
the following are the list of top heat detector manufacturers :
- esser fire alarm system in Germany
- Honeywell Gent in United Kingdom
- simplex fire alarm system in United State
- notifier fire alarm system in United State
- system sensor company in United State
- Eaton fire alarm in United State
- zeta alarms ltd in United Kingdom
- hochiki fire alarm in United state
- protectowire company in United State
- fire lite in united State
- panasonic fire & security europe ab in Sweden
- PineTree Fire alarm in India
- ARTON fire alarm in Ukraine
- eds elektronik in Turkey
- Ningbo Peasway Electronics Co Ltd in China
- horing lih industrial co ltd in Taiwan
- Schrack Seconet in Austria
- eurotech fire alarm in United Kingdom
- ctec fire alarm in United Kingdom
- Textel Technologies Pvt. Ltd in India
- Codesec Fire Detection and Control Systems in Turkey
- DMtech Ltd in Bulgaria
- Numens Ambest Electronics Co. Ltd in China
- Ningbo Sentek Electronics Co. Ltd in China
- Ampac Pty Ltd in Australia
- Thermocable (Flexible Elements) Ltd in United Kingdom
- Linesense Fire Detection Ltd in United Kingdom
- Senkox Technologies Inc in United State
- Nohmi Bosai Limited in Japan
Heat detectors are the oldest type of automatic fire detection device. Not considered direct Life Safety devices, these detectors do contribute to the detection of a fire :
- Fixed Detectors alarm when the sensing element reaches a certain set point. Two common ones have 135 and 200-degrees F range. The Fixed element is generally a non-restorable type, and when activated, must be replaced.
- Rate-of-Rise Detectors respond when the rate of temperature increase is greater than an allowable limit (15 degrees in 60 secs.) (placement in a stable environment) (e.g.. ovens, heating vents, etc.). The Rate-of-Rise element is restorable when conditions return to normal.
- Rate Compensation will respond regardless of the rate of temperature rise.