Fire Alarm
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. These alarms may be activated automatically from smoke detectors, and heat detectors or may also be activated via manual fire alarm activation devices such as manual call points or pull stations. Alarms can be either motorized bells or wall mountable sounders or horns. They can also be [(speaker strobes]) which sound an alarm, followed by a voice evacuation message which warns people inside the building not to use the elevators. Fire alarm sounders can be set to certain frequencies and different tones including low, medium and high, depending on the country and manufacturer of the device. Most fire alarm systems in Europe sound like a siren with alternating frequencies.
- Conventional Fire Alarm: A conventional system is a fire alarm that identifies the activated detector or manual call point by a zone LED, this is different to the text message shown on an LCD display used for on an addressable system.
- Addressable Fire Alarm: An addressable fire alarm system is made up of a series of fire detectors and devices that are connected back to a central control panel. With addressable systems, each device has an address or location, enabling the exact detector that was triggered to be quickly identified. This makes addressable alarm systems ideal for large buildings, particularly commercial premises spread over a wide area.
- Aspirating Smoke Detection: Aspirating Smoke Detection systems consist of one or more degree of alarm, usually configurable. This enables an Air Sampling Smoke Detection system to deliver extremely early notification of a situation, forcing inspection within the earliest smoldering phase of a fire enabling the fire to be effortlessly dealt with. Additional alarm stages can be set up to deliver fire alarm inputs to fire systems including activation fire Extinguishing systems. Air Sampling Smoke Detection alarm sensitivities are adjustable and can be designed to adjust to various levels starting from many, many times more susceptible than the usual traditional detector, to a reduced amount of sensitive. The detectors perform best within non-volatile conditions. They may also be applied in computer system cabinets to inform end users towards the getting hot of computer cabling or certain computer components.
Aspirating Smoke Detection
