Single-element thermal conductivity detector

Details Single-element thermal conductivity detector Single-element thermal conductivity detector

1991-08-22

1993-11-30

Williams, Hezron E.

Measuring and testing

Gas analysis

By thermal property

422 96, G01N 2518

Patent

active

052654591

ABSTRACT:
A Wheatstone bridge type thermal conductivity sample gas detector. A sensing element comprising one arm of the bridge is disposed in a constant temperature oven. A variable resistor, which functions as a reference element, and two fixed resistances comprise the second, third, and fourth arms of the bridge. Carrier gas is circulated around the sensing element and the bridge is balanced by use of the variable resistor. Thereafter, any unbalance of the bridge is caused by sample gas intermingling with the carrier gas, thereby providing a signal representation of the sample.

REFERENCES:
patent: 2279231 (1942-04-01), Gier, Jr.
patent: 2687342 (1954-09-01), Strange et al.
patent: 2751777 (1956-06-01), Cherrier
patent: 2876064 (1959-03-01), Yant et al.
patent: 3305000 (1967-02-01), Bullen et al.
patent: 3519391 (1970-07-01), Winter et al.
patent: 3864959 (1975-02-01), MacDonald
patent: 4254654 (1981-03-01), Clouser et al.
patent: 4312213 (1982-06-01), Schlau
patent: 4443793 (1984-04-01), Hall
patent: 4854155 (1989-08-01), Poli

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