The 5102 online laser dust particle counter is used to measure the size and number of dust particles per unit volume of air in a clean environment, and transmit the number of corresponding particles to the host computer through MODBUS485 communication. It can control the clean environment with cleanliness level of 100,000 to 100. This instrument adopts imported semiconductor laser light source, small in size, light in weight, high in detection accuracy, and computer controlled. As long as the instrument is