搜索關鍵詞:熱電(dian)偶,熱電(dian)阻(zu),雙(shuang)金屬溫(wen)度計(ji),壓力表(biao),壓力變送器,磁翻板液(ye)位計(ji)
簡短敘(xu)說(shuo):Q72-WMCZ 單相功率表嵌入安裝在船舶或其他(ta)移動電力設備裝置上, 測量單相交流電路中(zhong)的有功功率。
Q72-WMCZ 單相功率表結構原理
儀盤表用磁電系測量方法貸款機構,并有將工作功率轉變成成相電壓信 號的變幻器。儀表的變(bian)(bian)換部分是將待測功率(lv)變(bian)(bian)為DC 0~3號,變(bian)(bian) 換器采(cai)用(yong)內附(fu)或外附(fu).其原理框圖如下:
被測電(dian)(dian)(dian)(dian)流(liu)經互感器(qi),電(dian)(dian)(dian)(dian)流(liu)-電(dian)(dian)(dian)(dian)壓轉換器(qi),電(dian)(dian)(dian)(dian)壓經取(qu)樣電(dian)(dian)(dian)(dian) 路(lu)后,送入乘法器(qi),乘積(ji)經濾波.再電(dian)(dian)(dian)(dian)壓放(fang)大,轉換成DC 0?3號.驅動測量機構。穩壓電(dian)(dian)(dian)(dian)路(lu)電(dian)(dian)(dian)(dian)源取(qu)自待測電(dian)(dian)(dian)(dian)壓。
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