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A fire alarm system with an integrated ionization chamber supported by two plates connected by voltage is known as an ionization smoke detector. Smoke entering the chamber displaces electrons already existing between the two plates, setting off an alarm.
Ionization smoke detectors are unique in that they can sound an alarm in the event of a fire threat even if the fire source isn’t producing much smoke. It should be noted that not all flames emit a lot of smoke.
This is particularly true in industrial settings where the usage of highly combustible materials (such as wood, paper, and liquids) may result in raging fires where smoke output is insufficient to trigger the alert on standard smoke detectors.
Ionization smoke detectors have shown to be more effective in these situations and are quickly triggered by small amounts of smoke entering these devices’ built-in ionization chambers.
Ionization and photoelectric smoke detector alarms are the two major types of smoke detectors that can be installed in houses. One needs to be able to distinguish between them in order to choose the alarm that is appropriate for their home.
The Global Ionization Smoke Detector ICs market accounted for $XX Billion in 2021 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2024 to 2030.
A low power CMOS smoke detector IC from EE Web,the ionization type is the RE46C152. This circuit will offer all the functionality needed for an ionization type smoke detector with only a few external components. To reduce standby current, an inbuilt oscillator strobes power to the smoke detecting circuitry for 10.5mS every 1.66 seconds.
When in standby, a check for a low battery state is made every 40 seconds. A temporal pattern or a continuous tone with a 2/3 duty cycle can be chosen from the Tone input. The NFPA 72 emergency evacuation signal is supported by the temporal horn signal. When one detector sounds its alert, all of the connected detectors can be connected by an interconnect pin.
An additional button can be utilised to activate the decreased sensitivity mode thanks to an integrated 8-minute timer. It is also possible to operate the test and timer modes with a single button. The use of this instrument, which makes use of an ionization chamber for smoke detection, is not limited to smoke detection.
For use in smoke detectors that meet Underwriters Laboratory Specification UL217 and UL268 is the RE46C152.
