電(dian)子(zi)(zi)稱(cheng)(cheng)重(zhong)(zhong)設備安裝(zhuang)完畢后，需要確認傳(chuan)感(gan)器(qi)(qi)盤球是(shi)否松動。這時(shi)，應(ying)該加一些合適(shi)的(de)鐵(tie)板(ban)使(shi)其(qi)達標，如果是(shi)正常(chang)狀(zhuang)態(tai)則是(shi)有(you)(you)很明顯的(de)縱向和橫向擺(bai)動。電(dian)子(zi)(zi)汽(qi)車衡(heng)(heng)的(de)安裝(zhuang)要求與普通模擬(ni)汽(qi)車衡(heng)(heng)相同。基(ji)礎必(bi)須(xu)(xu)水平可(ke)靠，傳(chuan)感(gan)器(qi)(qi)與磅秤(cheng)必(bi)須(xu)(xu)有(you)(you)良(liang)好的(de)接觸，各傳(chuan)感(gan)器(qi)(qi)受(shou)(shou)力應(ying)相對均勻。固(gu)定(ding)式軸(zhou)重(zhong)(zhong)秤(cheng)，原理跟固(gu)定(ding)式電(dian)子(zi)(zi)汽(qi)車衡(heng)(heng)基(ji)本相同。但固(gu)定(ding)式軸(zhou)重(zhong)(zhong)秤(cheng)每次稱(cheng)(cheng)量(liang)的(de)是(shi)汽(qi)車各軸(zhou)重(zhong)(zhong)量(liang)，通過累加獲(huo)得整車重(zhong)(zhong)量(liang)。可(ke)以(yi)采用(yong)動態(tai)和靜態(tai)兩種稱(cheng)(cheng)量(liang)方式。優點：可(ke)以(yi)滿(man)足(zu)各類汽(qi)車軸(zhou)重(zhong)(zhong)的(de)需求，結構(gou)輕小，便于運輸(shu)、安裝(zhuang)調試。缺(que)點：動態(tai)受(shou)(shou)車速、車型、路(lu)面狀(zhuang)況(kuang)等情況(kuang)的(de)影響(xiang)，精度(du)較低；靜態(tai)稱(cheng)(cheng)量(liang)過程繁瑣，時(shi)間太長。電(dian)子(zi)(zi)汽(qi)車衡(heng)(heng)利用(yong)應(ying)變(bian)電(dian)測(ce)原理稱(cheng)(cheng)重(zhong)(zhong)。電(dian)子(zi)(zi)汽(qi)車衡(heng)(heng)在(zai)稱(cheng)(cheng)重(zhong)(zhong)傳(chuan)感(gan)器(qi)(qi)的(de)彈性(xing)體上粘(zhan)貼有(you)(you)應(ying)變(bian)計，組(zu)成(cheng)惠(hui)斯(si)登電(dian)橋。在(zai)無負(fu)荷(he)時(shi)，電(dian)橋處(chu)于平衡(heng)(heng)狀(zhuang)態(tai)，輸(shu)出為零。當(dang)彈性(xing)體承受(shou)(shou)載(zai)荷(he)時(shi)，各應(ying)變(bian)計隨(sui)之產生與載(zai)荷(he)成(cheng)比例的(de)應(ying)變(bian)，由輸(shu)出電(dian)壓即可(ke)測(ce)出外加載(zai)。
電子(zi)汽(qi)車(che)(che)(che)衡(heng)俗(su)稱(cheng)地(di)(di)磅(bang)，是于大宗貨物計量的(de)(de)(de)(de)主要(yao)稱(cheng)重設備。在二十世紀80年代(dai)之(zhi)前常(chang)(chang)見的(de)(de)(de)(de)汽(qi)車(che)(che)(che)衡(heng)一(yi)般(ban)是利(li)用杠桿原理(li)(li)純機(ji)械(xie)構造(zao)的(de)(de)(de)(de)機(ji)械(xie)式(shi)(shi)汽(qi)車(che)(che)(che)衡(heng)，也稱(cheng)作(zuo)機(ji)械(xie)地(di)(di)磅(bang)。二十世紀80年代(dai)中期，隨著高(gao)精(jing)度(du)稱(cheng)重傳(chuan)(chuan)感(gan)(gan)器(qi)技術(shu)的(de)(de)(de)(de)日趨成(cheng)熟，機(ji)械(xie)式(shi)(shi)地(di)(di)磅(bang)逐漸被精(jing)度(du)高(gao)、穩定性好、操作(zuo)方便的(de)(de)(de)(de)電子(zi)汽(qi)車(che)(che)(che)衡(heng)所取代(dai)。傳(chuan)(chuan)感(gan)(gan)器(qi)形成(cheng)的(de)(de)(de)(de)外(wai)(wai)部(bu)環(huan)(huan)境(jing)的(de)(de)(de)(de)影響主要(yao)是以(yi)下幾方面，在高(gao)腐蝕性環(huan)(huan)境(jing)中，如(ru)水分(fen)(fen)、酸形成(cheng)的(de)(de)(de)(de)傳(chuan)(chuan)感(gan)(gan)器(qi)彈(dan)性體(ti)，損壞或短路，如(ru)果電子(zi)汽(qi)車(che)(che)(che)衡(heng)，環(huan)(huan)境(jing)差(cha)，應選擇(ze)外(wai)(wai)殼塑料或不銹鋼外(wai)(wai)殼接(jie)線盒，良(liang)好的(de)(de)(de)(de)耐腐蝕性和(he)抗滲(shen)性稱(cheng)重傳(chuan)(chuan)感(gan)(gan)器(qi)。動(dong)態汽(qi)車(che)(che)(che)衡(heng)主要(yao)由載(zai)(zai)體(ti)、數據處理(li)(li)部(bu)分(fen)(fen)和(he)顯(xian)示儀表組成(cheng)。數據處理(li)(li)部(bu)分(fen)(fen)通常(chang)(chang)設計為(wei)控(kong)制(zhi)柜。根據載(zai)(zai)重載(zai)(zai)體(ti)的(de)(de)(de)(de)不同，動(dong)態汽(qi)車(che)(che)(che)衡(heng)可分(fen)(fen)為(wei)車(che)(che)(che)式(shi)(shi)、軸(zhou)重式(shi)(shi)、雙秤臺(tai)式(shi)(shi)、軸(zhou)組式(shi)(shi)、多(duo)排式(shi)(shi)和(he)組合式(shi)(shi)。在承(cheng)重者承(cheng)受輪胎載(zai)(zai)荷時，動(dong)態汽(qi)車(che)(che)(che)衡(heng)對電信號(hao)進行測試(shi)，通過(guo)放大和(he)信號(hao)處理(li)(li)將電信號(hao)轉(zhuan)化為(wei)車(che)(che)(che)輛質量。然后(hou)，根據載(zai)(zai)具(ju)的(de)(de)(de)(de)工(gong)作(zuo)原理(li)(li)，大致分(fen)(fen)為(wei)兩(liang)種類型(xing):應變型(xing)和(he)石英晶體(ti)型(xing)。
與(yu)傳(chuan)(chuan)統(tong)的(de)機(ji)械式(shi)(shi)稱(cheng)重(zhong)(zhong)(zhong)(zhong)(zhong)儀表(biao)和(he)其他地面稱(cheng)重(zhong)(zhong)(zhong)(zhong)(zhong)儀表(biao)相比(bi)(bi)，具有稱(cheng)重(zhong)(zhong)(zhong)(zhong)(zhong)速度(du)(du)(du)快、精(jing)度(du)(du)(du)高(gao)、靈敏度(du)(du)(du)高(gao)、數顯、直觀易讀、穩定性(xing)強、可(ke)靠性(xing)高(gao)、使用(yong)壽(shou)命長等優(you)(you)點。特別是(shi)(shi)在(zai)危險、惡劣的(de)環境(jing)中(zhong)，更能體(ti)(ti)(ti)現電(dian)子(zi)衡器的(de)作(zuo)用(yong)。整個自(zi)動稱(cheng)重(zhong)(zhong)(zhong)(zhong)(zhong)系(xi)(xi)統(tong)具有的(de)高(gao)精(jing)度(du)(du)(du)傳(chuan)(chuan)感器和(he)智能儀表(biao)顯示。該儀器具有靈敏度(du)(du)(du)高(gao)、分辨率高(gao)、穩定性(xing)和(he)可(ke)靠性(xing)好、易于(yu)打印(yin)等優(you)(you)點。如果(guo)稱(cheng)重(zhong)(zhong)(zhong)(zhong)(zhong)管理(li)系(xi)(xi)統(tong)由計算機(ji)和(he)稱(cheng)重(zhong)(zhong)(zhong)(zhong)(zhong)軟件組成(cheng)，還可(ke)以實現稱(cheng)重(zhong)(zhong)(zhong)(zhong)(zhong)的(de)遠程傳(chuan)(chuan)輸(shu)和(he)集(ji)中(zhong)自(zi)動管理(li)。固(gu)(gu)定式(shi)(shi)軸(zhou)重(zhong)(zhong)(zhong)(zhong)(zhong)秤(cheng)(cheng)，原(yuan)理(li)跟(gen)固(gu)(gu)定式(shi)(shi)電(dian)子(zi)汽車(che)(che)(che)衡基本相同。但固(gu)(gu)定式(shi)(shi)軸(zhou)重(zhong)(zhong)(zhong)(zhong)(zhong)秤(cheng)(cheng)每次稱(cheng)量(liang)(liang)的(de)是(shi)(shi)汽車(che)(che)(che)各(ge)軸(zhou)重(zhong)(zhong)(zhong)(zhong)(zhong)量(liang)(liang)，通過累加(jia)獲得整車(che)(che)(che)重(zhong)(zhong)(zhong)(zhong)(zhong)量(liang)(liang)。可(ke)以采用(yong)動態(tai)和(he)靜態(tai)兩種稱(cheng)量(liang)(liang)方式(shi)(shi)。優(you)(you)點：可(ke)以滿(man)足各(ge)類汽車(che)(che)(che)軸(zhou)重(zhong)(zhong)(zhong)(zhong)(zhong)的(de)需求，結構輕小，便于(yu)運輸(shu)、安(an)裝調試。缺點：動態(tai)受車(che)(che)(che)速、車(che)(che)(che)型、路(lu)面狀況(kuang)等情況(kuang)的(de)影響，精(jing)度(du)(du)(du)較低(di)；靜態(tai)稱(cheng)量(liang)(liang)過程繁瑣(suo)，時間太長。電(dian)子(zi)汽車(che)(che)(che)衡的(de)工(gong)作(zuo)原(yuan)理(li)：被稱(cheng)重(zhong)(zhong)(zhong)(zhong)(zhong)物或載重(zhong)(zhong)(zhong)(zhong)(zhong)汽車(che)(che)(che)置于(yu)承(cheng)(cheng)載器臺面上，在(zai)重(zhong)(zhong)(zhong)(zhong)(zhong)力作(zuo)用(yong)下，通過承(cheng)(cheng)載器將重(zhong)(zhong)(zhong)(zhong)(zhong)力傳(chuan)(chuan)遞至稱(cheng)重(zhong)(zhong)(zhong)(zhong)(zhong)傳(chuan)(chuan)感器，使稱(cheng)重(zhong)(zhong)(zhong)(zhong)(zhong)傳(chuan)(chuan)感器彈性(xing)體(ti)(ti)(ti)產生變形，貼附于(yu)彈性(xing)體(ti)(ti)(ti)上的(de)應變計橋路(lu)失去(qu)平衡，輸(shu)出與(yu)重(zhong)(zhong)(zhong)(zhong)(zhong)量(liang)(liang)數值成(cheng)正比(bi)(bi)例的(de)電(dian)信號，經線性(xing)放大器將信號放大，再經A/D轉(zhuan)換為數字信號，由儀表(biao)的(de)微處理(li)機(ji)（CPU）對重(zhong)(zhong)(zhong)(zhong)(zhong)量(liang)(liang)信號進行處理(li)后直接顯示重(zhong)(zhong)(zhong)(zhong)(zhong)量(liang)(liang)數據(ju)。
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