smoke detector types pdf

Mount detector base (all base types) on an electrical backbox which is at least 1.5" (3.81 cm) deep. An ionization smoke detector uses ions, or electrically charged particles, to help detect smoke in the air. These detectors utilize one (or both) of two principles below; a. Optical or Photoelectric smoke detectors and Ionization smoke detectors. When smoke enters the chamber, it disrupts the flow of ions, thus reducing the flow of current and activating the alarm. SMOKE ALARM LEGISLATION Ver 08/2020 EXISTING DWELLINGS FOR OWNERS / OCCUPIERS From 1 January 2017 From 1 January 2027 When replacing smoke alarms, they must be of a photoelectric type which complies with Australian Standard (AS) 3786-2014. An ionisation type smoke detector is the earliest form of smoke detection originally developed by Swiss physicist Walter Jaeger in 1930. It is important that your home is protected from smoke, fire, carbon monoxide and gas. Smoke Detectors 101 - Different Types of Detectors. a. Ionisation Smoke Detector. Tyco conventional detector design evolution has resulted in the creation of the Series 600 range of unobtrusively styled detectors...more. Hazardous Area Detectors - Addressable. This guide highlights the types of smoke detectors and carbon monoxide alarms that are available. x�}��n�0��. Share 0. Heat Detectors. Most homeowners don't know that smoke detectors come in two types: ionization smoke detectors and photoelectric smoke detectors. In this article, though, we’ll be focusing mainly on residential smoke alarms. 0000001671 00000 n Point Smoke Detectors. Download this chart on ionization smoke alarms (PDF, 943 KB). 0000003032 00000 n Experts say photoelectric smoke detectors generally won’t cause as many false alarms, but for the ultimate in safety, they recommend opting for a smoke detector with both types of sensors. Ze�[�Z_ނ^\O~�`�p@- �J,#?p�@��+ȗ~ �b+�5��$��$�Χ5n����Z��lk�t�9;�k�Ovt�ʴ��{:S����QW*qQ��6��UZ����Z��åO%��S��$�\��q���4E����{58_Qgަ�P�N5���>m8�{9������}0�*�3>�vk(�vk8��j�[#���e?p�~ ���?MF�egp{:����������l�¶��l=���O(_x@�`��}��� �Z�IjS���{�~O��ز�ݒ�m�lm�F`�5`J�S�L�o�3�MP����μO���*EO&"�'�0� 0000051312 00000 n First, decide if you need a hardwired, battery operated or plug-in alarm. Photoelectric Photoelectric smoke detectors contain a light and a sensor that are at 90-degree angles to one another. End to End 8 1.4.2. 0000002378 00000 n When smoke enters the detector chamber, a photoelectric type detects sudden scattering of light, whereas an ionization type detects the change of electrical current flow that triggers the signal - indicating the presence of smoke. Smoke involves the thermal release of large quantities of solid and liquid particles into the surrounding atmosphere. Types of Smoke Alarms 01 DFES recommends photoelectric smoke alarms There are two main types of smoke alarms, with the difference being their smoke sensing technology. Smoke Sensor Battery Type Latching Alarm Indicator End-of-Life Signal Single Test/ Silence Button Limited Warranty 120V Direct Wire With Battery Backup 9120B Ion 9V Carbon Zinc P 10 Years 9120AB Ion 9V Alkaline P 10 Years 9120LBL Ion 10-Year Lithium P 10 Years 3120B Ion/Photo Two AA Batteries P 10 Years Optical smoke detectors consists of a light source like LED and a light detector like photocell. Download this chart on ionization smoke alarms (PDF, 943 KB). Although any smoke alarm is better than none, fit both types of detector if you possibly can. 298 0 obj <> endobj You can think of it as an electronic nose because, like the nose on the front of your face, it uses a kind of chemistry to spot unusual molecules (smoke) heading inward. Built-in carbon monoxide detectors. 0000008136 00000 n The photocell conducts as … �@���.%�E�X,�A���Q�Aj���L��YJ�_�Lޡ6����oNz�$?��`���1K���7H330������%��� � �'� These technologies are called ionisation and photoelectric smoke sensors and they react differently to a fire. FSP-951 Series plug-in intelligent smoke detectors use a detach-able base to simplify installation, service and maintenance. The second type of smoke detector is photoelectric, which uses a light beam to help detect the presence of smoke. 0000007882 00000 n – One smoke alarm inside every bedroom. 10 2.1. A mechanical device that is sensitive to smoke or particular material in the air that transmits a signal to the measuring instrument. %%EOF In many cases, however, the location and sensitivity of the MAINTENANCE Always follow the manufacturer’s instructions and recommendations on how to maintain your smoke alarms. Download Full PDF Package. Ionization/Photoelectric Smoke Detector. Smoke enters the chamber, reflecting light onto the light sensor; triggering the alarm. Optical Beam Smoke Detector Types 8 1.4.1. The listed spacing for heat detectors is S = 50 ft. (15.3 m). 347 0 obj <>stream 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. 0000003110 00000 n Experts say photoelectric smoke detectors generally won’t cause as many false alarms, but for the ultimate in safety, they recommend opting for a smoke detector with both types of sensors. Use Both Types of Smoke Detectors, Experts Say Smoke detector use smoke as an indicator of fire powered by battery. 0000002185 00000 n Smoke Detector Addressable Input Module (Waterflow) Addressable Smoke Detector Addressable Relay Module (Fan Shutdown) Addressable Systems Each point on the SLC loop is given a unique address when installed. %%EOF The response of beam smoke detectors is generally less sensitive to the type and color of smoke. A smoke alarm uses one or both methods, sometimes with a heat detector, to warn of a fire. Somke detector project presentation 1. For a chart of compatible junction boxes, see DN-60054. Smoke Detector Addressable Input Module (Waterflow) Addressable Smoke Detector Addressable Relay Module (Fan Shutdown) Addressable Systems Each point on the SLC loop is given a unique address when installed. The sensor consists of a multiplying detector (usually Geiger Muller type ionization tube) mounted inside a metal casing with a quartz lens. Somke detector project presentation 1. ... of smoke particles An Actuator/Alarm to be triggered 7 TYPES OF SMOKE DETECTOR There are two types of smoke detectors Ionization smoke detector Photoelectric smoke detector Both works on different principles to sense visible or invisible particles of combustion in air given off developing fire. 0000002029 00000 n The smoke detector principle is an essential foundation for making decisions about when drugs can be used safely to relieve suffering and block defenses. 0000007370 00000 n 0000010619 00000 n These sirens can provide precious time to escape before a fire spreads. 0000016523 00000 n The detector may be set for different sensitivity settings appropriate to the environment of its location. This type of alarm is generally more responsive to a flaming fire, according to the NFPA. �o�E��V����BR��$�=�-����TǍB���;C�Ok:mvd��$�k��\ ]|���wmZ��%� �t�< Two basic types of smoke detectors are used today: ionization and photo- electric. h�b```a``jc`e`�Hdf@ a�+s41�_um\�� �hlW#n��n� , �. Note that photoelectric smoke detector packages are labeled with a “p.” How they work: Photoelectric-type alarms aim a light source into a sensing chamber at an angle away from the sensor. – One smoke alarm at the base of each stairway. Where is an Optical Beam Smoke Detector Used? (4.3.6) 3. Smoke entering the ionization chamber disrupts this current; the smoke particles attach to the ions and neutralize them. Installa-tion instructions are shipped with each detector. There are two types of smoke detectors. Artwork: How an ionization smoke detector works. 0000002995 00000 n Smoke Detector Operations: Ionization and Photoelectric . Figures 3 and 4 show the spac-ing for both the shed type and peaked type sloped ceilings On smooth ceilings, beam smoke detectors should gener-ally be mounted between 12 and 18 inches from the ceiling. detectors, namely: 1.The photoelectric smoke detector 2. Smoke alarms save lives. SMOKE DETECTOR A smoke detector is a device that senses smoke, typically as an indicator of fire.

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