| 摘要 |
PURPOSE:To measure separability or permeability of a very small quantity gas which permeates through a permeable membrane by constituting a titled structure of a vessel into which a sample gas is put first and a vessel for collecting permeating gas, and constituting so that the airtightness is held by placing the permeable membrane between both vessels. CONSTITUTION:First of all, the gas in the second vessel 2 is discharged from a pipe 11, and subsequently, the gas in the first vessel 1 is discharged from a pipe 9 or 10. A force applied to a permeable membrane 5 at the stage of discharge is received by a membrane supporting base 12. Subsequently, a sample gas is put in from the pipe 9 and discharged from the pipe 10. The pipe 9 is extended to the vicinity of the surface of the permeable membrane 5, therefore, a fresh gas always flows circularly through the vicinity of the permeable membrane 5. The gas which leaks into the second vessel 2 from the first vessel 1 through the permeable membrane 5 is stored in the second vessel 2 for a constant interval of time, and thereafter, it is led into a gas analyzing device through the pipe 11. In this way, separability or permeability of a very small quantity gas which permeates through the membrane is measured. |
