“anemometer”的概念、定义、翻译、参考文献-科学参考

anemometer

Physics

An instrument for measuring the speed of the wind or any other flowing fluid. The simple vane anemometer consists of a number of cups or blades attached to a central spindle so that the air, or other fluid, causes the spindle to rotate. The instrument is calibrated to give a wind speed directly from a dial. The instrument can be mounted to rotate about a vertical axis, and in this form it also gives an indication of the direction of the wind. A hot-wire anemometer consists of an electrically heated wire that is cooled by the flow of fluid passing round it. The faster the flow the lower the temperature of the wire and the lower its resistance. Thus the rate of flow can be calculated by measuring the resistance of the wire.

Chemical Engineering

An instrument used to measure the speed of a gas such as air. It comprises cups or vanes that rotate freely and are linked to a tachometer. Hot-wire anemometers feature a heated wire over which the gas or air passes. Since the electrical resistance of certain metals such as tungsten is dependent on temperature, the cooling effect of the gas over the wire changes its resistance from which the velocity is inferred.

Geology and Earth Sciences

An instrument for measuring the speed of flow in a fluid. Meteorological anemometers measure wind speed. Most do so either from the rotation of a wind-driven turbine (‘rotating cups anemometer’) or from the wind pressure through a tube aligned by a vane to point into the wind (‘pressure-tube anemometer’).

单词	anemometer
释义	anemometer Physics An instrument for measuring the speed of the wind or any other flowing fluid. The simple vane anemometer consists of a number of cups or blades attached to a central spindle so that the air, or other fluid, causes the spindle to rotate. The instrument is calibrated to give a wind speed directly from a dial. The instrument can be mounted to rotate about a vertical axis, and in this form it also gives an indication of the direction of the wind. A hot-wire anemometer consists of an electrically heated wire that is cooled by the flow of fluid passing round it. The faster the flow the lower the temperature of the wire and the lower its resistance. Thus the rate of flow can be calculated by measuring the resistance of the wire. Chemical Engineering An instrument used to measure the speed of a gas such as air. It comprises cups or vanes that rotate freely and are linked to a tachometer. Hot-wire anemometers feature a heated wire over which the gas or air passes. Since the electrical resistance of certain metals such as tungsten is dependent on temperature, the cooling effect of the gas over the wire changes its resistance from which the velocity is inferred. Geology and Earth Sciences An instrument for measuring the speed of flow in a fluid. Meteorological anemometers measure wind speed. Most do so either from the rotation of a wind-driven turbine (‘rotating cups anemometer’) or from the wind pressure through a tube aligned by a vane to point into the wind (‘pressure-tube anemometer’).
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