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Timeline for Making a device explosion proof

Current License: CC BY-SA 4.0

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Feb 5, 2019 at 11:45 comment added Andy aka @MahmoudRagab what pericynthion might be alluding to is that a design for a piece of handheld portable equipment may be subject to a more stringent Ex classification because it may get used (contrary to handbook instructions and labeling) in a zone where the average probability of an ignitable gas and oxygen mix is higher than that of a home.
Feb 4, 2019 at 22:29 comment added Mahmoud Ragab @pericynthion Here I am taking about unit designed to be installed inside the home permanently and not portable units, however what will be wrong about taking the device from one home to another ?
Feb 3, 2019 at 21:17 comment added pericynthion The OP said "for use in homes", which could be subtly different from "for use in the home". e.g. Perhaps they are designing a piece of portable survey equipment to be used by gas company technicians responding to calls from customers who think they smell a gas leak. If that were the case, one of the Ex categories could certainly be applicable. Perhaps @MahmoudRagab can clarify.
Feb 3, 2019 at 9:59 comment added Andy aka As I said in my answer, a gas leak detector improves safety so, providing it has been reasonably well designed, it is a net benefit to the environment. I can't assess a design remotely on minimal documentation.
Feb 2, 2019 at 21:51 comment added Mahmoud Ragab Thanks alot ,my concern was that a spark might be initiated when the buzzers turn on and off, but I saw this photo of a chinese device where it has a lot of windows in the outer casing and the whole circuit can be in contact with the gas as it flows inside,is such a design safe? ae01.alicdn.com/kf/UTB8bI1BG5aMiuJk43PTq6ySmXXaP.jpg
Feb 2, 2019 at 18:43 history answered Andy aka CC BY-SA 4.0