The gas being investigated passes in a continuous stream through pipeline 1. A part of the gas, passing through valve 2, enters tube 3 in which diaphragm 4 is mounted. The pressure regulator, consisting of membrane 5 linked to valve 2, maintains a constant pressure drop over membrane 4 and, consequently, a constant flow of gas through the membrane. The pressure is adjusted by changing the compression of spring 7. Following diaphragm 4, the gas passes through an absorbing liquid in a vessel and the remainder is released through the hole in diaphragm 6 to the atmosphere. The pressure of the gas before diaphragm 6, measured by pressure gauge 8, depends upon the amount of the component to be determined, initially contained in the gas and absorbed by the liquid.
$4074$EHP,M$