The suspended particles in the air are also dust, and if the content of these suspended particles in the air is high, it will cause air pollution, and these dust particles contain various substances that will affect human health. Dust particulate matter can generally be divided into total suspended particulate matter (TSP), inhalable particulate matter (PM10), fine dust particulate matter (PM2.).5）。The following will introduce to you the differences and relationships between these three types of particulate matter.
Total suspended particulate matter (TSP), inhalable particulate matter (PM10), fine dust particulate matter (PM2.).5）The main difference between these three types of particulate matter is the size of the diameter of the particulate matter, TSP total suspended particulate matter refers to particulate matter with a diameter of less than or equal to 100 microns, and PM10 refers to particulate matter with a kinetic diameter of less than or equal to 10 microns, PM25 means that the kinetic diameter is less than or equal to 25 microns of particles. where PM2The particulate matter of 5 and PM10 is particulate matter that can be inhaled into the human body because these particles contain a large number of impurities, many of which are toxic substances and will cause harm to the human body.
TSP and PM10, PM25. There is a layer-by-layer inclusion relationship, i.e., PM10 is part of the TSP, PM25 is part of PM10. The results show that the weight ratio of PM10 TSP is 60%-80%, while PM25 The weight ratio of PM10 is 50%-70%. If you want to detect PM2 in the air5. The concentration content of PM10 can be detected by the dust concentration detector.
What other environments do you need dust detectors?
1.Cyclones, dust collectors, or dust emission control devices that require continuous monitoring of particles.
2.Dust detectors are also required in the production of plant dust at multiple points of monitoring.
3.Air purifiers, ventilation systems, and indoor and outdoor air quality monitoring.
4.Some workshops require dust detectors to continuously monitor the integrity of the filters.
5.Air quality monitoring for underground transportation systems.
6.A laboratory or dust-free workshop for aerosol exposure studies.
7.Control and monitoring in the process of drying solids.
8.Dust detectors can also be used for all airborne particulate emissions monitoring applications.
9.The key to ecological environmental protection monitoring is gas construction site dust, PM10, PM25. TSP detection, pollutant substance investigation, etc.;
10.monitoring and supervision of the concentration of inhalable particulate matter in public places by the Center for Disease Prevention and Health Supervision;
In most enterprises in China, workers have little understanding of the hazards of dust. In fact, the temperature of dust** such as flour or feed is equivalent to the ignition temperature of a sheet of flammable paper. A spark can cause dust**. And the power of dust ** is huge - because it is easy to produce secondary**. The first air wave will blow up the dust deposited on the equipment or the ground, and in a short period of time, negative pressure will be formed in the central area, and the surrounding fresh air will be filled in from the outside to the inside, mixed with the dust raised, thus triggering the second time. Second, the dust concentration will be higher. As long as the workplace or environment where dust is generated, the dust detector can be used to measure the concentration of dust, and the concentration of dust can be accurately grasped in a timely manner, which can effectively avoid production hazards and protect the health of workers.
Wuxi ShiheThe SH-CDFC-50 Strip Display Dust Detector detects the dust in the atmosphere (PM25 PM10 tsp) or particulate matter (particle size at 03um/0.5um/1.0um/2.The number of particles above 5um) is continuously 24 hours ** detection and sound and light alarm, which can control the dust concentration or the number of particles in various occasions, and protect the life and property safety of various sites in time. The detector adopts imported sensors combined with high-speed and high-precision processing circuits, which has the advantages of stable signal, high precision and good repeatability, and adopts explosion-proof design, which is suitable for various dangerous occasions. The instrument outputs a variety of standard signals, which can be compatible with various alarm systems, PLC, DCS and other control systems. The instrument is widely used in coating, packaging, metallurgy, flour processing, coal mining, casting and grinding, shipbuilding, environmental protection, telecommunications, medical and other industries.
Installation Recommendations:
1: Dust concentration measuring instrument, fixed, the design institute generally requires separate line installation.
2: The place where the belt is transported, installed above the **point 0between 5-2 meters.
3: Production workshop, installation workshop in the column or wall 2About 5 meters.
4: Where there is a grinder, it is installed above the grinder 0between 5-2 meters.
5: Pulverized coal, flour, etc., stacked (dust production point), installed above the dust production point, for example, pulverized coal 15 meters high, to be installed above it 05-2 meters high, that is, 155-17 meters.