Measuring and testing – Volume or rate of flow – Thermal type
Reexamination Certificate
2006-06-27
2006-06-27
Lefkowitz, Edward (Department: 2855)
Measuring and testing
Volume or rate of flow
Thermal type
Reexamination Certificate
active
07066022
ABSTRACT:
In an air-velocity sensor and a method for operating an air-velocity sensor, the air-velocity sensor includes a temperature sensor arranged in an air flow and sequential electronics. The sequential electronics are used to cyclically impinge upon the temperature sensor with a define heat output and to determine the temperature rise time required by the temperature sensor to heat up to a given temperature difference after being impinged upon with the heat output. Temperature measurements are performed at a defined measuring frequency. The velocity of the air flow is determined on the basis of temperature rise time.
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E+E Elektronik Ges.m.b.H.
Kenyon & Kenyon
Lefkowitz Edward
Thompson Jewel V.
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