What does a fire detector detects?

Question Posted / gautam_etrx.engg

4 Answers
8474 Views
GAIL, I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

What does a fire detector detects?..

Answer / andy

electro-catalytic detectors detects change in resistance
whereas ir-type detectors detects changes in intensity of IR
spectrum and alerts the system whenever they detects a fire

Is This Answer Correct ?

2 Yes

0 No

What does a fire detector detects?..

Answer / gautam_etrx.engg

Ultraviolet rays (Earlier it was infrared rays)

Is This Answer Correct ?

2 Yes

1 No

What does a fire detector detects?..

Answer / faiyaz

Fire detector detect the fire like UV-ultra violet ray and IR means Infra ray both are fire one is small fire and one is big fire generally used in Hazard area like compressor and condensate area

Is This Answer Correct ?

0 Yes

0 No

What does a fire detector detects?..

Answer / saumyajit

in fire detectors normally we use photo resistors,which is used in wheatstone bridge circuit,in photo resistor conductivity changes as light intensity change.or we cud use photo diodes.(PN-diode,PIN-diode,avelanche diode)

Is This Answer Correct ?

0 Yes

1 No

Post New Answer

More Instrumentation Interview Questions

what5 does intrinsically safe mean.

2 Answers

For crude application in floating roof tank, how to calibrate a DP Transmitter? How is the floating roof weight considered?

0 Answers

Can be operate control valve without positioning if yes ? how and why?

4 Answers Focus,

WHAT IS THE Differance b/w on/off & pid control valve?

10 Answers

1 bar is equal to how many pound per square inch(psi)?

14 Answers Essar,

What is standard of DCS panel design?and what is step of DCS panel design?wiring and type of connector(screw or DB connector)

0 Answers

EXPLAIN PROPOTIONAL INTEGRAL DERIVATIVE CONTROL ACTION?

1 Answers

Senior engineer's please help me, what is Loop Checking and Loop test? and write difference also? soon urgent

0 Answers Kentz,

Explain signal isolator

0 Answers

generally transmitter power supply having some range(12v to 35v) but the out put(4-20 mA) must same for given input.If we vary the power supply voltage then output mA also to be change according to V=IR. Is there any voltage regulator in the transmitter ?

1 Answers Indian Steel,

What is the diffrence between ff tx and non ff tx

0 Answers Jindal, Rosemount,

if found error in magnetic flow meter?how can we adjust?

2 Answers ANI Instruments, Techint,

For more Instrumentation Interview Questions Click Here