Patent ID: 9518904
Filing Date: 2016-12-13
CPC Classification: C01B,G01N

Claim Text:
1. A method of determining a concentration level for impurities in a gas sample that is mostly hydrogen, said method comprising the steps of: providing a hydrogen separator wherein a collection space and a diffusion space are separated by a hydrogen permeable membrane; filling said collection space with said gas sample, wherein said hydrogen permeates through said hydrogen permeable membrane into said diffusion space, therein providing said diffusion space with a partial pressure of hydrogen; sweeping said diffusion space with a sweep gas, therein lowering said partial pressure of hydrogen in said diffusion space; measuring a pressure in said collection space, wherein said pressure is indicative of said concentration level for said impurities in said gas sample; and removing said impurities from said collection space by introducing hydrogen into said diffusion space, wherein hydrogen diffuses through said hydrogen permeable membrane into said collection space to displace said impurities.