I am looking at one of the specifications asking us to implement Asi bus in Hazardous area, where filed mounted ON-OFF valves are in ZONE 1,Group IIA/IIB). As Asi bus carries power & the valves are used for monitoring & control of process,I am not sure 1)whether Asi bus system is suitable for ZONE 1,Group IIA/IIB for monitoring & control of ON-OFF Valve that are frequently operated 2)

If suitable,how to make it suitable & what specific components are to be chosen. I mean if we locate Asi Master/Slaves in this area,what additional features are to be specified/considered while designing to conform to ZONE 1,Group IIA/IIB

As per my knowledge ATEX certification was designed with electrical equipment in mind, and in general applies to electrical and electronic products where ignition of combustible gases and dusts might occur.And this in turn requires compilation and submission of a technical file in a sealed package to a Notified Body for storage of the file for category 2 non-electrical equipment.