This paper discusses the additional error of pressure-difference transducer when filling water. A new method is suggested to decrease such error.
本文对差压变送器“注水”使用时，因注水而产生的附加误差作了分析，提出了减少此附加误差的方法。
Capacitive pressure difference sensor is fixed in the center of the tube and connected with the pulse width modulation circuit so that capacitive flow transducer is made up.
把电容式差压传感器固定在管道中央，并配接脉冲调宽电路，即构成电容式流速变送器。
Capacitive pressure difference sensor is fixed in the center of the tube and connected with the pulse width modulation circuit so that capacitive flow transducer is made up.
把电容式差压传感器固定在管道中央，并配接脉冲调宽电路，即构成电容式流速变送器。
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