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UL 60079-29-4 Ed. 1-2018
Explosive Atmospheres - Part 29-4: Gas Detectors - Performance Requirements of Open Path Detectors for Flammable Gases - Published Date: December 15, 2022
Adoption of IEC 60079-29-4, Explosive Atmospheres – Part 29-4: Gas Detectors – Performance Requirements of Open Path Detectors for Flammable Gases (first edition issued by IEC November 2009) as a new IEC-based UL standard, UL 60079-29-4 with US Differences. As noted in the Commitment for Amendments statement located on the back side of the title page, UL and FM are committed to updating this harmonized standard jointly. The new requirements are substantially in accordance with Proposal(s) on this subject dated November 17, 2017 and February 16, 2018.
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