The precision of liquid column manometer was described. The correct use method and errorcorrection of U tube manometer and double tube differential pressure gauge 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。
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The TRL calibration was completed using 10 errorcorrection models in the vector network analyzer. The accurate measurement of double ridge waveguide device was realized.
The presentation of usage of liquid column manometer. The correct use method and errorcorrection of U tube manometer and double tube differential pressure gauge were analysed.