Measuring and testing – Volume or rate of flow – Thermal type
Reexamination Certificate
2007-02-22
2009-02-17
Thompson, Jewel (Department: 2855)
Measuring and testing
Volume or rate of flow
Thermal type
Reexamination Certificate
active
07490511
ABSTRACT:
The flow sensor comprises a heater arranged between two sensing thermopiles. In addition, at least one monitoring thermocouple is provided for measuring the temperature of the heater. The signal from the monitoring thermocouple is used as a reference voltage for an A/D converter, which converts the signals from the sensing thermopiles. This allows to increase the resolution of the converter at higher flows, which results in more accurate measurements.
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Hornung Mark
Lechner Moritz
Mayer Felix
von Waldkirch Marc
Cooper & Dunham LLP
Sensirion AG
Thompson Jewel
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