Fire Alarm Expert: Advancements in Linear Heat Detection Technology

Greg Kessinger, SET, CFPS, can be reached at Greg@firealarm.org or www.FireAlarm.org.

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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