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- 產(chǎn)品名稱：專業(yè)供應(yīng)西門子超聲波物位計(jì)7ML11320AA40
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專業(yè)供應(yīng)西門子超聲波物位計(jì)7ML11320AA40
測量范圍：0.25～5m（液體）、0.25～3m（固體） 典型型號(hào)有：
7ML1510-1CE01
溫度范圍：－40～60℃ 7ML1510-1CE02
7ML1510-1CE11
2個(gè)單獨(dú)設(shè)定的報(bào)警／控制 7ML1510-1CE12
7ML1510-3CE01
供電：18～30VDC 或 100～230VAC 7ML1510-3CE02
7ML1510-3CE11
SPDT繼電器觸點(diǎn)容量 220VAC 5A（無感） 7ML1510-3CE12
7ML1510-1HE01
輸出：2組繼電器觸點(diǎn)或晶體管開關(guān)輸出 7ML1510-1HE02
7ML1510-1JE02
西門子一體化超聲波液位計(jì) ：劉向陽
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SIMENS西門子超聲波物位計(jì)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(gè)可測量的時(shí)間差，因此聲音可用作一種測量工具。然后將該時(shí)間差可轉(zhuǎn)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(jì)算回波的時(shí)間差。傳感器可發(fā)出超聲波，感測回波，然后收發(fā)器計(jì)算時(shí)間差，并轉(zhuǎn)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(hào)處理技術(shù)及*的算法。聲智能技術(shù)能夠區(qū)分自現(xiàn)場的真實(shí)的回波和來自障礙物或電子噪聲中的假回波。
專業(yè)供應(yīng)西門子超聲波物位計(jì)7ML11320AA40
典型系統(tǒng)
西門子超聲波物位計(jì)7ML11320AA40超聲波物位測量需要兩個(gè)部件：一個(gè)用于發(fā)出聲音，采集回波（傳感器），另一個(gè)用于計(jì)算數(shù)據(jù)，導(dǎo)出測量結(jié)果（變送器）。即使某些超聲波儀表將某些部件進(jìn)行了集成，但有些功能仍不同。超聲波測量系統(tǒng)將信號(hào)輸出到PLC 或PC 進(jìn)行過程控制。
操作原理
傳感器中的壓電晶體可將電氣信號(hào)轉(zhuǎn)換成為聲能，以脈沖形式在空氣中傳播，然后經(jīng)由目標(biāo)物反射回到傳感器。此時(shí)傳感器作為接收裝置，將聲能轉(zhuǎn)換成為一種電信號(hào)。電信號(hào)處理器可以分析回波，計(jì)算傳感器和目標(biāo)之間的距離。從發(fā)出聲音到收到回波之間的時(shí)間與傳感器和容器中物料之間的距離成正比?；跁r(shí)差原理的超聲波測量技術(shù)，公式如下：距離=（聲速 x 時(shí)間）/2。
內(nèi)置溫度補(bǔ)償
低余振的技術(shù)保證了 盲區(qū)的zui小
聲阻匹配技術(shù)用于帶輕微粉塵的固體應(yīng)用
自清潔和低維護(hù)成本
2 線制連接
抗化學(xué)腐蝕
一體化設(shè)計(jì)保證了氣密性
應(yīng)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(xué)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(dá) 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(dá) 145 °C。運(yùn)行時(shí)，Echomax 超聲波傳感器以一個(gè)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(shí)間差來計(jì)算距離。
