0
Photo-electric (PE - as opposed to the ionization type of) smoke detectors do indeed use the reduction of light energy at the receiving end to "Sound The Alarm". Whether or not this is IR energy, I can't say. Might someone else please fill this in? Thanks.
Wiki User
∙ 13y ago
Add your answer:
Earn +20 pts
Do wired smoke detectors mount on electrical boxes?
Hard wired smoke detectors have to have a junction box behind them. These detectors use 120 volts as a working voltage. These types of detectors should be wired with 3 conductor #14 wire. The detector uses the black and white wires for the 120 volt source. Detectors these days have an output signal wire that can be connected to other detectors so that if one trips it will sound the alarm in other detectors that are on the same circuit. This output wire can be connected to other detectors by the third red wire in the 3 conductor cable.
What does Daylight Saving Time have to do with smoke detectors?
Fire safety officials encourage people to use the two annual clock shifts as a reminder to check the batteries in smoke and carbon monoxide detectors. This is especially important in fall, just before the heating,candle, and fireplace season causes an increase in home fires.
Do you have to pay rent if there is no smoke detectors?
It will depend on both the location of the rented property and the rental terms. In Ontario Canada, there is now a legal requirement for smoke detectors to be installed on each floor of a property, but this condition may not apply in other jurisdictions. The occupants of a rented single family home are expected to install smoke detectors themselves. However, for any multi-family property, the landlord is responsible for installing them. The specific requirements can be obtained by checking with the local Fire Department.
What are the members of electomagnetic spectrum?
From lowest frequency to highest, the electromagnetic spectrum consists of radio waves, microwaves, infrared waves, visible light, ultraviolet rays, X-rays, and gamma rays. Heat, or thermal radiation, is also a type of electromagnetic wave, but is not limited to any particular frequency range. Televisions and cell phones use electromagnetic waves in the radio-wave region.
What is an important use of the alpha particle?
The commonest use of alpha particles is probably in smoke detectors. The americium in the smoke detectors emits alpha particles. If smoke is present, it stops the alpha particles more efficiently than air, creating ions in the detection area of the device. The ions make the air more conductive, and the conductivity is sensed by the detector, which sets of the alarm. Alpha particles are also used in the radioisotope thermoelectric generators that power pacemakers and space probes.
What kind of nuclear decay occurs within most smoke detectors?
Many smoke detectors use Americium-241, which emits alpha rays, to keep air ionized.
What form of electromagnetic waves are used in smoke detectors?
There are two types of smoke detectors:Alpha particle - these do not use electromagnetic wavesPhotoelectric - these use a beam of either visible lightor near infrared electromagnetic waves
What do people use everyday that have infrared rays in them?
Infrared rays are used in television remote controls
What gauge wire is used to run smoke detectors?
14-3 Is the standard wire use for residental smoke detectors.
What are some uses for infrared rays?
use the sun ****
Using BRK Smoke Detectors to Protect Your Investments?
BRK Smoke Detectors have long been recognized as one of the top brands when it comes to smoke detectors and many other types of gas detectors. Because of their tried and tested construction, BRK smoke detectors are able to stand up to years of abuse without having to undergo a whole lot of maintenance to stay in working order. This is why many companies tend to use BRK smoke detectors when they need to cover a large area of industrial use with a smoke detector that is guaranteed to provide years of carefree service. If BRK smoke detectors are trusted for this, they can be trusted for anything.
Why is it important not to use Ni Cads in smoke detectors?
becuz
Was there americium in the first smoke dectores?
Alpha particles from americium ionized the air. An air with smoke has a different ionization, ionization currents which are also different are measured, compared and the detector (which was before calibrated) is ready ! The americium smoke detectors (with ionization) are not the first smoke detectors.
Which isotopes are used in smoke detectors?
Americium (241) is used in smoke detectors that use "ionizing radiation" to detect changes in the air. Other types of detectors use photo-electric sensors based upon a variety of photo-sensitive chemicals.
How do you benefit in our everyday life with radio waves infrared rays and uv rays?
you use them for television and for fm and am
What is the element americium used in?
One use is in smoke detectors to warn of fire.
How does the sensor control smoke detector?
The smoke detectors use the photoelectric effect or a sensor based on the ionization differences between smoke and air.
