Measuring and testing – With fluid pressure – Porosity or permeability
Patent
1977-06-23
1978-10-03
Queisser, Richard C.
Measuring and testing
With fluid pressure
Porosity or permeability
73 61R, 116DIG25, G01N 1500
Patent
active
041177177
ABSTRACT:
A device is provided for detecting the presence of solid impurities within a pressurized fluid. The device comprises a housing having a fluid passageway formed therein. One end of the fluid passageway is open to the pressurized fluid, preferably via a restricted port, while the other end of the fluid passageway is open to a low pressure fluid region. A filter element is disposed across and obstructs the fluid flow through the passageway at a point intermediate its ends so that the filter element removes solid particles from fluid flowing through the passageway. A pressure sensing means, such as a pressure transducer, communicates with the fluid passageway between the pressurized fluid and the flter element. An increase of fluid pressure sensed by the pressure sensing means is indicative of a clogged filter element which, in turn, indicates the presence of solid impurities within the pressurized fluid. Appropriate indicating means are coupled to the pressure sensing means to provide a signal upon the occurrence of the aforementioned increase of fluid pressure.
REFERENCES:
patent: 3033030 (1962-05-01), Heller
patent: 3325010 (1967-06-01), Sackett
patent: 3413855 (1968-12-01), Bloom
patent: 3499315 (1970-03-01), Marino
patent: 3583218 (1971-06-01), Van Nostrand, Sr.
patent: 3696666 (1972-10-01), Johnson et al.
patent: 3939457 (1976-02-01), Nelson
patent: 4014209 (1977-03-01), Emerick
patent: 4033733 (1977-07-01), Nelson
Queisser Richard C.
Roskos Joseph W.
Teledyne Industries Inc.
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