Persistent smoggy weather and crowded respiratory departments in major hospitals have made people truly realize the hazards of atmospheric pollution. Data shows that smog is mainly composed of sulfur dioxide, nitrogen oxides, and inhalable particulate matter. The first two are gaseous pollutants, while the latter, particulate matter, is the main culprit exacerbating smoggy weather pollution. The abbreviation for particulate matter is PM, and PM2.5 is the most harmful to the human body.

It is understood that when the human eye can perceive haze, the PM2.5 value is already close to 75. At this point, if the detector has deviations or deflated data, it will lead to an overestimation of air quality, affecting haze control strategies and even the public's peace of mind.

In response to this situation, the government cannot stand by. Last year, China included PM2.5 in the "National Standard." Monitoring points have sprung up across the country to publish real-time data, allowing people to intuitively understand the air conditions around them. Outdoor PM2.5 monitoring data has also begun to appear in radio and television broadcasts, much like weather forecasts. Because of this, people now monitor PM2.5 values alongside stock market data.

Since regions must report PM2.5 values in real-time, they must build multiple PM2.5 monitoring points and require corresponding monitoring equipment. The quality of this equipment determines the accuracy of the final data.

Therefore, using high-quality air quality monitoring instruments that meet international standards has become the top priority for ensuring the accuracy of PM2.5 monitoring!

Currently, China usually uses continuous monitoring methods (such as tapered element oscillating microbalance and β-ray attenuation) to monitor deposited mass. These methods have extremely strict requirements for air temperature, humidity, and flow rate; even a slight deviation can lead to vastly different results. Consequently, domestic and foreign enterprises are stepping up research and development for PM2.5 monitoring equipment sensors, and many high-tech products with high sensitivity and precision are being launched.

Luftmy Intelligent Technology Co., Ltd. has developed a series of sensors designed for PM2.5 monitoring equipment to "safeguard" the monitoring process. Each model features excellent reliability, repeatability, accuracy, and responsiveness. They also possess industry-leading total error bands, eliminating the need for individual sensor testing and calibration, ensuring system precision and warranty requirements, and allowing for easy sensor interchangeability.

The Infrared PM2.5 dust sensor HPD05 module uses the principle of optical scattering to detect dust concentration in the air. The sensor has a built-in infrared light-emitting diode and a high-sensitivity photoelectric receiving sensor. The infrared LED emits light that reflects upon encountering dust; the photoelectric sensor reflects the dust concentration by detecting the intensity of this reflected light. The sensor outputs a PWM signal directly or can output dust concentration values via IIC serial signals. This sensor is suitable for air purifiers, air conditioners with purification functions, fresh air systems, and air quality detection instruments.