What are the classifications of anemometers
The rotating cup anemometer was first invented by Robinson in England. At that time, there were four cups, and then three cups were used. The three parabolic or hemispherical empty cups fixed on the frame are all along one side, and the whole frame together with the wind cup is mounted on a shaft that can rotate freely.
Cup anemometer
It is the most common type of anemometer. The rotating cup anemometer was first invented by Robinson in England. At that time, there were four cups, and then three cups were used. The three parabolic or hemispherical empty cups fixed on the frame are all along one side, and the whole frame together with the wind cup is mounted on a shaft that can rotate freely. Under the action of wind force, the wind cup rotates around its axis, and its rotational speed is proportional to the wind speed. The speed can be recorded by electrical contacts, tachogenerators or photoelectric counters.
propeller anemometer
It is an anemometer with a set of three or four bladed propellers rotating around a horizontal axis. The propeller is mounted on the front of a weathervane so that its plane of rotation is always facing the direction of the wind, and its rotational speed is proportional to the wind speed.
Anemometer
Classification of anemometers
The rotary cup anemometer was first invented by Robinson in England.
It was four cups, and later changed to three cups. The three parabolic or hemispherical empty cups fixed on the frame are all along one side, and the whole frame together with the wind cup is mounted on a shaft that can rotate freely. Cup anemometer It is the most common type of anemometer. The rotating cup anemometer was first invented by Robinson in England. At that time, there were four cups, and then three cups were used. The three parabolic or hemispherical empty cups fixed on the frame are all along one side, and the whole frame together with the wind cup is mounted on a shaft that can rotate freely. Under the action of wind force, the wind cup rotates around its axis, and its rotational speed is proportional to the wind speed. The speed can be recorded by electrical contacts, tachogenerators or photoelectric counters. Xi'an Chaoxi Electronic Technology Co., Ltd. supplies various types of anemometers such as digital anemometers, multi-functional anemometers, and intelligent pressure anemometers. Regional anemometer suppliers.
propeller anemometer
It is an anemometer with a set of three or four bladed propellers rotating around a horizontal axis. The propeller is mounted on the front of a weathervane so that its plane of rotation is always facing the direction of the wind, and its rotational speed is proportional to the wind speed. Anemometer A metal wire heated by an electric current, and the flowing air makes it dissipate heat. Using the linear relationship between the heat dissipation rate and the square root of the wind speed, and then linearizing it through an electronic circuit (for scale and reading), an anemometer can be made. There are two types of wind speed scoring: side heating type and direct heating type. The side heating type is generally manganese copper wire, its temperature coefficient of resistance is close to zero, and a temperature measuring element is installed on its surface.
The direct heating type is mostly platinum wire, which can directly measure its own temperature while measuring the wind speed. The anemometer has high sensitivity at small wind speeds and is suitable for small wind speed measurements. With a time constant of only a few hundredths of a second, it is an important tool for atmospheric turbulence and agrometeorological measurements.
Acoustic Anemometer
The wind speed component in the sound wave propagation direction will increase (or decrease) the sound wave propagation speed, and the acoustic anemometer made by using this characteristic can be used to measure the wind speed component. Acoustic anemometers have at least two pairs of sensing elements, each pair consisting of a sounder and a receiver. Make the propagation directions of the sound waves of the two sound generators opposite. If one group of sound waves propagates along the wind speed component and the other group happens to travel against the wind, the time difference between the two receivers receiving the sound pulse will be proportional to the wind speed component. If two pairs of components are installed in the horizontal and vertical directions at the same time, the horizontal wind speed, wind direction and vertical wind speed can be calculated respectively. Because ultrasonic waves have the advantages of anti-interference and good directivity, the frequency of sound waves emitted by acoustic anemometers is mostly in the ultrasonic band.
