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2025-07-21 15:35

The designer designed a flameproof analyzer, listen to the manufacturer, the safety type is intrinsically safe. The instrument engineer thought: Ah? It's intrinsically safe, it's so safe, it's cheaper, why not use intrinsically safe? The intrinsically safe type has a higher safety rating than the flameproof type, which must be no problem! So Yangshan submitted the requirements, XXX this safety analyzer.

Results just installed, encountered inspection, inspection experts said: this analyzer installed in the 1 zone, the safety ic level does not meet the requirements. Must use Intrinsic safety ia or ib, or flameproof type! Rectify immediately! Engineers are dumbfounded ~ This ampoule is higher than flameproof explosion-proof rating? Why can't it work? Today we will help you to solve the confusion, talk about Ben safe and flameproof!

Are intrinsically safe instruments more protected than flameproof instruments?

Intrinsically safe and flameproof are different types of explosion protection. This type is divided into three protection levels: ia, ib, and ic, and the corresponding EPL level (device protection level) is different. For example, intrinsically safe ic has a lower protection level than flameproof d, and intrinsically safe ia has a higher protection level than flameproof d. (For details, see the following table "Correspondence between explosion-proof types and EPL".

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