Certification strategy should be chosen early: target markets (EU, UK, North America, global IECEx) determine which conformity modules and NRTL listings you pursue.
This article highlights considerations for Class II Locations: Combustible Dust in the NEC Context under area classification themes. It is educational and not a substitute for project-specific standards, certificates, or AHJ rulings.
IEC 60079-0 establishes general construction and testing requirements; part-specific standards (60079-1, 60079-7, 60079-11, etc.) add detailed rules for each type of protection.
Wireless, Ethernet-APL, and battery-powered devices need the same EPL and protection concept discipline as conventional fixed installations.
Functional safety (SIL) layers may coexist with Ex equipment; independence and failure modes must be documented for both process safety and electrical protection.
Map your equipment EPL and type of protection to the classified area, then verify installation conditions of use, cable entries, grounding, and maintenance intervals. Keep declarations and certificates version-controlled.
For DHA support, EMC planning, or equipment design aligned to IEC 60079, reach out to HazloLabs for a structured review.