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2001•IEEE Transactions on Instrumentation and MeasurementRequires access

Hot-wire anemometer with temperature compensation using only one sensor

R.P.C. Ferreira, Raimundo C. S. Freire, C.S. Deep, José Sérgio da Rocha Neto, Adriano Costa de Oliveira

Open publisher page 45 citations

Abstract

In conventional constant temperature hot-wire anemometers, the compensation for the fluid temperature is done by using two sensors. In this paper, the analysis of an anemometer circuit using only one sensor, operating alternately at two different temperatures is presented. The effect of the amplifier input offset voltage is taken into account, and its influence on the measurement of fluid velocity is quantified. Preliminary experimental results are also presented.

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What this paper is about

In conventional constant temperature hot-wire anemometers, the compensation for the fluid temperature is done by using two sensors. In this paper, the analysis of an anemometer circuit using only one sensor, operating alternately at two different temperatures is presented. The effect of the amplifier input offset voltage is taken into account, and its influence on the measurement of fluid velocity is quantified. Preliminary experimental results are also presented.

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Available abstract

In conventional constant temperature hot-wire anemometers, the compensation for the fluid temperature is done by using two sensors. In this paper, the analysis of an anemometer circuit using only one sensor, operating alternately at two different temperatures is presented. The effect of the amplifier input offset voltage is taken into account, and its influence on the measurement of fluid velocity is quantified. Preliminary experimental results are also presented.

Key concepts: Anemometer, Compensation (psychology), Temperature measurement, Offset (computer science), Amplifier, Voltage, Materials science, Electrical engineering

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