Measuring and testing – Volume or rate of flow – Using differential pressure
Patent
1997-06-30
1999-06-15
Dombroske, George
Measuring and testing
Volume or rate of flow
Using differential pressure
G01F 132
Patent
active
059132493
ABSTRACT:
Measuring detector and system for the measurement of gas flow, especially for the measurement of the pressure and/or flow of a patient's respiratory gas. The surface of the wall (2) of a flow channel (1) and/or the surface of a restricting element (3), said surface being in direct contact with the gas flow to be measured, is provided with an agent for reducing the contact angle (.theta.) of a water drop or a drop containing water to said surface in relation to the contact angle formed between a corresponding water drop and a corresponding surface not treated with such agent.
REFERENCES:
patent: 4403514 (1983-09-01), Osborn
patent: 5088332 (1992-02-01), Merilainen et al.
patent: 5111827 (1992-05-01), Rantala
patent: 5277196 (1994-01-01), Hankinson et al.
patent: 5379650 (1995-01-01), Kofoed et al.
Dombroske George
Instrumentarium Oy
Thompson Jewel V.
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