QBT-3X-UT-81A本監測(ce)裝(zhuang)置(zhi)的(de)工作原理由(you)方框圖可(ke)(ke)(ke)以(yi)看出(chu)(chu)(chu)(chu)(chu)，它由(you)振(zhen)蕩電(dian)(dian)(dian)(dian)路(lu)、恒流源(yuan)、鑒別(bie)(bie)器(qi)等組成(cheng)。該位(wei)(wei)移(yi)傳(chuan)感(gan)器(qi)的(de)內部鐵(tie)芯繞(rao)有(you)兩組線圈，在傳(chuan)感(gan)器(qi)殼體內移(yi)動(dong)(dong)，當線圈通入(ru)一(yi)(yi)(yi)定(ding)(ding)頻率的(de)交流電(dian)(dian)(dian)(dian)壓后(hou)，產生一(yi)(yi)(yi)個(ge)與(yu)(yu)鐵(tie)芯位(wei)(wei)移(yi)相對應的(de)電(dian)(dian)(dian)(dian)信(xin)號。振(zhen)蕩器(qi)產生1～3KHz的(de)振(zhen)蕩電(dian)(dian)(dian)(dian)壓進入(ru)信(xin)號處(chu)理環(huan)節，當傳(chuan)感(gan)器(qi)接通后(hou)，1～3KHz交流電(dian)(dian)(dian)(dian)進入(ru)傳(chuan)感(gan)器(qi)，隨(sui)傳(chuan)感(gan)器(qi)鐵(tie)芯的(de)位(wei)(wei)移(yi)變(bian)化，經(jing)信(xin)號處(chu)理環(huan)節變(bian)換(huan)，得到與(yu)(yu)鐵(tie)芯位(wei)(wei)置(zhi)成(cheng)比(bi)例的(de)0～5V電(dian)(dian)(dian)(dian)壓，此電(dian)(dian)(dian)(dian)壓一(yi)(yi)(yi)路(lu)經(jing)緩沖器(qi)輸(shu)(shu)(shu)(shu)出(chu)(chu)(chu)(chu)(chu)0～5V電(dian)(dian)(dian)(dian)壓信(xin)號，另一(yi)(yi)(yi)路(lu)經(jing)V/I轉換(huan)得到4～20mA的(de)電(dian)(dian)(dian)(dian)流輸(shu)(shu)(shu)(shu)出(chu)(chu)(chu)(chu)(chu)，還有(you)一(yi)(yi)(yi)路(lu)送到報(bao)(bao)警(jing)(jing)(jing)電(dian)(dian)(dian)(dian)路(lu)進行(xing)鑒別(bie)(bie)，超*可(ke)(ke)(ke)發出(chu)(chu)(chu)(chu)(chu)報(bao)(bao)警(jing)(jing)(jing)信(xin)號。 測(ce)量(liang)顯(xian)示油(you)箱油(you)位(wei)(wei)，4位(wei)(wei)數(shu)碼管顯(xian)示，*位(wei)(wei)為符(fu)號位(wei)(wei)。設(she)(she)(she)有(you)兩級報(bao)(bao)警(jing)(jing)(jing)，可(ke)(ke)(ke)根據需要(yao)(yao)設(she)(she)(she)定(ding)(ding)報(bao)(bao)警(jing)(jing)(jing)值(zhi)(zhi)(zhi),當油(you)箱油(you)位(wei)(wei)行(xing)程(cheng)(cheng)超過報(bao)(bao)警(jing)(jing)(jing)設(she)(she)(she)定(ding)(ding)值(zhi)(zhi)(zhi)時(shi)(shi)(shi)，前面(mian)板相應報(bao)(bao)警(jing)(jing)(jing)指示燈亮，同時(shi)(shi)(shi)監控儀(yi)在后(hou)面(mian)板輸(shu)(shu)(shu)(shu)出(chu)(chu)(chu)(chu)(chu)開(kai)關(guan)信(xin)號，保護(hu)被控設(she)(she)(she)備。設(she)(she)(she)有(you)電(dian)(dian)(dian)(dian)流輸(shu)(shu)(shu)(shu)出(chu)(chu)(chu)(chu)(chu)，可(ke)(ke)(ke)與(yu)(yu)計算機等設(she)(she)(she)備連(lian)接。二級報(bao)(bao)警(jing)(jing)(jing)開(kai)關(guan)量(liang)輸(shu)(shu)(shu)(shu)出(chu)(chu)(chu)(chu)(chu)，具有(you)4～20mA電(dian)(dian)(dian)(dian)流模擬量(liang)輸(shu)(shu)(shu)(shu)出(chu)(chu)(chu)(chu)(chu)，量(liang)程(cheng)(cheng)、報(bao)(bao)警(jing)(jing)(jing)、危(wei)險(xian)值(zhi)(zhi)(zhi)任(ren)意設(she)(she)(she)置(zhi)，參數(shu)設(she)(she)(she)置(zhi)密碼保護(hu)。測(ce)量(liang)范圍(wei)：0～200mm(量(liang)程(cheng)(cheng)可(ke)(ke)(ke)由(you)用(yong)戶自定(ding)(ding))，0～±200mm(量(liang)程(cheng)(cheng)可(ke)(ke)(ke)由(you)用(yong)戶自定(ding)(ding))量(liang)程(cheng)(cheng)：-200～200mm，線性誤差：1.5％±1個(ge)字(zi)，電(dian)(dian)(dian)(dian)流輸(shu)(shu)(shu)(shu)出(chu)(chu)(chu)(chu)(chu)：4～20mA   負載(zai)≦500Ω，報(bao)(bao)警(jing)(jing)(jing)設(she)(she)(she)定(ding)(ding)：滿(man)量(liang)程(cheng)(cheng)內任(ren)意，報(bao)(bao)警(jing)(jing)(jing)接點(dian)容量(liang)：220VAC/2A，24VDC/3A，工作溫(wen)度：-30℃～60℃，濕度：≤85％，工作電(dian)(dian)(dian)(dian)源(yuan)：AC220V±30%  50Hz  功耗(hao)≤10W，主要(yao)(yao)功能：行(xing)程(cheng)(cheng)位(wei)(wei)移(yi)顯(xian)示,分(fen)別(bie)(bie)（正(zheng)、負）報(bao)(bao)警(jing)(jing)(jing)，（正(zheng)、負）危(wei)險(xian)繼電(dian)(dian)(dian)(dian)器(qi)接點(dian)輸(shu)(shu)(shu)(shu)出(chu)(chu)(chu)(chu)(chu)，量(liang)程(cheng)(cheng)下限(xian)～上(shang)限(xian):電(dian)(dian)(dian)(dian)流分(fen)別(bie)(bie)對應(4-20mA)輸(shu)(shu)(shu)(shu)出(chu)(chu)(chu)(chu)(chu)，上(shang)電(dian)(dian)(dian)(dian)復位(wei)(wei)延(yan)時(shi)(shi)(shi),正(zheng)常燈滅,恢復時(shi)(shi)(shi)延(yan)時(shi)(shi)(shi)5秒解除，報(bao)(bao)警(jing)(jing)(jing)危(wei)險(xian)值(zhi)(zhi)(zhi)可(ke)(ke)(ke)以(yi)任(ren)意設(she)(she)(she)定(ding)(ding)(量(liang)程(cheng)(cheng)范圍(wei)內)，報(bao)(bao)警(jing)(jing)(jing)危(wei)險(xian)繼電(dian)(dian)(dian)(dian)器(qi)輸(shu)(shu)(shu)(shu)出(chu)(chu)(chu)(chu)(chu)延(yan)時(shi)(shi)(shi)四檔定(ding)(ding)值(zhi)(zhi)(zhi)選擇，量(liang)程(cheng)(cheng)自由(you)設(she)(she)(she)置(zhi)，在數(shu)據設(she)(she)(she)置(zhi)值(zhi)(zhi)(zhi)查(cha)看中(zhong),1分(fen)鐘不進行(xing)擊鍵盤(pan)操作,自動(dong)(dong)回(hui)到測(ce)量(liang)狀態。