Particle size, filters pollutants, using diameter 47 mm, number 3 and install it into the tunnel through the exhaust sample dilution dilution (Dilution Tunnel) vault, for example, is made of material that does not rust.
Filter pollutants, particle size to a diameter of 47 mm, and a set of three mounted to the tunnel through which the diluted exhaust dilution (Dilution Tunnel) sampling unit made from a material that will not rust.
Sheet size filter pollutants particle diameter, the use 47 mm 3 series and ติดตั้งเข้าก with dilution exhaust through the tunnel sample dilution. (Dilution Tunnel) series samples made from materials that do not rust