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Dust refers to solid particles suspended in the air. *Dust is commonly given many names, such as dirt, dust particles, soot, mineral dust, sand dust, powder, etc., and there is no clear distinction between these terms. The International Organization for Standardization defines solid suspensions with a particle size of less than 75 μm as dust. The presence of dust in the atmosphere is one of the main factors that help maintain Earth’s temperature; too much or too little dust in the atmosphere can have catastrophic effects on the environment. However, in daily life and at work, productive dusts are enemies of human health and the main cause of various diseases. Dust sensors (www.zgtdkj.net/SonList-1803239.html) are high-tech sensors developed based on the principle of laser scattering to meet the need for monitoring dust concentrations in existing coal mines. They are capable of continuously and in real time measuring and displaying the dust concentration underground under natural airflow conditions. At the same time, they generate digital signals related to the operation of dust suppression devices such as water sprayers, thereby enabling effective dust measurement and suppression. Let’s now take a look at the technical features of dust sensors. (1) It has a low rated operating current, which reduces the load on the power supply at the monitoring station; it can therefore be installed at a greater distance from such stations. At the rated sampling flow rate, the overall rated operating current is ≤120mA, while the maximum operating current is ≤180mA. (2) It features a wide input voltage range, allowing it to be used in various monitoring stations in coal mines. The instrument can operate properly within an input voltage range of 12V–24VDC (intrinsic safety power supply). (3) It offers high measurement accuracy: a segmented control algorithm is used, with different proportionality factors applied automatically depending on the concentration level. Additionally, a temperature compensation function is included to further improve accuracy. (4) It has an automatic zero-point calibration function, and it’s possible to set a time for calibrating the zero point. (5) It features a soft-start mode, which reduces the impact on the power supply during startup; the maximum startup current is ≤130mA. (6) It supports online calibration, allowing direct calibration using the CCGZ-1000 type direct-reading dust meter. (7) The measurement range can be set to either 0–500mg/m3 or 0–1000 mg/m3, depending on requirements. (8) It can measure either instantaneous or average dust concentrations, with the measurement time for the average concentration able to be selected within a range of 1–3600 seconds.