Re: Gents Flame Proof Clock
PJL,
Sorry to disagree.
Flameproof (Ex d) equipment will not allow flame or hot gas to pass from its interior to the potentially hazardous external atmosphere in which it is used. It is one of several techniques used to prevent igntion of hazardous atmospheres.
Intrinsic safety (Ex i) is a technique which depends on the equipment being designed and constructed to be incapable of supplying sufficient energy to cause a fire or explosion under the assessed conditions and in relation to the likely hazardous flammable material.
PMM
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