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- Smoke detectors work in two different ways, they are ionisation and photoelectric.
- The ionisation uses americium 241, a radioactive element, which gives off particles with an electric charge. These turn air molecules in the chamber into ions (charged atoms). These in turn buzz between two metal electrodes, allowing electricity to flow around the circuit. When smoke particles enter the chamber, they neutralise the ions and stops the current. The electronic circuit detects this and triggers the alarm.
- The photoelectric way is a bit simpler as it uses a LED the emit light and when smoke particles are present is deflects the particles to the photocell generating electricity and setting of the alarm.
- So smoke detectors don't detect smoke, they detect the alpha particles emiting radiation!
- if you are doing this as a project, DO NOT COPY, YOU WILL GET A FAIL IF YOU DO THAT :O !!!
- Instead try and take bits out!
What else can I help you with?
What does nuclear radiation have to do with how a smoke detector works?
A weak source of Americium-241 is found in smoke detectors. The Alpha particles, which ionise the air, are emitted from here. This causes the air to conduct electricity and a small current flows.
What is the difference between photon detector and thermal detector?
The wavelength of the detected signal.
Does anyone have instrutions for setting up the in house internaional kingdun kd-101a wireless inline smoke alrams you need tknow how to setup learn mode?
This is from the German User Manual:http://www.klimafirstklaas.de/fileadmin/Daten_www.klimafirstklaas.de/Klimageraete/Anleitung/Bedienungsanleitung.pdfUsed translate.google.com to make is understandableAdded some possible alternative translation suggestions in [square brackets]2. Steering: [Installing, operating]1) Please remove the transparent film of 9V and 1.5V batteries [and install them].2) Please hold test button for a few seconds, it should now hear a signal to be (test signal). When the signal rings, please release the button (which will sound for about 1-2 times and then stops automatically).If this test run is completed, this indicates that your wireless smoke detector is working.3) Networking Smoke Alarms:Choose one of the Smoke Alarms as a "main smoke alarm." Press pleasebriefly the LEARN button, the indicator will turn green (There are two LED colors, green or red.).Press the LEARN button again, and now the previously green indicator turns redThis indicates that the "main smoke alarm" function is now complete.a) Choose an additional smoke detectors as a "subordinate smoke alarm" and press the LEARN button repeatedly [ continuously??] until the Learn LED lights red. Then press and hold until the "Test" button of the main smoke alarm to give both smoke alarm, the red LED goes out, the light of the Subordinate Detector is now out.This shows that the networking function is completed. The connectApplication is now complete.How many smoke alarms can be arbitrarily connected will. [Probably means that Any number of Smoke Detectors can be interconnected]b) Repeat Section 3. a) for other "subordinate smoke alarms" .4) Voting Test:Push the test button of any smoke detector. The alarm will sound and the red LED lights.All other networked smoke detectors also give an alarm and the green LED indicators for each light up.
What is diode detector?
there are two types:- 1) simple diode detector 2) practical diode detector the diode is common device used in am demodulator. signal(am demodulator signal ) is applied anode and output is taken from cathod
Can i get a juul past a metal detector Trying to get my juul onto a cruise but not sure if they'll be able to see it on a metal detector or if they scan me. Will it go off on a metal detector?
I suggest you just ask the cruise line if e-cigarettes are allowed.
If I disconnect one smoke detector, will the other smoke detectors still work?
Yes, the other smoke detectors will still work if one is disconnected. Each smoke detector operates independently and is not interconnected with the others.
How does a smoke alarm work?
press onThere are two kinds of smoke detectors. 1. When a fire burns, it releases smoke. The smoke detector senses the smoke. 2. A fire is very hot. The detector feels the heat. A smoke detector will then either set off an alarm, or it will turn on the sprinklers.
Why is the smoke detector beeping?
The smoke detector is beeping because it is detecting smoke or a low battery.
What are the steps involved in hardwired smoke detector installation?
Turn off power to the area where the smoke detector will be installed. Remove the old smoke detector, if applicable. Connect the new smoke detector to the existing wiring. Mount the smoke detector on the ceiling or wall using screws. Restore power and test the smoke detector to ensure it is functioning properly.
Was the smoke detector proposed for a mission?
actually no, the smoke detector was not proposed for a mission
Can you buy smoke detector tape?
Personally, I have no idea what "smoke detector tape" is.
Is a smoke a detector like a sense organ?
is a smoke detector like a sense organ
Is a smoke detector like a sense organ?
is a smoke detector like a sense organ
Why does the smoke detector beep?
A smoke detector beeps to alert you when it detects smoke or fire, which could be a sign of danger in your home.
Why does a smoke detector chirp?
A smoke detector chirps to indicate that its battery is low and needs to be replaced.
What technology does a photoelectric smoke detector use to detect smoke?
A photoelectric smoke detector uses a light sensor and a light source to detect smoke particles in the air. When smoke enters the detector, it scatters the light, triggering the alarm.
Why does a smoke detector chirp intermittently?
A smoke detector chirps intermittently when its battery is low and needs to be replaced.
