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fatma saif
Active Contributor

Join Date: Apr 2009
Posts: 18

Fire Alarm

04/05/2010 1:12 PM

hi

how the fire alarm work?

and how its diagram?

please who can help me?
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RoySmith
Participant

Join Date: Oct 2008
Posts: 1
#1

Re: fire alarm

04/05/2010 1:25 PM

This may help

http://www.howstuffworks.com/home-improvement/household-safety/fire/smoke.htm

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Mohamed212
Participant

Join Date: Apr 2010
Posts: 1
#2

Re: fire alarm

04/05/2010 3:11 PM

Dear Fatma,

kindly Download the Fire Solutions and Guides to Fire Alarm System from any link from these links

http://www.4shared.com/file/257662544/e18ea5bc/Fire__Alarm.html

or

http://www.megaupload.com/?d=1MXF8UQX

or

http://www.mediafire.com/?y32mc3qzzzm

or

http://rapidshare.com/files/372376588/Fire__Alarm.rar.html

Best regards,

Eng 212
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fatma saif
Active Contributor

Join Date: Apr 2009
Posts: 18
#5
In reply to #2

Re: fire alarm

04/07/2010 3:17 PM

thanke u so much.

i like thise book.
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peterg7lyq
Guru

Join Date: Jan 2010
Posts: 2446
Good Answers: 60
#3

Re: fire alarm

04/05/2010 6:48 PM

Smoke or small particle sensing

Its either an optical one used mostly in factories, using infra red beam and sensing break in beam by smoke particles

or ionising used in houses very sensitive. uses very small radioactive material to ionise the air, and sensing smoke which changes the resistance

Heat sensing

ie bi metal strip.

liquid in glass tube ( used in sprinklers )

then look at links provided by the others
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PWSlack
Guru
United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

Join Date: Jan 2007
Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
Posts: 32175
Good Answers: 839
#4

Re: Fire Alarm

04/06/2010 3:01 AM

→ British Standard 5839.

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Users who posted comments:

fatma saif (1); Mohamed212 (1); peterg7lyq (1); PWSlack (1); RoySmith (1)

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