The ASD-F1000 can directly read the concentration of dust particles in the air. The dust information was detected by the principle of light refraction. The sensor probe of the measuring instrument is designed with the air flow open and the optical path shielded to prevent dust pollution to the detecting element. It can be used in line with the monitoring system or other controllers for continuous monitoring of dust concentration in various dust workplaces. Strong scalability, can use solar panel power supply, wireless communication mode to send the relevant data information to the computer port monitoring system.