Monitoring plan for dust pollution on construction sites

With the demolition and renovation of urban and rural areas, the number of construction sites is increasing, and coupled with the strong winds and dry climate in spring, the dust content in the air is high, which not only affects the appearance of the city, but also makes our travel suffer from dust pollution.
Dust does not directly harm people, but it can cause significant harm to organs such as the respiratory tract and eyes. Particle size greater than10Micro sized dust has a short residence time in the air and can be effectively trapped in the respiratory tract during respiration, preventing it from entering the alveoli. However, due to the presence of wood tar in wood dust, which is composed of various phenols and hydrocarbons and contains highly carcinogenic substances, over time, some workers may suffer from bronchitis, asthma, emphysema, and even cancer. Particle size less than10Wood powder below microns can directly enter human lung tissue and settle in the alveoli, which may cause chronic fibrosis of lung tissue and even lead to a series of diseases such as pulmonary heart disease and cardiovascular disease. And these inhalable substances can also bring various pollutants or bacteria into the lungs, posing a great threat to human health. If dust bounces or flies into people's eyes, it can cause injury and affect normal operations. In addition, wood dust is also one of the most dangerous flammable materials, which can easily cause fires. In addition, suspended dust can increase abnormal wear and tear of production equipment, shorten equipment lifespan, increase maintenance costs, and thus have an undeniable impact on the output and economic benefits of enterprises.
Therefore, for the sake of our physical health and living environment, our company has launched a series of dust detectors that can effectively detect dust, When the dust concentration exceeds the standard, the instrument automatically alarms, keeping you away from the danger of health damage.

JSA2-PMDust Detector

Instrument Description

JSA2-PMAir purifier purification efficiency dust detector is an instrument that measures the number of dust particles per unit volume at the inlet and outlet of an air purifier, and calculates the efficiency based on the number of dust particles at the inlet and outlet. It is an independently developed aerodynamic system based on the advanced high-sensitivity microsensor technology of Jishun An Company,digital signal processing,High tech products integrating optics, mechanics, and electronics. The basic principle is that the laser is scattered by dust particles,Digital signal processing of pulse signals output by optical sensors,Measurement parameter setting,The result display, buttons, time, date, etc. are all controlled by a built-in microcomputer(MCU)Control and implementation.

This air purifier purification efficiency tester can detect the sameWhen dealing with two particle size ranges(0.3，2.5)Perform detection and analysis. The instrument defaults to the front measurement setting, which means that the user takes the instrument to the air inlet to measure the number of dust particles per unit volume20After seconds, the automatic display will be set to 'after', and the user will take the instrument to the air outlet for measurement20After the measurement is completed, the purification efficiency of this purifier is automatically calculated based on the current number of dust particles measured at the inlet and outlet. This instrument has high testing accuracy,stable performance,Strong versatility,Easy and convenient operation,Meets and exceeds all performance indicators of similar products. It isThe targeted purification efficiency testing of air purifiers effectively reflects their purification effect. Users only need to use this instrument to measure the inlet and outlet of the air purifier separately, and it can accurately and real-time reflect the number of particulate matter before and after purification, and calculate its purification efficiency percentage. Therefore, this instrument is very practical for analyzing and detecting the purification effect of air purifiers. The air purifier purification efficiency detector is mainly composed of high sensitivity, high resolution, and high stability dust particle analysis sensors and high-precision sampling pumps imported from abroad. The data is collected by the sampling pump, then detected and analyzed by the sensors, and the analyzed data is reflected in real timeLCDdisplay

Instrument technical specifications

· Test particle size:0.3μmThe2.5μm

· Light source: laser diode

· traffic500ml

· Sampling time20second

· Testing method: Concentration (per liter) Unit:/rise

· power supplyLi-ionLithium ion battery（7.4V/1000mAh）
orAC/DCAdapter（ACInput:100～240V，50/60Hz，DCoutput:9V，1.）

· Battery working time: The continuous testing time is approximately3hour

· Overall dimensions:93（W）×180（H）×46（D）mm

· Weight: Approximately600g(including battery)）

· Environmental conditions: Working environment:5～45℃,＜90%RH

· Storage environment:–20～50℃,＜90%RH

· Standard attachments:AC/DCadapter