Fluidic oxygen sensor monitor

Details Fluidic oxygen sensor monitor Fluidic oxygen sensor monitor

1986-05-05

1987-12-01

Levy, Stewart J.

Measuring and testing

Gas analysis

Gas chromatography

G01N 700

Patent

active

047095750

ABSTRACT:
A fluidic bridge for determining the partial pressure of a gas has a positive pressure inlet for a reference gas and a sample gas and an ambient pressure outlet. The reference gas and the sample gas pass through a capillary passage and an orifice passage, and the pressure differential between the outlet of the reference capillary passage and the outlet of the sample capillary passage is a function of the density of the gas. A pressure ratio regulator is used to equalize the pressure of the reference gas and the sample gas applied to the inlets of the capillary passages. The length of the capillary passages and the flow characteristics of the orifice passages are adjustable to allow the bridge to be properly calibrated after being assembled.

REFERENCES:
patent: 3334513 (1967-08-01), Thomas
patent: 3771348 (1973-11-01), Villarroel
patent: 3817085 (1974-06-01), Stubbs
patent: 4008601 (1977-02-01), Woods
patent: 4100789 (1978-07-01), Joyce
patent: 4341108 (1982-07-01), Warncke et al.
patent: 4407153 (1983-10-01), Furlong et al.

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