基于多种物理原理，有多种测量压力的方法。它们分为两大类，直接压力表和间接压力表。直接压力表包括活塞压力计和液体压力计，其中压力直接导致活塞运动，并附有一个指针，沿着校准的刻度。在液体压力计中，压力是通过 U 形玻璃管中的水柱或汞柱的位移来表示的。隔膜压力表和波登管压力表的测量基于压力使某些测量元件变形的力。另一种测量压力的间接方法是基于压力与压力传感器检测到的某些电效应之间的关系。

　　原文：

　　There are various methods for measuring pressure, based on a variety of physical principles. They fall into two broad categories, direct pressure gauges and indirect pressure gauges. Direct pressure gauges include the piston manometer, in which the pressure directly causes the movement of a piston, with a pointer attached, along a calibrated scale, and liquid manometers. In liquid manometers, pressure is indicated by the displacement of a column of water or mercury in a U-shaped glass tube. Measurement with diaphragm pressure gauges and Bourdon tube gauges is based on the force with which the pressure deforms certain measuring elements. Another indirect method for gauging pressure is based on the relationship between pressure and certain electrical effects that are detected by pressure sensors.