Question:

These systems monitor the production of certain spectrums of light produced by fire, one of these systems monitors infrared light while others monitor ultraviolet light produced by the fire. Identify the type of detector.

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Flame detectors = detect light from flames; smoke detectors = detect particles.
  • Light Emission Diode
  • Heat Detector
  • Smoke Detector
  • Flame Detector
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The Correct Option is D

Solution and Explanation

Flame detectors are used to detect fire by sensing the light produced by flames.
They can detect ultraviolet (UV) or infrared (IR) radiation emitted by combustion.
Light Emission Diode (LED) is a light source, not a detector.
Heat detectors respond to temperature changes, not light.
Smoke detectors sense particles in the air, not light spectrums.
Therefore, the correct answer is Flame Detector.
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