fenwal heat detector wiring diagram   35 wiring diagram
{"Image DocumentName": "2. Detection Systems Fenwal Resistance Detector", "Image ImageDescription": "The Fenwal system is a type of continuous-loop fire detection system. It utilizes a metal Inconel tube with a nickel centre conductor. The nickel is insulated from the outer tube by ceramic beads coated with eutectic salts which have a resistance that varies with temperature. When a fire or overheat condition occurs the eutectic salt melts resulting in resistance reducing and current flows between the centre conductor and ground. As the system cools the eutectic salts will solidify returning to their original state.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}