Optical beam smoke detector

An optical beam smoke detector is a device that uses a projected beam of light to detect smoke across large areas, typically as an indicator of fire. They are used to detect fires in buildings where standard point smoke detectors would either be uneconomical or restricted for use by the height of the building. What can this smoke detector do?

How does optical smoke alarms work? Do smoke detectors use infrared rays? Reflected Beam Smoke Detectors are designed for spacious rooms, open areas, and high ceilings. With only one device to install and align, these single-ended optical beam solutions saves you time and money on large area applications.

Generic optical beam smoke detector with transmitter and reflector. Because the beam is transmitting IR frequencies in only one direction, the reflected signal. Do NOT position Detector where personnel or objects can enter beam path Do NOT position two Detectors facing each other Do NOT install the Detector or Reflector in environments where condensation or icing are likely to occur For ranges between 5m and 50m, use a 50m Detector with Reflector.

This area is limited by applicable standards and national codes. SenseTek is also distributor of the FFE optical beam and smoke detectors. Beam fire and smoke detection systems are an excellent option when standard point smoke detectors would be uneconomical to implement, or when large spaces and high rooms would render them too slow to detect fires safely.

It is uniquely suited for protecting large open areas with high ceilings, where spot-type smoke detectors are difficult to install and maintain. This detector offers cost effective protection of large, open area spaces with high ceilings. Firstly lets look at other forms of detection that are typically used and why we would choose beam detection in their place.

An optical smoke alarm (also called photo-electric smoke alarm ) works using the light scatter principle. In addition, each system controller houses two pairs of fire and fault relays, one per detector. The Fire Beam Company Ltd. It is particularly suitable for protection of premises where smoke appearance is expected in the first phase of the fire and where installation of a large number of point smoke detectors would be necessary due to a large area. Ideal applications include warehouses, atriums, aircraft hangers, sporting arenas and concert halls.

Beam Detectors are used to provide “open area” smoke detection in situations where it is either impractical or not cost effective to use traditional point-type. By using advanced dual wavelength projected beams and optical imaging technology for early warning smoke detection , OSID provides a low-cost, reliable and easy-to-install solution that overcomes typical beam detection issues such as false alarm incidents and alignment difficulties. Due to the operational nature of flame detectors it is generally recommended to fit just one detector per zone. Ionization detectors are more sensitive to the flaming stage of fires than optical detectors , while optical detectors are more sensitive to fires in the early smouldering stage.

An example use may be within a fire detection and alarm system. When smoke particles are present in large quantities in the air, the beam of light becomes scattered and consequently, some rays fall on the photoelectric sensor and triggers the alarm in the smoke detector. It is especially suitable for protection of premises where, in the first phase of the fire, smoke appearance is expected and in which, due to a large space area, installation of a greater number of spot smoke detectors would be necessary. Optical beam smoke detectors.

Beam detectors also sense when smoke builds up over a distance. Projected beam detectors project an infrared light beam to a receiver, activating if the beam path contains smoke for more than eight to seconds. One of the most prominent advantages of this type of detector. According to NFPA, these alarm types are more effective at sounding when a fire originates from a smoldering source, like a lit cigarette that falls into a couch cushion.

Smoke particles, especially those by-products of an early fire, are extremely small, hence the need for the high sensitivity of the laser. Dust particles, on the other han are a different story. In some smoke detectors , dust can settle in the dark-ened chamber.