As the core equipment for environmental monitoring, the measurement accuracy of dust sensors directly affects the reliability of air quality assessment, process control, and safety warning. However, in practical applications, accuracy deviation and calibration issues often become the focus of user attention, requiring in-depth analysis from three aspects: technical principles, environmental interference, and maintenance strategies. The measurement principle of dust sensors (such as laser scattering, beta ray absorption, electrostatic induction, etc.) determines their sensitivity to environmental factors as the root cause of accuracy deviation. Taking laser scattering sensors as an example, their accuracy deviation may be due to the following factors: influence of particle characteristics: particles with different sizes, shapes, and refractive indices

Under the dual drive of technological iteration and scenario extension, the competitive logic of the flame detector industry is shifting from single product competition to ecological capability competition. This trend is reflected in the deep collaboration between the upstream and downstream of the industrial chain, innovation in service models, and accelerated globalization layout. The collaborative solution of the industrial chain to overcome the bottleneck of localization is the key to breaking through the technological blockade in the upstream core components of the industry. A certain enterprise has successfully developed a domestically produced infrared focal plane array chip through cooperation with a research institute, reducing the manufacturing cost of detectors by 35% and increasing the detection distance from 30 meters to 50 meters. In the field of sensors, a company has developed a sun blind ultraviolet sensor

What are the reasons for the long response time? Response time refers to the time required for a sensor to come into contact with a target gas and output a stable signal. Long response time can affect the real-time monitoring ability of sensors for changes in gas concentration. The gas diffusion rate is one of the important factors affecting the response time. If the gas diffusion channel design of the sensor is not reasonable, such as a small aperture or a long channel, it will hinder the rapid diffusion of the target gas to the surface of the sensitive material, thereby prolonging the response time. For example, in some portable gas sensors, if the air inlet is not designed properly, the speed of gas entering the interior of the sensor will slow down, resulting in an increase in response time

With the popularization of IoT technology, switch sensors are transforming from traditional functional devices to the core interactive entrance of smart home scenarios. By integrating with technologies such as voice control and machine vision, switch sensors are reconstructing the perception and control of home spaces. The refinement upgrade of environmental perception in air quality monitoring scenarios. A MEMS gas sensor developed by a certain enterprise integrates temperature and humidity compensation algorithms, which can simultaneously detect PM2.5, CO ₂, and VOC concentrations, and trigger the automatic start stop of the fresh air system through threshold values. In a high-end residential project, the system maintains the indoor CO ₂ concentration below 800ppm, which is relatively low

In the context of the transformation of industrial automation towards intelligence and flexibility, switch sensors, as the fundamental components for equipment status monitoring and process control, continue to expand in both depth and breadth of application. From discrete manufacturing to process industry, switch sensors have become a key node for achieving device interconnection and data exchange by accurately sensing physical quantities such as position, pressure, and liquid level. The flexible production support of discrete manufacturing industry is in the discrete manufacturing fields such as automobiles and electronics, and switch sensors are the basic sensing units of flexible production lines. Taking the automobile welding production line as an example, a high-temperature resistant magnetic switch sensor developed by a certain enterprise can withstand an instantaneous high temperature of 300 ℃, and has been tested