用于信號傳輸線的玻璃管液位計要求

為(wei)(wei)了(le)確(que)保(bao)足(zu)夠的(de)(de)(de)(de)靈(ling)敏度指示(shi)符從傳感(gan)(gan)器玻璃管(guan)液位計輸(shu)(shu)出的(de)(de)(de)(de)脈(mo)沖信(xin)(xin)號(hao)。各種電(dian)(dian)氣設備應(ying)防止干(gan)擾，有必(bi)要(yao)改善信(xin)(xin)噪比.為(wei)(wei)此。一(yi)世.?.電(dian)(dian)磁(ci)感(gan)(gan)應(ying)，靜電(dian)(dian)和(he)電(dian)(dian)容耦(ou)合.因此，配置信(xin)(xin)號(hao)傳輸(shu)(shu)線(xian)(xian)時，一(yi)定要(yao)注(zhu)意以下(xia)幾點(dian)：限制信(xin)(xin)號(hao)線(xian)(xian)的(de)(de)(de)(de)最大(da)長度.信(xin)(xin)號(hao)線(xian)(xian)的(de)(de)(de)(de)最大(da)長度是(shi)。在最小流(liu)速的(de)(de)(de)(de)感(gan)(gan)測線(xian)(xian)圈的(de)(de)(de)(de)RMS輸(shu)(shu)出電(dian)(dian)壓V，L=的(de)(de)(de)(de)dV其中。MVD系數，MMV希望的(de)(de)(de)(de)值：當V<；時間1000MV，d=1.01000mV<；d<；當5000mV，d=1.5V5000mV，d=2.0.信(xin)(xin)號(hao)傳輸(shu)(shu)線(xian)(xian)應(ying)該(gai)被屏蔽電(dian)(dian)纜。幾乎分開電(dian)(dian)源線(xian)(xian)排列成行.為(wei)(wei)了(le)防止感(gan)(gan)應(ying)噪聲(sheng)來自外部.顯示(shi)儀器的(de)(de)(de)(de)需要(yao)的(de)(de)(de)(de)傳輸(shu)(shu)電(dian)(dian)纜的(de)(de)(de)(de)屏蔽層接地(di)側.不靠近強電(dian)(dian)磁(ci)傳輸(shu)(shu)電(dian)(dian)纜設備。