目前国内外生产的汽车用机油压力表,除弹簧管式以外,压力表一般由压力表指示器(原习惯称压力表)和压力表传感器组成。指示器的结构型式一般有电磁式和双金属式(有叫电热式的)二种,传感器的结构型式一般有可变电阻式和双金属式二种。国内几乎所有汽车仪表生产工厂都生产双金属式汽车用机油压力表指示器及其传感器, At present, domestic and foreign production of automotive oil pressure gauges, with the exception of the spring tube type, the pressure gauge is generally composed of pressure gauge indicator (formerly known as pressure gauge) and pressure gauge sensor. The structure of the indicator generally has two types of electromagnetic and bimetallic (called electric heating type), the sensor structure is generally variable resistance and bimetallic two kinds. Almost all domestic automobile instrument manufacturing plant produces bimetallic motor oil pressure gauge indicator and its sensors,