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Fluid Statics

Manometers and Gauges for Fluid Pressure

Description

Fluid pressure is measured with manometers and related gauges. These tools use a liquid column to show pressure differences. The height of the column gives a simple reading of the force the fluid exerts.

A basic manometer is the piezometer. It is a vertical tube that is open at the top and filled...

Transcript

流体压力通过垂直或倾斜的液柱管进行测量,这种装置称为压强计。液柱的高度决定了压力差。

最简单的压力计是用于测量压力的测压管。它是一根顶部开口、底部与容器相连的垂直管,利用管内相同的流体来指示压力。

另一种常用的压强计是U形管压强计,它由一个U形管连接到流体源组成。U形管中装有一种不同的液体,称为指示液,该液体不与待测压强的流体混合。

倾斜管压差计有一支管倾斜,内含不与被测流体混合的指示液,通过沿倾斜方向读取压力差,以提高测量灵敏度。

U形管和倾斜管压差计常用于测量系统中两个容器或两点之间的压力差。

其他压力计包括用于测量流体或气体压力的波登管压力计,以及用于测量大气压力的无液气压计。

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