruments

1. Scope

1.1 This standard ( Part I) cOVlfrs 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, shockproof, explosion-proof, \ibration-proof instruments, intrinsically safe instruments or instruments for medical application.

1.1.2 This standard also does not cover requirements other than safety requirements of indicating and recording instruments.