What is the difference between fire detector and smoke
detector?
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Answer Posted / srinivasansureshkumar
Fire: Fire is a phenoena of chemical process which occurs
when a fuel(source) gets ignited by heat(Motivator) and
cotinues in presence oxygen(sustainer).
** when a fire occurs the resultant products are smoke,
heat and light.
Smoke detectors: Smoke detectors detects the presence of
smoke and initiates an change in circuit to trigger an
alarm/smoke presence.
There are basically two main types of smoke detector used
for smoke detection they are (a) Ionisation type and (b)
Optic type(poto electric).
Fire Detectors: Detects the presence of Light, They come in
varieties in sensing elements such as LDR, Poto diode, etc..
When comes to the area of hydrocarbon fires, these fuels
have an tendency to emit ultraviolet(UV) and Infrared (IR)
light frequency wave lengths. so where UV, ir, UV/ir
detectors are used.
In Breif: Fire Detector detects the light and Smoke
detectors detcts the presence of smoke.
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