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Sorts and Application of Target Flowmeter

Yuan Zhonglin Liang Junying  
Target flowmeter is one of the commonly used instruments for measuring flow. For providing convenient communications between manufacturers and customers, and fast and orderly accelerating the development of target flowmeter, the measuring principle of target flowmeter is introduced concretely.The basis of sorting and naming of the sorts are put forward. According to the different structure, target flowmeter can be divided into shaft seal diaphragm type, flexibility type, torque tube type and differential pressure type. According to different force conversion, the flowmeter can be divided into force to pneumatic pressure conversion type, force to voltage conversion type and force to differential pressure conversion type. The structures of various types are described and the new theory of differential pressure target is proposed. The inadequacy of the traditional dry calibration method is analyzed and a new dry calibration device is designed. The author appeals to work out national standard of target flowmeter in China as early as possible.
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