IS/IEC 60079 : Part 29 : Sec 4 : 2009 : Explosive Atmospheres Part 29 Gas Detectors Section 4 Performance requirements of open path detectors for flammable gases

Reaffirmed 2024

NATIONAL FOREWORD

This Indian Standard (Part 29/Sec 4) which is identical with IEC 60079-29-4 : 2009 ‘Explosive atmospheres Part 29-4: Gas detectors — Performance requirements of open path detectors for flammable gases’ issued by the International Electrotechnical Commission (IEC) was adopted by the Bureau of Indian Standards on the recommendation of the Electrical Apparatus for Explosive Atmospheres Sectional Committee and approval of the Electrotechnical Division Council.

The text of the IEC Standard shall be approved as suitable for publication as an Indian Standard without deviations. Certain conventions are however not identical to those used in Indian Standards. Attention is particularly drawn to the following:

a) Wherever the words ‘International Standard’ appear referring to this standard, they should be read as ‘Indian Standard’.

b) Comma (,) has been used as a decimal marker while in Indian Standards, the current practice is to use a point (.) as the decimal marker.