Fire Alarm Systems by MAP Infra Engineers India Private Limited

A fire alarm system has a number of devices working together to detect and warn people through visual and audio appliances when smoke, fire, carbon monoxide or other emergencies are present.
Components of a fire consist of:

• Smoke (particulate and aerosol)
• Heat
• Light Radiation
• Fire detection devices are built to detect one or a combination of these components. While all components are necessary for a fire to exist, all components may not exist at a detectable threshold. Detectors will be selected that will detect the elements that may exist in a fire for the ambient conditions that are present. It also should be realized the similar non-fire components might exist in the same ambient conditions, which could cause unfavorable false alarm conditions.
• Devices used for fire detection include smoke detectors, thermal detectors, flame detectors, fire-gas detectors, and other devices.
• Smoke detectors sense visible or invisible particles of combustion generated by burning, smoldering, or the incipient stage of combustion. These devices fall into two categories -- photoelectric and ionization.
• Thermal detectors sense the high temperature or the temperature rise caused by a fire.
• Flame detectors sense the radiation produced by a fire.
• Fire-gas detectors sense the gases produced by a fire.
• Other detectors sense some phenomenon other than smoke, thermal, flame, or fire-gas to detect a fire.