The presentation of usage of liquid column manometer. The correct use method and error correction of U tube manometer and double tube differential pressure gauge were analysed. 主要介绍了液柱压力计的正确使用方法和误差分析。给出了U型管压力计和双管差压计的测量精度。
Liquid column manometer reading measured based on the machine vision was proposed, which was shown that efficient and effective through the experimental study. 提出基于机器视觉的液柱式压力计读数方法,并通过实验研究证明该方法是有效可行的。