Linear Hall effect oxygen sensor with auxiliary coil magnetic fi

Electricity: measuring and testing – Magnetic – Fluid material examination

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Details

73 27A, 324202, 324225, G01N 2774, G01R 3312

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active

046671579

ABSTRACT:
An oxygen sensor utilizes the paramagnetic property of oxygen to determing the relative concentration of oxygen in a test gas. The test gas is supplied to the core of an electromagnet or the gap of a permanent magnet. A known magnetic flux density for the electromagnet or permanent magnet are utilized in conjunction with a Hall effect sensor to determine a change in flux which is primarily due to the oxygen component of the test gas.

REFERENCES:
patent: 2930970 (1960-03-01), Vollmer
patent: 3049665 (1962-08-01), Hummel
patent: 3076929 (1963-02-01), Gillerman
patent: 4464296 (1984-08-01), Albarda et al.

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