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EPRO振動傳感器，PR9268／300-000
EPRO振動傳感器用于測量振動
工作溫度可達(dá) 200 °C
易于安裝
高靈敏度
堅固的外殼適合工業(yè)應(yīng)用
防水保護(hù)等級： IP 55 resp. IP 65
兩種頻率范圍: 10 Hz - 1000 Hz 4 Hz - 1000 Hz
連接安全柵 (zone 1)防爆等級 EEx ib II B / II C
是 MMS 6000 和 MMS 3000 旋轉(zhuǎn)機械監(jiān)測保護(hù)系統(tǒng)的一部分
振動傳感器在測試技術(shù)中是關(guān)鍵部件之一，它的作用主要是將機械量接收下來，并轉(zhuǎn)換為與之成比例的電量。由于它也是一種機電轉(zhuǎn)換裝置。所以我們有時也稱它為換能器、拾振器等。
德國EPRO振動傳感器并不是直接將原始要測的機械量轉(zhuǎn)變?yōu)殡娏?，而是將原始要測的機械量做為振動傳感器的輸入量，然后由機械接收部分加以接收，形成另一個適合于變換的機械量，zui后由機電變換部分再將變換為電量。因此一個傳感器的工作性能是由機械接收部分和機電變換部分的工作性能來決定的。
1、相對式機械接收原理
由于機械運動是物質(zhì)運動的zui簡單的形式，因此人們zui先想到的是用機械方法測量振動，從而制造出了機械式測振儀(如蓋格爾測振儀等)。傳感器的機械接收原理就是建立在此基礎(chǔ)上的。相對式測振儀的工作接收原理是在測量時，把儀器固定在不動的支架上，使觸桿與被測物體的振動方向一致，并借彈簧的彈性力與被測物體表面相接觸，當(dāng)物體振動時，觸桿就跟隨它一起運動，并推動記錄筆桿在移動的紙帶上描繪出振動物體的位移隨時間的變化曲線，根據(jù)這個記錄曲線可以計算出位移的大小及頻率等參數(shù)。
由此可知，相對式機械接收部分所測得的結(jié)果是被測物體相對于參考體的相對振動，只有當(dāng)參考體不動時，才能測得被測物體的振動。這樣，就發(fā)生一個問題，當(dāng)需要測的是振動，但又找不到不動的參考點時，這類儀器就無用武之地。例如:在行駛的內(nèi)燃機車上測試內(nèi)燃機車的振動，在地震時測量地面及樓房的振動……，都不存在一個不動的參考點。在這種情況下，我們必須用另一種測量方式的測振儀進(jìn)行測量，即利用慣性式測振儀。
EPRO振動傳感器，PR9268／300-000
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EPRO振動傳感器，PR9268／300-000