Which dust detector is better, I don t know much about dust detectors

I have used Beijing Judao Hesheng's laser dust detector, and the cost performance is good.

Main technical indicators and characteristics.

1.Detection sensitivity (relative to corrected particles): 1cpm=; (High sensitivity: 1cpm =.)

2.Measuring range (relative to calibration particles) :(high sensitivity: mg m3 10 mg m3).

4.Measurement accuracy: 10%.

5.Includes sampling pump, flow rate 2l min.

6.It can be monitored continuously.

7.The built-in 40mm membrane collects dust samples while monitoring particulate matter concentrations.

8.PM10, PM5, cutter and total dust sampler are available.

9.With a self-calibration system, it can effectively eliminate the systematic error of the instrument.

10.The unique optical path self-cleaning system avoids the contamination of the core components of the instrument by dust.

11.A variety of output interfaces are available: 0-1V voltage output, current output, RS232 or RS485 output.

12.Power supply: NI-MH rechargeable battery pack, fully charged battery for 8 hours of continuous use, 220VAC 15VDC power adapter included.

Visual dust detector.

Summary. The difference between ordinary dust detectors and coal dust detectors lies in the type of dust they detect and the detection principle. Ordinary dust detectors are usually used to detect general dust in the air, such as building construction, road dust, etc.

Its detection principle is to use the principle of laser scattering or optical scattering to count and measure particles in the air to obtain dust concentration. The coal dust detector is specially used to detect the concentration of coal dust.

The difference between ordinary dust detectors and coal dust detectors lies in the type of dust they detect and the detection principle. Ordinary dust detectors are usually used to detect general dust in the air, such as building construction, road dust, etc. Its detection principle is to use the principle of laser scattering or optical scattering to count and measure the particles in the air, so as to obtain the dust concentration.

The coal dust detector is specially used to detect the concentration of coal dust in Wang Tsai.

Can you elaborate on that a little bit more?

Coal dust is usually finer than ordinary dust, and has the characteristics of flammable and explosive, so it needs special testing instruments for detection. The detection principle of the coal dust detector is to measure and analyze the coal dust by light absorption method or light scattering method in the rotten shed, so as to obtain the coal dust concentration. In short, the difference between the ordinary dust detector and the coal dust detector is the difference in the type of dust they detect and the detection principle.

Dust sensors are mainly used in construction sites, and at present, construction factories are required to control dust and civilized construction, and the construction sites that do not meet the requirements will be seriously dealt with. Dust is an open source of pollution, which is an important part of the total suspended particulate matter in the ambient air, and we need to use the construction site dust sensor to monitor it, so that we can grasp the dust concentration at any time.

Fugitive dust sensors are used to detect fine particulate matter in the air, i.e., particles in the ambient air with an aerodynamic equivalent diameter of less than or equal to microns. It can be suspended in the air for a long time, and the higher its concentration in the air, the more serious the air pollution. Compared with coarser atmospheric particulate matter, it has a smaller particle size, a large area, strong activity, and is easy to attach toxic and harmful substances (such as heavy metals, microorganisms, etc.), and has a long residence time in the atmosphere and a long transportation distance, so it has a greater impact on human health and atmospheric environmental quality.

CW-76S construction site dust sensor (dust detector) is a high-tech product integrating aerodynamics, digital signal processing and photoelectric integration independently developed by Shenzhen Senavi, which is mainly used to detect dust mass concentration (PM value) in the atmosphere, suitable for construction sites, urban grid monitoring, mobile monitoring and other fields and occasions, and is the core module of the air quality detection system. Its functional characteristics are as follows:

Accurate data: laser principle detection, industrial-grade photoelectric induction; High resolution: particle size,;

Detect; Stable performance: It can adapt to the composition of dust substances in different atmospheric environments, and adjust the parameter coefficient independently;

Data transmission: 485 (Modbus standard protocol) or RS232, UART output; Provide switching output, can be connected to outdoor sound and light alarm equipment, etc.;

Intelligent monitoring: real-time monitoring of various indicators of the sensor, and timely feedback to the user when abnormal state;

The dust sampler separates the respirable dust and coarse powder dust that are harmful to the human body, and determines the dust emission by the size of the disturbance when the locust collapses. A signal is generated by dynamic charge induction between dust particles and the probe as they flow through the probe. The working principle of the dust detector is mainly the principle of light scattering and the principle of electrostatic influenza control.

Only sampling is required, and laboratory tests are required for follow-up. Zhidao can directly output the results. AC electrostatic technology uses standard offsets to monitor the charge signal to determine the amount of perturbation of the AC signal.

As an important part of air purification products, dust sensors (also known as dust sensors and particulate matter sensors) are widely used in air purifiers, air purifiers, air conditioners, ventilation equipment, environmental monitoring equipment and other productsThe products have also formed different levels such as low, medium and high-end, and the terminal needs of different application occasions.

CW-76S construction site dust sensor (dust detector) is a high-tech product integrating aerodynamics, digital signal processing and photoelectric integration independently developed by Shenzhen Senavi, which is mainly used to detect dust mass concentration (PM value) in the atmosphere, suitable for construction sites, urban grid monitoring, mobile monitoring and other fields and occasions, and is the core module of the air quality detection system.

Domestic quality and cost-effective are GAG6050 explosion-proof laser dust meter, very representative, at present, the application of industrial dust concentration monitor is more and more widespread, the specific application range is to prevent dust, metal dust, iron powder, aluminum powder, magnesium powder, tin powder, etc., as well as food dust, flour, feed powder, milk powder, fructose powder, etc., as well as other flammable and explosive, there are many.

Dust detectors are widely used in CDC, mining metallurgy, chemical manufacturing, health supervision, environmental monitoring, etc. At present, the domestic standard is CCZ-1000 automatic dust detector of China Industrial World.