Before revision: Noted ManufacturersESP Safety Inc. References Explosive atmospheres – Part 29-4: Gas detectors – Performance requirements of open-path detectors for flammable gases; IEC 60079-29-4 Explosive atmospheres.
After revision: References Explosive atmospheres – Part 29-4: Gas detectors – Performance requirements of open-path detectors for flammable gases; IEC 60079-29-4 Explosive atmospheres.