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An optical beam smoke detector is a device that uses a projected beam of light to detect smoke across large areas, [1] typically as an indicator of fire. [2] They are used to detect fires in buildings where standard point smoke detectors would either be uneconomical [ 3 ] or restricted for use by the height of the building.
Mine detectors: A portable, hand-held or worn device to detect buried IEDs. There are many different models from several different companies currently in use worldwide by U.S. and coalition forces. There are many different models from several different companies currently in use worldwide by U.S. and coalition forces.
Conceptual through-beam system to detect unauthorized access to a secure door. If the beam is interrupted, the detector triggers an alarm. A photoelectric sensor is a device used to determine the distance, absence, or presence of an object by using a light transmitter, often infrared, and a photoelectric receiver. They are largely used in ...
For smoke detectors according to EN 54-7 and fire detectors with smoke sensor (parts 12, 20 and 30 of EN 54) the test fires TF2, TF3, TF4 and TF5 are used. The EN 54-20 defines the following test fires with reduced fuel quantity for aspirating smoke detectors with enhanced or very high sensitivity (class A or B):
Broadcast Enterprises and Affiliated Media, Inc. (BEAM) is a telecommunications company in the Philippines with primary focus on UHF broadcasting and digital terrestrial television for the convergence of multimedia. [1] It is owned by Bethlehem Holdings, Inc., a media investment company of Globe Telecom through its Retirement Fund group. [2]
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Philippines: Semi-automatic pistol.45 ACP: TAC Ultra FS HC 45 ACP: 3,000 acquired by Armed Forces of the Philippines in 2017, for issue to all service branches. Majority went to the Philippine Army. [101] [102] AFP ordered 60,000 units under AFP 0.45 caliber Hammer Fired Pistol acquisition project, majority expected to go to the Philippine Army ...
An aspirating smoke detector (ASD) is a system used in active fire protection, consisting of a central detection unit which draws air through a network of pipes to detect smoke. [1] The sampling chamber is based on a nephelometer that detects the presence of smoke particles suspended in air by detecting the light scattered by them in the chamber.