Nnnn601p-m optical smoke detector pdf files

The alarm contains a pulsed infra red led which pulses a beam of light into the sensor chamber every 10 seconds to check for smoke particles. This smoke detector is designed to give early warning of developing fires with an alarm sound from its builtin siren. The series 65 optical smoke detector has a moulded selfextinguishing white polycarbonate case with wind resistant smoke inlets. The salwico dos3 n1115 is a low profile conventional optical smoke detector designed to combine optimal response to smoke with a strong immunity to false and unwanted alarms. Please check out the similar products section for alternatives. The photoelectric optical smoke detector was invented by donald steele and. Principles of asa firedetection technology whitepapaer siemens. Normally, the phototransistor inside the sensor is in active state and therefore the base terminal of transistor t1 is at a low potential. Maintaining a complete file of information on the alarm system in a. Before installation verify the proper wiring and base are firmly mounted to prevent detector. Fap420fah420 automatic fire detectors lsn improved version.

Circuit of optical smoke detector resistor r1 limits the current through the led inside the sensor. Fire detection overview cfaa technical seminar 2019. Mr601tex intrinsically safe enhanced optical smoke. Optical smoke detector detailed circuit diagram available. This parameter, known as the response threshold value, is normally measured in a smoke tunnel and is defined in terms of the obscuration produced by the smoke over a one metre path. Optical only detectors are not suitable for detecting fast burning fires producing little visible smoke or very black smoke. Series 65 optical smoke detector by apollo fire detectors ltd. The sensing technology used is radically different from previous optical detectors and significantly reduces false alarms. Correct installation and maintenance of smoke detectors prevents unwanted nuisance alarms.

An optical smoke alarm also called photoelectric smoke alarm works using the light scatter principle. This tyco smoke detector is particularly suitable for general applications and areas where cable overheating may occur, e. White paper principles of asa firedetection technology june 2012. Fire alarm systems fap420fah420 automatic fire detectors lsn improved version. The orbis optical smoke detector operates on the wellestablished light scatter principle. Detector installation the intelligent optical smoke detector should be installed in compliance with all local codes having a jurisdiction in your area or nfpa 72 national fire alarm code, nfpa 70 national electrical code, bs 5389 and en54. When mounted on a flat ceiling, smoke detection devices have an individual. Orbis optical smoke detector by apollo fire detectors ltd. The sensing element of a smoke detection device optical smoke chamber.

The simplisafe smoke detector sssd1 is a photoelectric smoke detector, designed to sense smoke that comes into the detector chamber. Apollo fire detectors ltd hasnt formatted technical specifications for series 65 optical smoke detector yet. A smoke detector is a device that senses smoke, typically as an indicator of fire. The sensor employs an alarm verification function which requires two successive pulses before an alarm is given.