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粒度儀

電磁流量計流量信號中尖峰干擾的抑制操作方法

發(fā)布日期:2022-05-30 點擊率:32

  電磁流量計對于紙漿、泥漿等漿液類流量的測量,流體中的固體顆粒摩擦或沖擊測量電極,會形成尖峰干擾信號,造成儀表流量顯示不穩(wěn)定。為抑制此類干擾,SYMag511電磁流量計轉(zhuǎn)換器增加了新功能:尖峰干擾抑制算法,對流量信號中的尖峰干擾進(jìn)行濾除。

  針對該功能,Mag511設(shè)計有三個參數(shù),以便用戶對抑制特性選擇使用。

  1、電磁流量計尖峰抑制數(shù)值

  該系數(shù)選定尖峰干擾的變化幅值。按流速的變化量計算,分為0.010m/s、0.020m/s、0.030m/s、0.050m/s、0.080m/s、0.100m/s、0.200m/s、0.300m/s、0.500m/s、0.800m/s、十個等級,Mag511抑制大于所選幅值的尖峰干擾。注意,該幅值并不是選得越小越好,而是應(yīng)根據(jù)實際情況試驗選擇。用戶可先關(guān)閉該功能,觀察儀表流速的不穩(wěn)定幅度,然后根據(jù)這個幅度選擇尖峰抑制數(shù)值參數(shù)。

  2、電磁流量計尖峰抑制延時

  該系數(shù)選定尖峰干擾的時間寬度,以毫秒為單位。若尖峰信號寬度小于選定延時,Mag511轉(zhuǎn)換器認(rèn)為是尖峰干擾。若尖峰信號寬度大于選定延時,Mag511轉(zhuǎn)換器認(rèn)為是正常的流量變化。用戶也應(yīng)根據(jù)實際情況,試驗著選擇該參數(shù)。

  3、電磁流量計尖峰抑制允許

  參數(shù)選“允許”,啟動尖峰抑制算法;選“禁止”,關(guān)閉尖峰抑制算法。

標(biāo)簽:                                    電磁流量計

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