壓力表用來準確地測量蒸汽鍋爐上所需丈量部位壓力的大小，也是保證設備和人身的平安以及經濟運行的重要措施。壓力表主要用以監視給水泵運行是否正常及測量給水母管壓力。
1．蒸汽鍋爐經常使用的壓力表有：液柱式壓力計：包括有v型管壓力計、單管壓力計、傾斜式微壓計等。彈性壓力計：單圈彈簧管壓力計、多圈彈簧管壓力計、膜盒式風壓計等。遠傳式壓力計：如電接點式壓力計等。
Gauge steam boiler frequently used are: liquid column manometer: including v-tube manometer, single-tube manometer, inclined micro-pressure meter. Flexible gauge: lap Bourdon tube pressure gauge,multi-turn spring tube manometer, bellows pressure meter. Remote pressure gauge: If the electrical contact pressure gauge and so on.
2．彈簧管式壓力表以彈性元件受壓后的變形量來反映壓力的大小。彈簧管式壓力表主要由彈簧彎管、齒輪傳動機構、示散裝置（指針和分度盤）以及外殼等組成。
Bourdon tube pressure gauge to the deformation of the elastic element to reflect the pressure after compression size. Bourdon tube pressure gauge is mainly composed of a spring bends, gear transmission mechanism, showing scattered device (pointer and sub-dial), and shell and other components.
