QPS - Explosion Research Ltd

Hazardous Location Certification for Canada and the USA

 

 

Intrinsically safe standard 60079-11

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Environment

 

Explosion Risk

MPL (Minimum Protection Level)

Zone

Ex code

 

Minimum protection technique

Description

II  (gas)

Explosive gas > 1000 hrs/yr

Ga

0

Ex ia

Intrinsic safety

Whereas the electrical circuit(s) cannot produce enough energy under any two independent internal faults. It often requires quite a bit of analysis to do this.

II  (gas)

Explosive gas 10 to 1000 hrs/yr

Gb

1

Ex ib

Intrinsic safety

Whereas the electrical circuit(s) cannot produce enough energy under any two independent internal faults. It often requires quite a bit of analysis to do this.