設計了一種新型液體流量傳感器，并對其進行了制作和實驗標定。這種流量傳感器主要由特制的導流管和現有壓力傳感器組成，其基本原理是輸入口與輸出口這間的壓力差
與通過導液管的流速直接相關，用壓力傳感器測量導液管入口與出口之間的壓力差，并將其轉換成電壓量輸出。通過檢測導液管兩端的壓力差，即可計算出通過導游管的流速和流量。這種流量傳感器主要有結構簡單、靈敏度高、精確度高、量程范圍寬、成本低等優點。
關鍵詞：差壓流量計，差壓傳感器，液體流量檢測
Abstract: A novel liquid flow sensor is designed, fabricated and calibrated in this paper,
which mainly consists of a special conduits designed by us and a pressure sensor to be existing. The basic principle is to employ pressure sensor measuring pressure differences between inlet and outlet of the conduits in the flow. The pressure differences of the two ends of the flow sensor (inlet and outlet) in the flowing medium are directly interrelated with the flow rate via conduits, so the flow rate can be calculated by detecting pressure differences. This liquid flow sensor has many excellent performances such as simpler structure, higher sensitivity, stronger overload, higher precision, wider range, and lower cost etc.. It can be widely used in the fields of medicine, chemistry, petroleum, industry, agriculture and so on.
Keywords: Differential pressure flowmeter, Differential Pressure Sensor, Liquid flow
detection