流量測量儀表是用來測量管道或明溝中的液體、氣體或蒸汽等流體流量的工業自動化儀表，又稱流量計。 流量是指單位時間內流經管道有效截面的流體數量，流體數量用體積表示者稱為體積流量，單位為米³/時、升/時等；流體數量用質量表示者稱為質量流量，單位為噸/時、千克/時等。 早在1738年，瑞士人丹尼爾第一·伯努利以伯努利方程為基礎，利用差壓法測量水流量；后來意大利人文丘里研
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