Hello frnds.
Can any one tell me if there are SAFE PLCs which can work in highly inflameable area like that of LPG filling.
Are there PLCs which can work on practically zero potential.

Thanks In advance

Ok.
Guardlogix of Rockwell Automation.

But PLC need to be install in Exp type cabinet, based on under Zone area classification. Hence most of the PLC will suitable for your need, such as Tricon, GeFaunc, Allen Bradely, Simens, Modicon, etc