3500/25?改進(jìn)的鍵相器是一個(gè)半高度，2?通道，用來(lái)為3500?框架中的監(jiān)視器提供鍵相位信號(hào)。此接收來(lái)自電渦流傳感器或電磁式傳感器的輸入信號(hào)，并轉(zhuǎn)換此信號(hào)為數(shù)字鍵相位信號(hào)，該數(shù)字信號(hào)可指示何時(shí)轉(zhuǎn)軸上的鍵相位標(biāo)記通過(guò)鍵相位探頭。每個(gè)鍵相有2個(gè)輸入通道，3500?機(jī)械保護(hù)系統(tǒng)可安裝2個(gè)鍵相器，接收4個(gè)鍵相位信號(hào)。
注:??鍵相位信號(hào)是來(lái)自旋轉(zhuǎn)軸或齒輪的每轉(zhuǎn)一次或每轉(zhuǎn)多次的脈沖信號(hào)，提供精確的時(shí)間測(cè)量。允許3500?監(jiān)測(cè)器和外部故障診斷設(shè)備用來(lái)測(cè)量諸如1X?幅值和相位等向量參數(shù)。
每個(gè)鍵相器可接收2?個(gè)來(lái)自渦流傳感器或電磁傳感器的信號(hào)。輸入信號(hào)范圍為-0.8V到-21.0V(非絕緣I/O?)和+5V到-11V(絕緣I/O?)。內(nèi)可限幅，使信號(hào)不得超過(guò)此范圍。無(wú)源電磁傳感器要求軸轉(zhuǎn)速大于200rpm(3.3Hz)。在框架前面板上，通過(guò)同軸接頭，有2?個(gè)緩沖鍵相位輸出信號(hào)。2?個(gè)緩沖鍵相位輸出同樣可在框架背面，通過(guò)歐式接頭得到。
3500/45?差脹/軸向位置監(jiān)測(cè)器是一個(gè)可接收趨近式渦流傳感器、旋轉(zhuǎn)位置傳感器
(RPT)、DC?線性可變微分變換器(DCLVDT)、AC?線性可變微分變換器(AC?LVDT)和旋轉(zhuǎn)電位計(jì)輸入信號(hào)的4?通道監(jiān)測(cè)器。測(cè)量類型和相關(guān)的傳感器輸入將決定需要哪種輸入/輸出(I/O)。?它對(duì)輸入信號(hào)進(jìn)行處理，并將處理后的信號(hào)和用戶可編程的報(bào)設(shè)置進(jìn)行比較。應(yīng)用3500?框架組態(tài)軟件，3500/45?可被編程去完成如下功能：???•??軸向（側(cè)向）位置??•??差脹
•??標(biāo)準(zhǔn)單斜面差脹??•??非標(biāo)準(zhǔn)單斜面差脹??•??雙斜面差脹??•??補(bǔ)償式差脹??•??殼脹??•??閥門(mén)位置
注:??監(jiān)測(cè)器通道成對(duì)編程，每次多能完成上述的兩個(gè)功能。通道1?和2?能完成一個(gè)功能，而通道3?和4?能實(shí)現(xiàn)另外一個(gè)(或同一個(gè))功能。但是，只有通道3?和4?能實(shí)現(xiàn)殼脹監(jiān)測(cè)。???3500/45?監(jiān)測(cè)器的主要功能是：
1)??通過(guò)將所監(jiān)測(cè)參數(shù)與設(shè)定的報(bào)點(diǎn)進(jìn)行連續(xù)比較并驅(qū)動(dòng)報(bào)，以提供機(jī)械保護(hù)功能??2)??為運(yùn)行人員和維護(hù)人員提供基本的機(jī)器信息。
根據(jù)組態(tài)，每一通道可將輸入信號(hào)處理為稱作“比例值"的多種參數(shù)。每一個(gè)有效比例值可組態(tài)為報(bào)設(shè)置點(diǎn)，而任意兩個(gè)有效比例值可組態(tài)為危險(xiǎn)設(shè)置點(diǎn)。
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