What is the function of a heat detector in a fire alarm system?

A heat detector serves a crucial role in a fire alarm system by detecting temperature increases that are indicative of a fire. When a fire occurs, it typically generates heat as a result of combustion. Heat detectors are designed to sense this rise in temperature or specific temperature thresholds, alerting the fire alarm system and allowing for a timely response.

They play an essential part in fire safety by providing early warning, which can be vital for evacuating a building and initiating fire suppression efforts. Heat detectors are particularly effective in environments where smoke detectors might produce false alarms, such as kitchens or warehouses with significant dust or steam. By focusing solely on temperature changes, heat detectors offer a reliable means of identifying a potential fire before it poses a greater risk.

Understanding their function emphasizes the importance of integrating various types of detectors (such as heat and smoke detectors) to ensure comprehensive fire detection systems.