I have a Rosemount flowmeter that carries both a nonincendive rating and an explosion proof rating. I am installing in class I div 2 area. The control drawing from the flowmeter manual calls for an "approved nonincendive supply". For they life of me I cannot find such a rating on my dcs or plc analog inputs. I would love to not have to seal and pack and pour, but with the control drawing being so clear what options do I have? Anyone have any ideas? Where would I even find a approved nonincendive supply...