Which brand of dust monitoring equipment can be better?

The dust sensor is a complex and precise equipment that can achieve precise measurement of dust.

The function of the dust monitoring equipment is to monitor the dust particle concentration data and noise data in the construction site environment. It is an important monitoring equipment in the construction environment, which greatly facilitates the management and supervision of the construction unit by the environmental protection department.

You can view the environmental status of each construction unit through the data platform, and use this as the data basis to conduct relevant investigations and visits to the construction site in real time, and urge the construction site to rectify the construction equipment and construction environment in a timely manner and in accordance with the law. A few days ago, the Xi'an environmental protection department conducted statistics on all construction sites within the city's construction area and found that the concentration of particulate matter was high, which seriously affected the atmospheric environment around the construction site. Therefore, the situation is not optimistic.

At the same time, the noise interference situation is also serious, and many residents are miserable. However, surveys are time-consuming and laborious, and collecting and collating data is difficult. To this end, the Xi'an environmental management department implements the guidelines and policies for the installation of dust monitoring equipment at the construction site in accordance with the relevant laws and regulations on environmental protection management.

The noise data is uploaded to the environmental protection platform to manage and supervise the construction site environment in a unified manner.

Fugitive Dust Monitoring Equipment, Monitoring Noise, Requires the Use of Noise Sensors and Noise Monitoring Accessories. Noise sensors are used to receive sound waves and display the vibration image of the sound. Through the acoustic-sensitive condenser electret microphone, the sound wave causes the electret film inside the microphone to vibrate, causing the capacitance to change, and generating a small voltage corresponding to the change, so as to realize the conversion signal from optical signal to electrical signal.

The noise monitoring accessories measure the decibel range of 30-130db, which can be monitored in real time 24 hours a day. At a minimum, most instruments used for environmental noise monitoring should have a time-averaged integration function, i.e., at least the equivalent continuous sound level LEQ value can be measured to meet the data monitoring requirements of environmental regulatory authorities. However, for environmental monitoring stations that need to carry out traffic noise measurement or noise survey, they should also have statistical sound level ln(n) measurement and 24-hour monitoring functions.

At the same time, they also absorb light. Part of the energy that irradiates light. According to the relative attenuation rate of incident light passing through the measured concentration field, the relative attenuation rate can basically reflect the relative concentration of dust in the measured field linearly.

Then the magnitude of the light intensity is proportional to the intensity of the electrical signal converted by photoelectric conversion, and the relative attenuation rate can be obtained by measuring the electrical signal, and then the dust concentration in the field to be measured can be measured.

At present, more and more construction units are looking for and consulting through different channels to sell and operate dust monitoring equipment and manufacturers to purchase equipment, but to find high-quality and powerful manufacturers, the purchase of preferential and cost-effective equipment, or some efforts. There is a Guangzhou Hanma Smart in the industry that is a manufacturer of smart construction site solutions and equipment. We are committed to developing a perfect dust environment monitoring solution for users, and solving problems for users through one-stop service.

The dust collector is inseparable from design and production. Only experienced design analysis of cleaning conditions and countermeasures, in the production process to ensure the reliable pressure resistance of the box, low air leakage rate, and the most important filter element filter bag selection and quality control, in order to produce the best dust collector. You can find us in Hwacheon.

The quality of the dust collector is inseparable from the accumulation of production experience of the manufacturer. Therefore, it is best to choose the experienced one.

The dust collector is bad and the material and process are related!

Dust monitoring equipment is mainly used to detect the concentration of dust in the environment, and at present, people's requirements for living, working and living environments are getting higher and higher, and the harm of productive dust to the human body is becoming increasingly prominent. Its working principle is mainly light absorption, light scattering, rays, microcomputer laser and AC electrostatic induction principle; It is mainly applicable to various research institutes, meteorology, public health, industrial labor hygiene engineering, air pollution research, etc. The detector is widely used in the Center for Disease Control and Prevention, mining metallurgy, chemical manufacturing, health supervision, environmental monitoring, etc.

There are five main methods of rapid testing instruments: light scattering method, ray method and microweight balance method, electrostatic induction method, and piezoelectric balance method. The instrument of microweight balance is now basically monopolized by a few American companies, which is high and expensive to maintain.

The instrument of electrostatic induction method is generally used to detect whether the bag leaks after the bag filter. The use of piezoelectric balance method is more troublesome, and there are few manufacturers.

There are many foreign and domestic manufacturers of dust detection instruments for light scattering method. It is also divided into ordinary light scattering and laser light scattering. Because of the good repeatability and stability of the laser light scattering instrument, the ordinary light scattering method has been completely replaced in Europe, the United States and Japan.

If you choose a good manufacturer, you can achieve high cost performance. The quality of domestic laser instruments varies greatly, and attention should be paid to choosing manufacturers with guaranteed quality.

The main application of dust monitoring equipment is owned by the field

1.It is suitable for the determination of dust concentration at the production site of the labor department of industrial and mining enterprises.

2.Monitoring of inhalable particulate matter in public places at health and epidemic prevention stations.

3.Environmental and environmental protection monitoring department atmospheric dust detection, pollution source investigation.

4.Municipal tobacco supervision.

5.Scientific research, on-site testing of filter material performance test, etc.

6.On-site dust concentration determination, exhaust port dust concentration monitoring.

7.Pharmaceutical manufacturing testing.

8.Occupational health and safety testing.

9.Where the factory needs clean air, the management of manufacturing processes such as precision instruments, testing instruments, electronic components, food, and pharmaceuticals is required.

10.Various research institutes, meteorology, public health, industrial labor hygiene engineering, air pollution research, etc.

11.Dust detection in construction or blasting areas; Site exposure monitoring.

12.Indoor air quality testing.

Dust monitoring equipment can be used to monitor particulate matter in the atmosphere, wind speed and direction, etc., and the wind path can be realized.

The composition of dust equipment: sensor, bracket, LED screen, host, electric control box, etc.

Sensor: louver box (PM10, noise, temperature and humidity, wind, atmospheric pressure, TSP, light intensity, etc.).

Wind speed sensor, wind direction sensor.

There is also a networked type and a non-networked type. The networked type can remotely monitor the parameters on the equipment, and the non-networked type can only go to the site to see the data displayed on the LED screen.

In recent years, not only has more and more attention been paid to it, but people have also paid more attention to dust control on the construction site. Dust is an open source of pollution that enters the atmosphere due to the dust on the ground being blown by wind, man-made and other drives, and is an important part of the total suspended particulate matter in the ambient air. It is divided into a number of types, namely road dust, construction dust, accumulation dust, etc., it is an unorganized pollution source, the prevention and control coefficient is relatively large, and it is also a key topic in the 13th Five-Year Plan of the Ministry of Environmental Protection, so it is necessary to pay attention to dust control.

If we want to accurately monitor, reduce and manage the emission of dust particulate matter on the construction site, we must use this professional air quality monitoring equipment, which can monitor the indicators of the sensor in real time, and when the abnormal state can timely feedback to the user, so that we can take necessary measures to maintain a fresh construction site environment.

The whole product of the CW-76S construction site dust sensor adopts the popular design style, the simple streamlined design is atmospheric and fashionable, and the overall color is the classic green melody, simple and fresh, no matter what we see in the first product, we will see that this product is from the hands of the Sanavia.

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.

There are many brands on the market at present, and you need to consider your current overall supporting facilities and buy them according to your budget;

The sensors of the dust monitoring system are generally used in the wind, and other homes are also good, but the quality and price of the wind are better.

The dust monitoring system (FT-YC01) can accurately monitor the pollution data in the environment, and the sensor is very critical.

1) First of all, because it is used in the outdoor environment, it is necessary to consider the geographical environment and meteorological environment, so it must be industrial-grade;

2) The user's requirements for accuracy and range, the general construction site dust monitoring is mainly for the TSP particulate matter concentration, the range can generally reach 10-30mg m3, and the accuracy is OK;

3) The sensor should be able to sample the constant current, and the temperature and humidity can be automatically adjusted and calibrated, otherwise the sensor will be inaccurate in case of wind, rain, fog, freezing, high temperature and other special circumstances.

4) Dustproof, waterproof and insect-proof treatment, if the sampling port is not dust-proof, waterproof and insect-proof treatment, after a period of time, the data must be inaccurate.

5) Among all the manufacturers that meet the requirements, find one with the highest cost performance.

I will only help you tell you the direction of identification, and I will not advertise the specific manufacturer, and find it myself.

The dust sensor is a detection mechanism that uses an advanced detection mechanism to achieve detection, and the detection unit in the dust sensor adopts the principle of particle counting, which can sensitively detect dust particles above the diameter. At present, the principle of dust sensor is mainly based on four principles: gravimetric method, micro-oscillation balance method, ray method and light scattering method, each with its own advantages and disadvantages.

1. The principle of gravimetric method of dust sensor

The principle of gravimetric method is to draw a certain volume of air at a constant speed through a sampler with certain cutting characteristics, so that the PM10 in the ambient air is intercepted on the filter membrane of known quality, and the concentration of dust is calculated according to the quality difference of the filter membrane and the sampling volume before and after sampling. It must be noted that the volume of the denominator in the unit ug m3 of the measured particulate matter should be the volume of 0 under the standard condition, and the volume under the measured temperature and pressure should be converted to the volume under the standard condition.

Advantages: The national standard method is the benchmark for verifying the accuracy of other methods;

Disadvantages: Instantaneous values cannot be displayed, only averages.

2. The principle of micro oscillation balance method for dust sensor

The micro-oscillation balance method uses an oscillating hollow conical tube inside the sensor with a replaceable filter membrane installed at its oscillating end, and the oscillation frequency depends on the characteristics of the conical tube and its quality. When the sample gas flows through the filter membrane, the particulate matter in it is deposited on the filter membrane, and the quality change of the filter membrane leads to the change of the oscillation frequency, and the mass concentration of the particulate matter marker in the period is calculated according to the flow rate, on-site ambient temperature and air pressure.

Advantages: accurate, high sensitivity, wide adaptability, continuous monitoring;

Disadvantages: large size, **expensive.

3. Dust sensor ray method principle:

The ray method is the use of the principle of beta ray attenuation, the ambient air is sucked into the sampling tube by the sampling pump, discharged after the filter membrane, and the particles are precipitated on the filter membrane, when the rays pass through the filter membrane deposited with particles, the energy of the beta ray is attenuated, and the concentration of particulate matter can be calculated by measuring the amount of attenuation.

Advantages: High sensitivity.

Cons: Slow response, usually only uses its hourly average.

4. Principle of light scattering method of dust sensor:

Scattered light is produced when light hits suspended particles in the air, and the intensity of the scattered light is proportional to its mass concentration. The particle concentration value is obtained by measuring the intensity of the scattered light and applying a mass concentration conversion. Multiply by the k-factor for digital signal processing to convert the dust concentration signal into an electrical signal.

Advantages: fast detection speed, small size, cheap, suitable for particle concentration measurement in public places;

Disadvantages: Not sure if its accuracy is higher than the other three principles.

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.

At present, there are many brands of dust monitoring equipment on the market, and the overall trend is almost the same.

First, it depends on the quality of the product.

Second, it depends on the relevant document requirements of the location.

According to the different requirements of different places, the methods used are also different, mainly laser scattering method and beta ray method.

Our company's brand Baizhou Environmental Protection, the company is Qingdao Baizhou Environmental Protection Technology Co., Ltd., the production technology is constantly upgrading, the core components are accurate, the dredging is stable, you can purchase a few trials.