Question:
Does anyone know if an explosion-proof duct smoke detector is made? I am needing the name of a manufacturer who makes one. An intrinsically safe unit might work. Would appreciate some help.

Answer: -Try ISI (Industrial Scientific Inc.) we use their Exposion proof L.E.L Detectors (Duct and Area) in my facilities HVAC system they may have something for Smoke (Probably an Infra-Red unit) in explosion proof.

-You may wish to try Detronics 6901 West 110th Street in Minneapolis, MN they have a web site at www.detronics.com They manufacture a classified area smoke detector, so a duct detector may also be available..