Patent ID: 7325439

Claim:
A system for measuring permeance parameters of a tubular material, the system comprising: a tube having a first end and a second end and having a hollow passageway with a calibrated resistance, and the tube comprising a permeable section with an outer surface; a first fluid source configured to feed a first fluid at a first pressure into the hollow passageway at the first end of the tube; a second fluid reservoir configured to surround at least a portion of the outer surface of the permeable section of the tube with a second fluid and to infuse a quantity of the second fluid by permeation into the hollow passageway of the tube and thereby form in the hollow passageway a mixture of the second fluid and the first fluid at a concentration level; a pressure gauge in pressure communication with the hollow passageway at the second end of the tube, the pressure gauge configured to measure a second pressure of the mixture of the first fluid and the second fluid at the second end of the tube; and a concentration meter in fluid communication with the hollow passageway at the second end of the tube, the concentration meter configured to measure the concentration level of the second fluid in the mixture.