What is the difference between fire detector and smoke
detector?
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.
Is This Answer Correct ? | 18 Yes | 3 No |
Post New Answer View All Answers
What is motion balance principle?
WHY THE DEGREE OF VALVE PLUG AND VALVE SEAT IS SLIGTLY DIFFERENT I CONTROL VALVE TRIM DESIGN
Hi i m B.E. In elect. & comm. I m workin in bio mass plant from 6 mnths as inst. Engg. but now i m in dept. Of operation as shift engg...which is best operation or inst. 4 me? M confusd..plz help and reply me..
Why boiler chimney area oxyden sensor fixing?
Using your own examples solve a problem involving normal table. (experimental method and analysis)
how to calibrate corollaries (Mass flow meter)?
Positioner usage.
What is stripper & spilitter ? Diffrence in this.?
What is standard of DCS panel design?and what is step of DCS panel design?wiring and type of connector(screw or DB connector)
can anyone tell me about the basic concepts to consider before to start a PLC panel wiring
In power plant to measure vibration of a turbine we install sensors. Before install this sensor we have to set gap voltage. What is meant by gap voltage and its use?
What are the type of bonnets in the control valves?
if my flow is 20000 m3/h than which range of DPT i have to use????
What is the use of GMV in turbine?
What is the difference between ff transmitter and non ff transmitter