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New Smoke Alarm

Posted by scotsgal - Created: 4 years ago
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10 replies (Showing replies: 1 to 10)

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Posted by scotsgal - 4 years ago

It might be, but will take it back and see what happens with the new one, thanks for your reply

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Posted by Que si - 4 years ago

In the UK  labs, where I worked, our fire sensors used to regularly go off in the heat, without any obvious cause. It was eventually found that they were triggered by an influx of thunderbugs.

http://4.bp.blogspot.com/-eHgderTIg5A/TkrPE98-rQI/AAAAAAAABGI/P_ZHS0SA_GM/s1600/thunder+1.jpg

Those tiny black/dark brown flies that arrive on humid, hot days . 

Of course, the system was entirely different to your domestic alarm, but perhaps some small flies are triggering it?

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Posted by Fitter - 4 years ago

Ionisation-type of smoke detectors are forbidden in France. This is the type that goes off if you burn the toast.

http://detecteur-fumee-incendie-daaf.fr/detecteurs_daaf_agrees.html

The reason for the non-approval is the percieved risk during a fire or disposal of the minute radioactive source inside the detectors.  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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Posted by scotsgal - 4 years ago

No it is a smoke alarm and it does conform, thanks for your reply

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Posted by clarksinfrance - 4 years ago

MIght seem a silly question, but have you bought a smoke alarm, or a heat alarm? they work quite differently.

Good explanantion here:

http://www.fireservice.co.uk/safety/smoke-alarms

Should be heat alarm in kitchen, so burning toast doesn't set it off, but rise in heat does. Smoke alarms everywhere else.

As long as the alarm conforms to norme EN 14-604 it is ok.

http://www.detecteur-de-fumee.org/conseils-infos/detecteurs-de-fumees-la-norme-en-14-604/

Can't find any reference to ionisation smoke detectors being against regulations, but happy to be shown otherwise.

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Posted by scotsgal - 4 years ago

The one I bought was from leclerc so assume it is legal in France

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Posted by st.cyr - 4 years ago

Ionisation smoke detectors are not legal in France

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Posted by scotsgal - 4 years ago

Thank you emu for your reply, no showers, smoke or any of the others that I am aware of at the time it went off

 

Sabjack I think I will go with it being faulty, there is no dust in my house that I am admitting to

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Posted by No longer Online - 4 years ago

scotsgal, you either have a faulty one or dust has settled in it. Dust can set them off.

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Posted by Emu-408495 - 4 years ago

Smoke alarms apparently work by sensing ions in the air. When ionized air passes between the source and target, the signal is altered and the detector goes off. 

sources of ionized air are smoke, obviously, and high humidity (like from a hot shower) or a kettle, nearby thunderstorms, hair dryers, and static electricity can all ionize the air and set off the detector. 

I found this info on the net so have no idea how true it is but it sounds feasible.