72F50-SE0AA1AAA4AA德國進口（非導電液體）E+H渦街流量計
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E+H渦街流量計也稱之為旋渦流量計或卡門渦街流量計。綜合吸收發達國家*技術和總結多年研究生產經驗的基礎上進行精心設計的產品，實現了產品智能化、標準化、系列化、通用化、生產模具化、確保產品質量的美觀性。該產品具有電路*、功耗微低、量程比寬、結構簡單、阻力損失小、堅固耐用、用途廣、使用壽命長、工作穩定、便于安裝調試等特點。
參數及要求
◆測量介質： 氣體、液體、蒸氣
溫壓補償型渦街流量計——迪元儀表
◆連接方式：法蘭卡裝式、法蘭式、插入式
◆口徑規格 法蘭卡裝式口徑選擇 25,32,50,80,10
◆法蘭連接式口徑選擇 100,150,200
◆流量測量范圍 正常測量流速范圍 雷諾數1.5×104～4×106；氣體5～50m/s; 液體0.5～7m/s
正常測量流量范圍 液體、氣體流量測量范圍見表2； 蒸氣流量范圍見表3
◆測量精度 1.0級 1.5級
◆被測介質溫度:常溫–25℃～100℃，高溫–25℃～150℃ -25℃～250℃
◆輸出信號 脈沖電壓輸出信號 高電平8～10V 低電平0.7～1.3V
◆脈沖占空比約50%,傳輸距離為100m
◆脈沖電流遠傳信號 4～20 mA,傳輸距離為1000m
◆儀表使用環境 溫度:-25℃～+55℃ 濕度:5～90% RH50℃
分離式渦街流量計——迪元儀表
◆材質 不銹鋼, 鋁合金
◆電源 DC24V或鋰電池3.6V
◆防爆等級 本安型iaIIbT3-T6，防護等級 IP65
72F50-SE0AA1AAA4AA德國進口（非導電液體）E+H渦街流量計
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德國進口（非導電液體）E+H渦街流量計原理：在流體中設置三角柱型旋渦發生體，則從旋渦發生體兩側交替地產生有規則的旋渦，這種旋渦稱為卡門旋渦，旋渦列在旋渦發生體下游非對稱地排列。
渦街流量計是根據卡門渦街原理（Kármán Vortex Street）測量氣體、蒸汽或液體的體積流量、標況的體積流量或質量流量的體積流量計。并可作為流量變送器應用于自動化控制系統中。
渦街流量計是應用流體振蕩原理來測量流量的，流體在管道中經過渦街流量變送器時，在三角柱的旋渦發生體后上下交替產生正比于流速的兩列旋渦，旋渦的釋放頻率與流過旋渦發生體的流體平均速度及旋渦發生體特征寬度有關，可用下式表示：
式中:為旋渦的釋放頻率，單位為Hz；v為流過旋渦發生體的流體平均速度，單位為m/s；d為旋渦發生體特征寬度，單位為m；Sr為斯特勞哈爾數（Strouhal number），無量綱，它的數值范圍為0.14－0.27。
St是雷諾數的函數。
當雷諾數Re在范圍內，St值約為0.2。在測量中，要盡量滿足流體的雷諾數在，此時旋渦頻率。
由此，通過測量旋渦頻率就可以計算出流過旋渦發生體的流體平均速度v，再由式可以求出流量q，其中A為流體流過旋渦發生體的截面積。
72F50-SE0AA1AAA4AA德國進口（非導電液體）E+H渦街流量計
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