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