SAMPLING APPARATUS FOR MEASURING DUST PARTICLE SIZE DISTRIBUTION

摘要

PURPOSE:To elevate the efficiency with a easier measurement of a time-wise sampling amount by arranging an injection port of a nozzle to be a flat plate having a number of pores and a thin slot with a trapping plate being continuously moved horizontally in one direction to obtain a trapping layer with an even thickness. CONSTITUTION:Several hood bodies 2 are connected separably and a sample gas introduction port 1 is provided at one end thereof while a sample gas intake port 10 at the other end thereof. They are also divided inside to form a cylinder chamber 4 with nozzles 5 having the specified diameters communicating with each other and with a trapping plate 8 arranged therebelow so as to get dust attached thereto. The injection port of the nozzle 5 is made as a flat plate having numerous pores previously arranged and one thin slot. The trapping plate 8 is built on a receiving surface moving continuously in one way through a driving shaft 9.