Anemometer, as the name suggests, is an instrument for measuring air flow rate, with high sensitivity and accurate measurement, low power consumption, and easy use, widely used in power, steel, petrochemical, energy saving and other industries. With the application of anemometers in different industries, the types of anemometers are constantly increasing. The following Xiao Bian will introduce you to the common anemometer: Anemometer, as the name suggests, is an instrument for measuring air flow rate, with high sensitivity and accurate measurement, low power consumption, and easy use, widely used in power, steel, petrochemical, energy saving and other industries. With the application of anemometers in different industries, the types of anemometers are constantly increasing. The following Xiao Bian will introduce you to the common anemometer: 2. Acoustic anemometer: The wind speed component in the sound propagation direction will increase (or decrease) the sound wave propagation speed. Acoustic anemometers made with this characteristic can be used to measure the wind speed component. Acoustic anemometers have at least two pairs of sensing elements. Each pair consists of a sounder and a receiver, so that the sound waves of the two sounders travel in opposite directions. 3, cup anemometer: It is the most common kind of anemometer. The rotary cup anemometer was first invented by Rubinson of the United Kingdom. At the time, it was four cups and later three cups. The three parabolic or hemispherical empty cups that are fixed to each other on the shelf are all on one side, and the entire shelf, together with the wind cup, is mounted on a freely rotatable shaft. The wind cup rotates around the shaft under the influence of wind, and its speed is proportional to the wind speed. Speed ​​can be recorded with electrical contacts, tachometer generators or photoelectric counters. 4. Hot wire anemometer: A wire heated by an electric current, which is cooled by the flowing air, uses a linear relationship between the heat dissipation rate and the square root of the wind speed, and is then linearized by the electronic circuit (in order to facilitate calibration and reading). Hotline anemometer. The above content is the kind of anemometer that Xiaobian introduced for everyone. Due to the wide application of anemometers, in order to ensure the accuracy of measurement, we hope that everyone can use the anemometer correctly to avoid errors and failures. Pallet Strapping Machine,Automatic Vertical Strapper,Horizontal Pallet Strapping Machine,Arrow Type Strapping Machine Changchun Rochiev Intelligent Equipment Manufacturing Co., Ltd. , https://www.rochiev-en.com
1. Propeller anemometer: It is an anemometer with a set of three- or four-blade propellers rotating about a horizontal axis. The propeller is mounted on the front of a weather vane so that its plane of rotation is always facing the direction of the wind, and its speed is proportional to the wind speed.
If a 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 elements are installed in both horizontal and vertical directions, the horizontal wind speed, wind direction, and vertical wind speed can be calculated separately. Due to the advantages of anti-jamming and good directivity, ultrasonic sound waves emitted by acoustical anemometers are mostly in the ultrasonic section.
The hot wire wind speed meter is divided into two types, the side heating type and the direct heating type. The hot side heating wire is generally a manganese copper wire, and its temperature coefficient of resistance is close to zero, and its surface is provided with a temperature measuring element. The direct thermal type hot wire is mostly platinum wire, and the temperature of the hot wire itself can be directly measured while measuring the wind speed. The hot wire anemometer has a high sensitivity at small wind speeds and is suitable for measuring small wind speeds. Its time constant is only a few hundredths of a second and is an important tool for atmospheric turbulence and agro-meteorological measurements.