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The difference between PM2.5 sensor and smoke sensor

Update: 2019-10-24 17:18 Source: LUFTMY Reading: ↻ News

What is the difference between PM2.5 sensors and traditional smoke detectors? Is it all particulate matter? There's a big difference:

The difference between PM2.5 sensor and smoke sensor
The difference between PM2.5 sensor and smoke sensor

1. Different measurement parameters

PM2.5 sensor monitors particles with aerodynamic equivalent diameter less than or equal to 2.5 microns, also known as fine particles. Generally, it adopts laser scattering principle, which is quite sensitive to particles in the air.The resolution of civil indoor air quality monitoring equipment is up to 1 μ g / m3, and the range is up to 1mg / m3 (i.e. 1000 μ g / m3).The smoke alarm is aimed at the high concentration of total particles, generally using infrared light principle, not high resolution requirements, low concentration of particles are not sensitive, generally when encountering large particles, high concentration environment (the concentration of dense smoke particles quickly reaches several milligrams or tens of milligrams) can play a good role.So there are obvious differences in the pertinence of monitoring parameters.

2. Different applications

PM2.5 sensor is used for health, while smoke sensor is used for fire safety.

At present, PM2.5 sensor has been widely used in air environment monitoring, indoor air quality monitoring, air quality monitoring in vehicles, all of these applications are to monitor the presence of particulate pollutants in the air. Because PM2.5 will directly enter the alveoli after entering the human body, which will have an impact on human health.

Smoke sensors are more widely used in the fire when there is a large amount of smoke, and under normal circumstances smoke-free places, such as: families, factories, office buildings, hospitals, schools, museums and other important fire prevention places, play the role of fire early warning, reduce the life safety and property loss caused by the fire.

With the improvement of people's requirements for fire and security, a new solution is to use PM2.5 sensor together with smoke alarm and integrate it into the equipment terminal.In this way, the two kinds of sensors can learn from each other and play their due role.At the beginning of the fire, the hidden danger can be found earlier, and the monitoring value can be sent to the security management in advance, so as to further improve the fire fighting rate.Of course, it also involves the reasonable installation and operation and maintenance, as well as the joint use of video monitoring system, so as to avoid the situation of false alarm as much as possible.

In a word, PM2.5 sensor is a more sensitive and accurate monitoring method. It is the development and extension of particle testing technology in recent years, and has been widely recognized and applied in the field of indoor / outdoor air quality intelligent monitoring in recent years.

GDS06 Infrared dust sensor
GDS06 Infrared dust sensor

Air quality sensor brand LUFTMY, air quality sensor GDS06 USES the principle of optical scattering to obtain the concentration of particulate matter, and through the conversion of light path and circuit, measure the dust concentration within the detection range. Air particle sensor GDS06 has the characteristics of small volume, high precision, low power consumption, short response time, etc. The air quality sensor can be applied in air purifier, etc.

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