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Introduction Indoor air quality (IAQ) is a critical factor in maintaining healthy living and working environments. With people spending up to 90% of their time indoors, the quality of the air inside buildings, monitored by air quality sensors, directly impacts health, comfort, and productivity. Poor IAQ can lead to a variety of health issues such as allergies, respiratory conditions, and fatigue, as well as decreased cognitive performance. Monitoring and improving IAQ is crucial for creating healthier...

With increasing concerns about pollution and its impact on health and the environment, air quality sensors have become essential tools in modern life. These devices help detect and measure pollutants in the air, providing critical data that informs individuals, organizations, and governments about the state of the environment. From indoor spaces to large-scale industrial applications, air quality sensors contribute to improving public health, safety, and environmental protection. What is an Air...

Introduction Non-dispersive infrared (NDIR) CO2 sensors are widely used in various industries for measuring carbon dioxide levels with high accuracy and reliability. Whether in environmental monitoring, HVAC systems, or industrial applications, these sensors offer a dependable solution for CO2 detection. In this article, we'll explore how NDIR CO2 sensors work, breaking down the key principles and components that enable them to function effectively. The Principle of Non-dispersive Infrared The...

Introduction With the growing awareness of environmental and health concerns, air quality has become a critical focus in modern society. Poor air quality can lead to respiratory issues, cardiovascular diseases, and long-term health risks. An essential tool in monitoring and improving air quality is the air quality sensor. These devices play a vital role in detecting pollutants, helping individuals, businesses, and governments make informed decisions to ensure healthier living and working environments....

Total Volatile Organic Compounds (TVOC) play a critical role in assessing indoor air quality, posing significant health and environmental risks. Understanding TVOCs is vital for creating safe, healthy living and working environments. This article explores the definition of TVOC, methods for measuring its levels, and effective strategies for reducing its presence indoors. What is TVOC? TVOC stands for Total Volatile Organic Compounds, encompassing a broad spectrum of organic chemicals. These compounds...

Abstract: The mining laser dust sensor is developed based on the light scattering principle. It features high detection accuracy, a long service life, and stable, reliable performance, particularly in nonlinear signal processing and signal filtering. It possesses outstanding characteristics, and the sensor's design scheme is elaborated in detail.   Coal is a pillar industry for the development of the national economy in China. As a non-renewable resource, coal accounts for 70% of the...

The optimal operating environment for laser sensors is affected by several key factors, including visibility, optical interference, and environmental conditions. These sensors use the signal return strength of the laser beam to accurately identify the target, and therefore perform well in a variety of applications. But to achieve the best performance, choosing the right working environment is crucial. The following are the ideal working conditions of laser sensors and the coping strategies under...

A sensor is a device that can sense and respond to changes in the external environment, and its role is to convert phenomena in the physical world into readable signals. The input can be a physical parameter such as light, heat, motion, moisture, pressure, etc. The sensor converts this information into an electrical signal or other processable form and then outputs it to a display or computer system. This data can be used for real-time monitoring, automated control, and data analytics to support...

Gas is a fluid, and its flow is caused by a pressure difference. The larger the pressure difference is, the higher the flow rate becomes. For gas sensors, what matters is not the total pipeline flow rate but the flow rate near the sensor’s air inlet. The cavity volume near the sensor’s air inlet is generally less than 10 ml. Therefore, the recommended flow rate is usually measured in ml/min. When discussing flow, it's important to explain two ventilation modes: diffusion...