what inside a smoke detector

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Smoke detector – Wikipedia

A smoke detector is a device that senses smoke, typically as an indicator of fire. Commercial smoke detectors issue a signal to a fire alarm control panel …

Americium in Ionization Smoke Detectors | US EPA

9 Aug 2021 Smoke detectors are common household items that keep you and your family safe by alerting you to smoke in your home. Ionization smoke detectors …

Will smoke detectors cause radiation poisoning?

12 Mar 2018 Ionization chamber smoke detectors contain a small amount of americium-241, a radioactive material. Smoke particles disrupt the low, steady …

Backgrounder On Smoke Detectors | NRC.gov

Ionization chamber smoke detectors rely on radiation to “ionize” the air inside the chamber. A radioactive source “decays,” or sheds particles and photons from …

What’s inside smoke alarms | WIRED UK

28 May 2013 When an alpha particle collides with oxygen or nitrogen, it grabs negative electrons, and thereby ionises them. When smoke enters, it absorbs …

How smoke detectors work – Explain that Stuff

19 Sept 2020 What’s inside the detector? · A length of the magic fiber (yellow) is stretched around a wheel (red) inside a metal container (gray) with holes …

What is a Photoelectric Smoke Detector | Photoelectric Smoke Alarm

A dual sensor smoke alarm has both ionization and photoelectric sensors inside. Ionization smoke alarms are best for detecting rapid flame fires, while …

Smoke Detection

For a structure that requires monitoring with alarms in the event of a fire, a combination of fire alarm system with in-room detectors and duct detectors in the …

Smoke detectors explained

Commercial and industrial smoke detectors issue a signal to a fire alarm control panel as part of a building’s central fire alarm system. By law all workplaces …

Types of smoke alarms – Department of Fire and Emergency Services

The two types of smoke alarms used in Western Australia use either ionisation or photoelectrical smoke sensors. The difference is in the smoke sensing …

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