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專業(yè)供應西門子超聲波物位計7ML11320AA40
測量范圍：0.25～5m（液體）、0.25～3m（固體） 典型型號有：
7ML1510-1CE01
溫度范圍：－40～60℃ 7ML1510-1CE02
7ML1510-1CE11
2個單獨設定的報警／控制 7ML1510-1CE12
7ML1510-3CE01
供電：18～30VDC 或 100～230VAC 7ML1510-3CE02
7ML1510-3CE11
SPDT繼電器觸點容量 220VAC 5A（無感） 7ML1510-3CE12
7ML1510-1HE01
輸出：2組繼電器觸點或晶體管開關輸出 7ML1510-1HE02
7ML1510-1JE02
西門子一體化超聲波液位計 ：劉向陽
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SIMENS西門子超聲波物位計7ML11320AA40Echomax 西門子超聲波物位測量是基于回聲測距原理。由于在發(fā)出聲音和聽到聲音之間有一個可測量的時間差，因此聲音可用作一種測量工具。然后將該時間差可轉換成有用信息。超聲波傳感器可產(chǎn)生20,000 Hz 以上的超聲波，然后計算回波的時間差。傳感器可發(fā)出超聲波，感測回波，然后收發(fā)器計算時間差，并轉換成為有用信息。西門子超聲波裝置內(nèi)置了的聲智能回波信號處理技術及*的算法。聲智能技術能夠區(qū)分自現(xiàn)場的真實的回波和來自障礙物或電子噪聲中的假回波。
專業(yè)供應西門子超聲波物位計7ML11320AA40
典型系統(tǒng)
西門子超聲波物位計7ML11320AA40超聲波物位測量需要兩個部件：一個用于發(fā)出聲音，采集回波（傳感器），另一個用于計算數(shù)據(jù)，導出測量結果（變送器）。即使某些超聲波儀表將某些部件進行了集成，但有些功能仍不同。超聲波測量系統(tǒng)將信號輸出到PLC 或PC 進行過程控制。
操作原理
傳感器中的壓電晶體可將電氣信號轉換成為聲能，以脈沖形式在空氣中傳播，然后經(jīng)由目標物反射回到傳感器。此時傳感器作為接收裝置，將聲能轉換成為一種電信號。電信號處理器可以分析回波，計算傳感器和目標之間的距離。從發(fā)出聲音到收到回波之間的時間與傳感器和容器中物料之間的距離成正比。基于時差原理的超聲波測量技術，公式如下：距離=（聲速 x 時間）/2。
內(nèi)置溫度補償
低余振的技術保證了 盲區(qū)的zui小
聲阻匹配技術用于帶輕微粉塵的固體應用
自清潔和低維護成本
2 線制連接
抗化學腐蝕
一體化設計保證了氣密性
應用
傳感器都可以裝入過程容器，可以用于有蒸汽和苛刻的化學腐蝕的場合，并且可以不用法蘭安裝。XPS 系列的監(jiān)測距離zui大為 40m，使用溫度zui高達 95 °C。在高溫測量場合，XCT 系列超聲波傳感器的可以監(jiān)測zui大為12m，使用溫度高達 145 °C。運行時，Echomax 超聲波傳感器以一個窄的波束垂直于其表面發(fā)射聲音脈沖。液位變送器通過發(fā)射和回波之間的時間差來計算距離。
