Integrated miniaturized sensor for measuring total dissolved gas

Details Integrated miniaturized sensor for measuring total dissolved gas Integrated miniaturized sensor for measuring total dissolved gas

1990-05-21

1992-06-16

Noland, Tom

Measuring and testing

Gas content of a liquid or a solid

By pressure of the gas

73 3104, G01N 710

Patent

active

051216272

ABSTRACT:
Pressure sensing device having a housing (12) with a bottom wall (14) and interior surface (16) and having upstanding edge wall (18) around the periphery of said housing (12). A layer (22) supports a pressure sensing element (30) and its circuitry. A porous gas permeable support layer (40) overlies said pressure sensing element (30) and includes a gas chamber (42) adjacent to the pressure sensing element (30). A gas permeable membrane (50) is supported on said support layer (40). The elements are sealed with respect to the housing as is wire or cable (32) leading from the pressure sensing element (30) to instrumentation remote from the sensing device for readout of measurements by the sensor device (10).

REFERENCES:
patent: 4461165 (1984-07-01), Kesson
patent: 4463593 (1984-08-01), Parker
patent: 4656454 (1987-04-01), Rosenberger
patent: 4662210 (1987-05-01), D'Aoust
patent: 4702102 (1987-10-01), Hammerton

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