Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent
1977-09-07
1979-03-06
Corcoran, Robert J.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Frequency of cyclic current or voltage
73 19, 73 23, 55158, 204195P, G01N 2700, G01N 2762
Patent
active
041433165
ABSTRACT:
A diffusion tube hydrogen meter for improving the sensitivity and response time for the measurement of hydrogen in liquid sodium. The improved hydrogen meter has a composite membrane composed of pure nickel sleeve fitted, for example, over a 2 1/4 Cr-1 Mo steel or niobium diffusion tube. Since the hydrogen permeation rate through 2 1/4 Cr-1 Mo steels is a factor of four higher than pure nickel, and the permeation rate of hydrogen through niobium is two orders of magnitude greater than the 2 1/4 Cr-1 Mo steel, this results in a decrease in response time and an increase in the sensitivity.
REFERENCES:
patent: 3350846 (1967-11-01), Makrides et al.
patent: 3731523 (1973-05-01), Vissers et al.
patent: 3886444 (1975-05-01), Roy et al.
Hartle Robert T.
Roy Prodyot
Sandusky David W.
Carlson Dean E.
Carnahan L. E.
Corcoran Robert J.
Gaither R. S.
The United States of America as represented by the United States
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