功能

• This is a PM2.5 sampler that can measure the mass concentration of fine particulate matter (PM2.5) using a filter based on the Ministry of the Environment's Interim Measurement Manual for PM2.5.
• Airborne particulate matter in the ambient air is sucked from the suction port at a constant flow rate, and PM2.5 particles passing through the impactor are collected in the filter.
• Constant flow rate device with built-in temperature and pressure correction function suppresses the change of suction flow rate and keeps the particle separation characteristic of the impactor constant.
• The temperature of the filter section is controlled so that the difference from the outside air temperature is always within 5°C. This prevents re-volatilization of volatile substances contained in the collected PM2.5 particles.