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Manufacturers : Safety and surveillance electronics : Fire detectors
Fire detector systems are finding increasing use for the protection of human life and of valuables. Facilities faced with a constant threat of fire, such as semiconductor fabrication plants, paint facilities, petrochemical facilities and refineries, co-generation plants, aircraft hangers, gas turbines and power plants, gas compressor stations, silane gas storage facilities, munitions plants, and airbag manufacturing plants typically require constant monitoring and response to fires and potential fire hazard situations. The fire detectors generally work by flame sensing, temperature sensing, or smoke particle sensing. A fire detector comprises a body in which are received fire detecting means to detect the appearance of a fire and electrical circuits to convert the output of the fire detecting means into electrical signals, and control and indicating equipment connected to the detectors via communication means. Fire detectors are most commonly attached to inner surfaces of buildings such as walls and ceilings. Since smoke and hot air rise the devices are preferably matched to the ceiling. Various types of fire detectors are known. Threre are thermal type detectors, ionization type detectors, photoelectric type detectors, light obscuration type detectors, and radiation type (flame) detectors. The photoelectric detector responds to changes in light transmission through a medium that contains smoke. Light emitted from the light emission section and then scattered or attenuated due to smoke stemming from a fire is received by a light reception section, converted into an electric signal, and sampled as a smoke detection signal proportional to the concentration of the smoke. The ionization smoke detector responds to changes in the conductivity of an ionized medium due to the presence of combustion products. Ionization smoke detectors are capable of detecting a fire at a sufficiently early stage to allow timely deployment of suitable fire-fighting means, especially for the protection of human life. Such systems may be designated as early-warning systems. Infrared (IR) detectors have basically two forms: active and passive. Passive IR detectors generally employ a group of radiation sensors coupled through amplifiers to a logic circuit. The radiation sensors detect changes in ambient infrared radiation. Active IR detectors include a radiation source and an IR sensor which is sensitive to interruptions in the radiation sensed from the source.

Listings on Safety and surveillance electronics : Fire detectors

  • Autronica Fire and Security
    Manufacturer and supplier of fire safety equipment including analogue addressable and interactive fire detection systems, interactive-addressable system for integrated fire and gas detection (integrated fire and gas detection system), voice alarm systems, emergency light systems and luminaires, presentation system for control and monitoring of alarmed areas, fire suppression systems, (including water mist systems, gaseous systems and foam systems). Norway.
    http://www.autronicafire.com
  • Apollo Fire Detectors Limited
    Manufacturer of conventional and analogue addressable smoke and heat detectors for commercial and industrial applications. Product range includes detectors and interfaces for conventional and analogue addressable systems (ionization smoke detector, heat detectors, multisensor detector, carbon monoxide detector, beam detector, flame detector, ) and a variety of bases and mounting accessories. UK.
    http://www.apollo-fire.co.uk
  • Hochiki Europe (UK) Ltd.
    Manufacturers of quality fire detectors for commercial and industrial applications, products include analogue addressable sensors, bases, modules, sounders and call points; conventional detectors, bases, sounder devices and call points (including marine approved and intrinsically safe ranges); head removal tools, heat detector tester poles, loop commissioning and emulation equipment and duct smoke detection equipment.
    http://www.hochikieurope.com
  • Notifier
    Manufacturer of commercial fire alarm systems and technology including fire alarm control panels, intelligent fire alarm network, fire and security integration platform, integrated systems platforms, peripheral devices for use with its fire alarm systems (intelligent sensors and control points, conventional initiating devices, and notification appliances), and accessories such as printers, remote annuncitors, auxiliary power supplies, battery chargers, and relays. USA.
    http://www.notifier.com
  • Talentum Developments
    Manufacturer of flame and spark detection equipment for applications where the risks of fire or explosion cannot be adequately covered by smoke or heat detectors, and flame sensors responding to low frequency (1 to 40Hz) flickering infra-red (IR) or visible radiation emitted from flames during combustion used to in power plant applications. UK.
    http://www.talentum.co.uk
  • The Protectowire Company, Inc.
    Manufacturer of linear heat detector, commercial fire alarm/releasing control panel, industrial fire control panel, heavy duty industrial fire control panel, graphic annunciators, batteries and battery cabinets, junction boxes, line resistor boxes, UV and IR flame detectors, photoelectric and ionization two wire smoke detectors, fixed temperature and rate anticipation heat detectors, single action and dual action manual alarm stations, horns, strobes, horn/strobe combinations, amplified speakers and heavey duty alarm bells in both indoor and weather proof models. USA.
    http://www.protectowire.com
  • Tyco Fire & Integrated Solutions
    Designs, installs and services fire detection, protection and suppression systems, integrated access control and CCTV surveillance systems and other integrated solutions. Products include fire detection systems, fire alarm monitoring products, portable extinguishers, specific building design and equipment, access control systems, CCTV systems, management and information systems, nurse call and communication systems, assault and intrusion alarm, traffic monitoring and public area surveillance solutions, oil & gas solutions.
    http://www.tycofis.com
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