Is a simple Zone 1 enough to identify your hazardous area location?

Certainly not. At least following data shall be added:
Zone 1 IIB T4.
What is defined by that way?

The environment of my installation shall fit into. Same is true for dust hazardous environment.
Remark: a hazardous area classification does always have an extension (3D). Relative density (in case of gas) has a meaning here.
Keep up good work.

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