Sensor temperature control in a thermal anemometer

Details Sensor temperature control in a thermal anemometer Sensor temperature control in a thermal anemometer

2005-06-14

2005-06-14

Verbitsky, Gail (Department: 2859)

Thermal measuring and testing

Temperature measurement

Combined with diverse art device

C073S202500, C374S024000

Reexamination Certificate

active

06905242

ABSTRACT:
A thermal anemometer that separates sensor heating from sensor temperature measurement through a switched sampling technique. This approach demonstrates several advantages over the more typical circuitry employing a bridge, which simultaneously heats the sensor and senses the ambient and velocity sensor temperature. In a thermal anemometer in accordance with the present invention, sensor temperature is determined by sampled measurement of its resistance. Sensor temperature is controlled by varying the voltage applied to the sensor with an error value determined by the difference between actual sensor resistance and the desired resistance.

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