A 'heat sensing tube' is a flexible, non-metallic tube used in fire detection and suppression systems to provide continuous temperature monitoring along its entire length. It is filled with pressurized gas or air and designed to rupture or activate when exposed to a specific temperature, typically caused by fire or overheating. When the tube bursts at the hottest point, the resulting pressure drop triggers an alarm or activates a fire suppression system, allowing for rapid and localized fire response. Heat sensing tubes operate without electricity, making them highly reliable in harsh environments such as electrical panels, engine compartments, data centers, and industrial machinery.
