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21000-16-10-20-035-03-02本特利位移探頭殼體組件

探頭即傳感器的再封裝形式，是把傳感器的基本單元，通過合理的電子電路與外部封裝結構，對傳感器進行封裝，使它具有我們所需的一些功能的部件，他和傳感器一樣，通常根據其基本感知功能分為熱敏探頭、光敏探頭、氣敏探頭、力敏探頭、磁敏探頭、濕敏探頭、聲敏探頭、放射線探頭、色敏探頭和味敏探頭、探頭等幾大類。
有諧振式傳感器、寬帶傳感器、水型傳感器、高溫傳感器、低溫傳感器等其他功能型的傳感器。探頭在電渦流傳感器系統中發揮重要的作用。未能做好探頭的安裝，以至于探頭距離金屬體過近或導電體面積過小，將導致渦流的形成受到影響。因此在實際檢修作業時，還應加強機組保護儀表探頭的安裝與維護，以機組的運行能夠得到監控。
探頭的前置器一般提供探頭需要的電源，對信號進行放大、檢波和濾波等。
電渦流位移傳感器的探頭線圈接受前置器振蕩電路來的高頻電流，在其周圍產生高頻磁場，該磁場穿過靠近它的轉軸金屬表面，在其中產生一個電渦流，該電渦流產生的磁場方向和線圈磁場方向相反，改變了原線圈的感抗，該感抗的變化隨探頭頂部金屬表面的間隙變化而變化。
前置器檢測電路檢測探頭線圈的感抗變化。再經放大電路將感抗變化量變換放大成相應電壓變化信號輸出。經監測儀進行轉換，根據測量的要求將其輸出電壓的直流部分用做位移量的檢測，交流部分用做振動值的檢測。

本特利Bently接近探頭外殼組件
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