photoelectric smoke detector的意思|示意

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英语单词photoelectric smoke detector的用法讲解

Photoelectric smoke detectors, also known as optical smoke detectors, are devices that can detect the presence of smoke by using a special sensor that can detect changes in light patterns. These detectors work by emitting a beam of light, which is then reflected off a sensor and captured by a photoelectric cell. When smoke enters the chamber, it scatters the light and triggers the alarm.

The photoelectric smoke detector is widely used in homes, buildings, and offices as a part of fire protection systems. It is typically installed in areas prone to smoke or heat, such as kitchens and bedrooms.

One of the advantages of photoelectric smoke detectors is that they are less likely to trigger false alarms than ionization smoke detectors, which detect changes in the electric charges caused by smoke particles. Photoelectric smoke detectors are also less sensitive to small particles of smoke, such as those produced by cooking or burning toast, which can cause false alarms in ionization smoke detectors.

In summary, the photoelectric smoke detector is an important component of fire protection systems that can help to detect smoke and prevent fires from spreading. With its reliable and accurate detection capabilities, it is a valuable tool for keeping homes and workplaces safe.