Measuring and testing – Gas analysis – Moisture content or vapor pressure
Patent
1980-01-17
1981-07-07
Woodiel, Donald O.
Measuring and testing
Gas analysis
Moisture content or vapor pressure
73705, 73729, G01K 564, G01L 706, G01L 900
Patent
active
042767768
ABSTRACT:
A temperature or pressure gauge capable of providing a magnified output indication of a respective sensed temperature or pressure of a fluid. Overlapping surfaces are movable relative to one another in response to sensed changes in temperature or pressure of a fluid. Each surface is provided with an aperture, a light controlling edge, or an indicator which overlaps and intersects at an acute angle a respective aperture, edge or indicator on the other surface. Rotary motion or other motion induced by the sensing element is translated into linear movement of the point of intersection of the two apertures, edges or indicators, the linear movement being greater in magnitude than the movement of the sensing element. This gauge is suitable for strip chart recording, for visual observation or for electrooptical reading. Where the gauge is adapted for electrooptical reading, a light source illuminates the point of intersection and a photo sensor array produces a signal indicating the location of the point of intersection. This signal may be translated into a readout of the temperature or pressure or it may be used to activate a control mechanism.
REFERENCES:
patent: 3100997 (1963-08-01), Lorenz
patent: 3119270 (1964-01-01), Wayne
patent: 3159750 (1964-12-01), Kazan
patent: 4166383 (1979-09-01), Lapeyre
The Laitram Corporation
Woodiel Donald O.
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