The precision of liquid column manometer was described. The correct use method and error correction of U tube manometer and double tube differential pressuregauge were analysed.
叙述了液柱式压力计的精度，对U形管压力计和双管差压计的正确使用方法及误差修正做了简要分析。
2
The Bourdon - type pressuregauge is more convenient for most purposes than a liquid manometer.
在很多情况下，使用鲍敦式压力计要比液体压力计更为方便。
3
Normal PressureGauge is applicable for measuring the pressure of liquid, steam and gas without possibility like explsion, crystal, solidification and erosion on steel or alloy cooper.