Patent ID: 7266991
Filing Date: 2007-09-11
Classification: G01M,G01N

Abstract:
1. A gas detection sensor for detecting at least one of hydrogen and helium, said sensor comprising: a vacuum-tight housing; a gas consuming cold cathode array arranged in said housing; and a selectively active passage for the gas to be detected wherein said housing is made from glass, said selectively active passage including a membrane made from a silicon material having desired selective qualities, a silicon plate supporting said membrane, and a heating element, said silicon plate having a plurality of openings and in which said housing and said selectively active passage are joined together without use of polymers or elastomers wherein the housing and the selectively active passage are joined together by at least one of anionic bonding and diffusion welding in a high-vacuum tight manner and in which the housing consists of borosilicate glass.