Greg Kessinger, SET, CFPS, can be reached at Greg@firealarm.org or www.FireAlarm.org.
Basic Construction of Linear Sensing
1. Various outer jackets suitable for different environmental conditions
2. Material ‘wrap’ which provides additional protection for the inner conductors of the detector
3. Heat-sensitive polymer which coats the inner conductors
4. A twisted pair of steel conductors to comprise the core