72F50-SE0AA1AAA4AA進口（非導電液體）E+H渦街流量計

 72F50-SE0AA1AAA4AA進口（非導電液體）E+H渦街流量計

72F1H-SE3AD1AAA4AA  72F2H-SE3AD1AAA4AA  91WA1-BA2B10AKA4AA  91WA1-BA2B10AKA4AA

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83F-40AD2SAAACAHAA  65F15-AE2AG1AAABAA   72F2H-SK0AA1CAA4AA  83I80-AD2WFBA1AGAJ

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91WA1-BB1B10ACA5AA  72F1H-SE0AA1AAA4AW  72F40-SE3AD1AAA4AA  72F1F-SE3AD1AAA4AA

72F1H-SE3AD1AAA4AA  72F2H-SE3AD1AAA4AA  80F80-AD2SAAAAADAD  50W2F-UD0A1AA0AAAA

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72F2H-SA0AA1AAA4AW  80F80-AD2SAA4AAAAA  80F50-AD2SAA4AAAAA  53W4H-UD0B1AA0AHAA

53W2H-UD0B1AA0AHAA  53P1Z-AC0B1AA0AHAA  53P50-AA0B1AA0AHAA  72F40-SE0AA1AAA3AA

10H50-UF0A1AA0A4AA  50H1H-1F0A1AA0AAAA  50H1H-UF0A1AA0AAAA  10P25-EA0A1AA0A4AA

10P40-EA0A1AA0A4AA   10P65-EC0A1AA0A4AA  50P15-EA0A1AA0AAAW  83A02-ASVWAAAAAAAA

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進口（非導電液體）E+H渦街流量計

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50P80-EA1A1AA0BAAA  80M50-AS2AABAAAAA8  50W1H-HC0A1AA0AAAW  50P15-EA0A1AA0AAAW

10P32-EA0A1AA0A4AA  50W50-UA0A1AA0AAAW  91WA1-AA2A10ACA4AA  53P2H-EC0B1AA0AAAA

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72F1F-SE0AA1AAA4AA  72F2H-SE0AA1AAA4AA  10W40-UA0A1AA0A4AA  10W1Z-UC0A1AA0A4AA

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進口（非導電液體）E+H渦街流量計