Device for measuring the permeability of a membrane to water vap

Details Device for measuring the permeability of a membrane to water vap Device for measuring the permeability of a membrane to water vap

1993-09-27

1995-02-21

Williams, Hezron E.

Measuring and testing

With fluid pressure

Porosity or permeability

250343, G01N 1508, G01N 2117

Patent

active

053905393

ABSTRACT:
A system for measuring the permeability of membranes, particularly with reference to water vapor, utilizing a diffusion cell having a first water vapor chamber and a second gas flow chamber, the chambers being separated by the membrane to be tested. Gas flow through the gas flow chamber is conveyed to an infrared gas analyzer and to a gas flow sensor; the infrared analyzer provides an electrical signal representative of the water vapor content of the gas, and the gas flow sensor provides a signal representative of the rate of gas flow through the system; the analyzer signal is conveyed to an amplifier and the gas flow sensor signal is utilized to adjust the gain of the amplifier, the output of the amplifier thereby presenting a water vapor signal which has been adjusted to compensate for air flow through the system.

REFERENCES:
patent: 2878388 (1959-03-01), Bergson
patent: 3498110 (1970-03-01), Brun
patent: 3604246 (1971-09-01), Toren
patent: 3618361 (1971-11-01), Stephens et al.
patent: 3901820 (1975-08-01), Wood
patent: 4464927 (1984-08-01), Reid

Affiliated with

Also associated with

Rating

Device for measuring the permeability of a membrane to water vap does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Device for measuring the permeability of a membrane to water vap, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for measuring the permeability of a membrane to water vap will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1922932