Heat detector is a type of fire detection device that detects changes in temperature and triggers an alarm when the temperature reaches a predetermined threshold.
Heat detectors are designed to detect heat in areas where smoke detectors may be prone to false alarms, such as kitchens or high cooking activity areas.
They can be classified into two main categories: fixed temperature detectors and rate-of-rise detectors.
Fixed Temperature Heat Detector: These detectors are activated when the ambient temperature at the detector location reaches a predetermined fixed threshold. When the temperature surpasses this set point, the detector triggers an alarm signal. Fixed temperature heat detectors are simple and reliable but lack the ability to detect gradual temperature changes.
Rate-of-Rise Heat Detector: Rate-of-rise heat detectors are designed to detect rapid temperature increases. They have a built-in mechanism that measures how quickly the temperature is rising. If the rate of temperature rise exceeds a specified threshold, the detector activates an alarm. This type of heat detector is effective in situations where fires can develop rapidly, such as in areas with flammable materials.
- Boiler rooms
- Industrial facilities
- Elevator shafts
Standards and Certifications
- UL 521
- ISO 7240
- CE Marked
- CSA Certified
- ULC Listed
Also check out Ionization, Photoelectric Smoke Detector.