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US 2004/0167419 A1Published application
Flow meter arrangement
AssigneeMaquet Critical Care AB
InventorKiomars Fathollahzadeh
Life of this patent
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Abstract
A flow meter arrangement has a venturi-type flow meter having a tubular flow channel for conveying a gas flow to be measured and in which there is provided a constriction. The arrangement further has a hot wire flow meter having a sensing element located within the flow channel and a measurement system that receives an output from the venturi-type flow meter and an output from the hot wire flow meter, and that determines a gas flow rate therefrom.
Claims5
A flow meter arrangement comprising:
- a venturi-type flow meter having a tubular flow channel for conveying a gas flow to be measured, said venturi-type flow meter emitting an output;
- a hot wire flow meter having a sensing element disposed in said flow channel of said venturi-type flow meter, said hot wire flow meter generating an output;
- and
- a measurement system connected to said venturi-type flow meter and to said hot wire flow meter to receive the respective outputs therefrom, said measurement system determining a gas flow rate in said flow channel from said output.
1 more element
Dependencies are inferred from the claim text.