Measuring and testing – Volume or rate of flow – Thermal type
Patent
1986-10-30
1989-01-03
Goldstein, Herbert
Measuring and testing
Volume or rate of flow
Thermal type
7320415, 7320418, 341140, G01F 168
Patent
active
047947942
ABSTRACT:
A thermal anemometer, including a constant temperature anemometer bridge excitation circuit together with multiple signal comparators and a tapped resistance reference divider, providing a linearized digital output signal, together with a digitally controlled output section that presents a simultaneous linear analog output signal. All logic switching is actuated by the anemometer signal itself. Both unipolar (non-directional) and bipolar (directional) constant temperature anemometer signals are linearized, digitized, and processed with a minimum number of steps and component parts to provide simultaneous digital and analog output signals. Generic transducer electrical output signal digitizing is disclosed.
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"Modern Developments in Fluid Dynamics" edited by S. Goldstein, composed by the Fluid Motion Panel of the Aeronautical Research Committee and Others, vol. 1, pp. 21-26, 36-41 and 59-65.
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