Yao, X.; Shen, F.; Zheng, Y.; Xiao, T. An Assembled Hot Wire Anemometer Design. Journal of Measurements in Engineering 2024, doi:10.21595/jme.2023.23637.
Yao, X.; Shen, F.; Zheng, Y.; Xiao, T. An Assembled Hot Wire Anemometer Design. Journal of Measurements in Engineering 2024, doi:10.21595/jme.2023.23637.
Yao, X.; Shen, F.; Zheng, Y.; Xiao, T. An Assembled Hot Wire Anemometer Design. Journal of Measurements in Engineering 2024, doi:10.21595/jme.2023.23637.
Yao, X.; Shen, F.; Zheng, Y.; Xiao, T. An Assembled Hot Wire Anemometer Design. Journal of Measurements in Engineering 2024, doi:10.21595/jme.2023.23637.
Abstract
The hot wire anemometer is a commonly used device for measuring air speed in laboratories. In this paper, the relationship between air speed and the hot wire temperature in different air speed ranges was analyzed based on the theory of thermal equilibrium. A measurement circuit and hot wire shape were designed based on the principle of the hot wire anemometer, and the linear relationship between current and temperature in the hot wire at different air speeds was verified in an adjustable air speed field. The measured current was used to represent air speed. The designed hot wire anemometer was experimentally validated to provide measurement results that match the theoretical values in different air speed ranges. Finally, the sensitivity of the anemometer in different measurement ranges was determined based on the uncertainty of the instrument's sensitivity and the measurement formula.
Keywords
hot wire; anemometer; uncertainty; sensitivity
Subject
Engineering, Industrial and Manufacturing Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
