A differentialpressuregauge is recommended for test no. 1 rather than a manometer for the following reasons: It utilizes minimum time to perform the test.
对于检测1，建议采用差压表，而不要采用流体压力表，理由在于差压表进行检测的时间最短。
2
The presentation of usage of liquid column manometer. The correct use method and error correction of U tube manometer and double tube differentialpressuregauge were analysed.
主要介绍了液柱压力计的正确使用方法和误差分析。给出了U 型管压力计和双管差压计的测量精度。
3
The precision of liquid column manometer was described. The correct use method and error correction of U tube manometer and double tube differentialpressuregauge were analysed.