九原便攜式地磅*阿勒泰防爆秤

正確維護汽車電子(zi)地磅

  現在(zai)電(dian)子汽車衡(heng)(heng)越來(lai)越使(shi)用了(le)，但隨(sui)之也伴來(lai)這電(dian)子汽車衡(heng)(heng)容易發生故(gu)(gu)(gu)障(zhang)，電(dian)子汽車衡(heng)(heng)發生故(gu)(gu)(gu)障(zhang)不(bu)能工作時，我們應該(gai)首先根據電(dian)子汽車衡(heng)(heng)的結構，找到產生故(gu)(gu)(gu)障(zhang)的原因。我們判斷故(gu)(gu)(gu)障(zhang)是發生在(zai)稱重傳感(gan)器(qi)(qi)還是稱重顯示儀表，現在(zai)有zui簡便的方法是使(shi)用傳感(gan)器(qi)(qi)模擬(ni)器(qi)(qi)。

  稱(cheng)重(zhong)傳感(gan)(gan)器模(mo)擬(ni)(ni)器是根據電阻應變(bian)式稱(cheng)重(zhong)傳感(gan)(gan)器的(de)(de)工作原理制(zhi)成的(de)(de)，可以模(mo)擬(ni)(ni)電阻應變(bian)式稱(cheng)重(zhong)傳感(gan)(gan)器的(de)(de)各種不同(tong)加(jia)載狀態。這種模(mo)擬(ni)(ni)器類(lei)似一(yi)臺(tai)直(zhi)流(liu)標準電壓(ya)源，可以向(xiang)稱(cheng)重(zhong)顯示儀表提(ti)供各種秤(cheng)量范(fan)圍的(de)(de)模(mo)擬(ni)(ni)電壓(ya)信號。

  傳(chuan)感器(qi)模(mo)擬器(qi)的(de)激勵電壓來(lai)源(yuan)于稱重顯(xian)示儀表的(de)供(gong)橋電壓，是(shi)一(yi)種無源(yuan)的(de)被動型信(xin)號(hao)發生器(qi)。傳(chuan)感器(qi)模(mo)擬器(qi)既可以在實(shi)驗室(shi)內對稱重顯(xian)示儀表進行設(she)定和標(biao)定，也可以在現(xian)場及時查找、發現(xian)故(gu)障原因，從而迅速(su)排除故(gu)障，是(shi)一(yi)個*的(de)電子汽(qi)車衡檢測維(wei)修設(she)備。

 將接線盒(he)與稱重顯(xian)示(shi)儀(yi)表(biao)的信號電(dian)纜斷開，將傳感(gan)(gan)器(qi)模擬器(qi)的插座插人(ren)稱重顯(xian)示(shi)儀(yi)表(biao)接口，接通電(dian)源，看(kan)儀(yi)表(biao)工(gong)作是否正(zheng)常(chang)。如果儀(yi)表(biao)工(gong)作正(zheng)常(chang)，則(ze)(ze)說明故障發生在秤臺部分，由稱重傳感(gan)(gan)器(qi)或(huo)軍(jun)線盒(he)引起(qi)。如果儀(yi)表(biao)工(gong)作不正(zheng)常(chang)，則(ze)(ze)說明故障發生在稱重顯(xian)示(shi)儀(yi)表(biao)。

九原便攜式地磅*阿勒泰防爆秤

稱重系(xi)統正在全面取代(dai)模擬式稱重系(xi)統！

1、隨著(zhu)用戶對(dui)貨物的稱(cheng)重精度和長期使用穩定性的要求越(yue)來越(yue)高，而

，從重(zhong)(zhong)量感(gan)應(ying)元（傳(chuan)(chuan)感(gan)器）采集傳(chuan)(chuan)輸出(chu)來的信號(hao)為毫伏(fu)級模擬信號(hao)，要(yao)傳(chuan)(chuan)輸到(dao)數(shu)據(ju)處(chu)理(li)中心處(chu)理(li)成(cheng)稱(cheng)(cheng)重(zhong)(zhong)數(shu)據(ju)，一般要(yao)經過20～30米的導線傳(chuan)(chuan)輸距離，有的甚至更長，毫伏(fu)級的模擬信號(hao)，在傳(chuan)(chuan)輸過程當(dang)中，會受溫度、濕度、電磁場干擾(rao)等影響而發(fa)生變化(hua)，所以傳(chuan)(chuan)輸到(dao)儀(yi)表數(shu)據(ju)處(chu)理(li)中心時的信號(hao)會發(fa)生差異，導致稱(cheng)(cheng)重(zhong)(zhong)數(shu)據(ju)不精確、不真實和(he)不穩定。

2、 模擬式

汽車衡

的(de)偏載調(diao)試純粹(cui)依靠機(ji)械式(shi)電位器的(de)手工(gong)調(diao)整，無(wu)法保證(zheng)調(diao)試精(jing)確度（對(dui)大噸位的(de)衡器尤(you)為明顯）。在日常使用中(zhong)，機(ji)械式(shi)電位器會因(yin)振動、溫差等因(yin)素發生變化，固難(nan)以保證(zheng)稱(cheng)重數據的(de)長期穩定性(xing)。

3、

數字式汽車衡

的(de)重量感(gan)應元（傳感(gan)器）采(cai)集傳輸(shu)出來的(de)信號直(zhi)接為數字(zi)信號，*，數字(zi)信號不會受傳輸(shu)距離、溫度(du)、濕度(du)、電磁場干擾而發生變(bian)化，故能保證(zheng)稱重顯示數據(ju)與原始采(cai)集數據(ju)的(de)*性。

九原便攜式地磅*阿勒泰防爆秤

 4、

數字式汽車衡

的偏載調(diao)(diao)試(shi)*由微電腦完成，消除了(le)(le)因手工(gong)調(diao)(diao)試(shi)而引起的調(diao)(diao)試(shi)誤(wu)差，貯存在微電腦中的調(diao)(diao)試(shi)數(shu)據也不(bu)會因振動、溫差等因素(su)發生(sheng)變化，故保證了(le)(le)稱重數(shu)據的精確(que)度與長期穩定(ding)性。

5、

數字式汽車衡

信號傳(chuan)輸線上一旦(dan)被加裝遙控(kong)器，儀(yi)表顯示器會*時間(jian)感(gan)知，并發出指令(ling)，使(shi)傳(chuan)感(gan)器停(ting)止工作。因為

電子汽車衡

大多安裝在(zai)露(lu)天，社(she)會上(shang)有(you)些人為謀取不法利益，對

汽車衡

秘密加裝(zhuang)(zhuang)重量信(xin)號(hao)遙(yao)控(kong)器(qi)(qi)，而(er)模擬式汽車衡20～30米的信(xin)號(hao)傳輸(shu)通道恰恰是這些人加裝(zhuang)(zhuang)遙(yao)控(kong)器(qi)(qi)的主要位置，導致很多用戶的利(li)益受(shou)到損(sun)害。

從上述概念(nian)來講，模擬式汽車衡已經不適合社會發展(zhan)了，勢必(bi)會被淘汰出稱重領(ling)域,取而代之的是新(xin)一代

數字式汽車衡

九原便攜式地磅*阿勒泰防爆秤

一(yi).汽(qi)車衡(heng)各稱重段誤差大(da)(即點差大(da))如何處(chu)理。(以(yi)一(yi)煉鋼(gang)汽(qi)車衡(heng)為(wei)例)

故障現象：一(yi)臺重車(80噸左右)在秤臺停(ting)車位置不(bu)同(tong)，稱量的數值不(bu)同(tong)。

分析處理：

1．從(cong)故障現象可分析出(chu)該(gai)秤各承重(zhong)點(共8點)誤差大，測試各傳(chuan)感(gan)(gan)器的激勵電壓及輸出(chu)信號(hao)，與原始記錄進行(xing)比(bi)較，發現西(xi)北中(zhong)傳(chuan)感(gan)(gan)器激勵電壓變化(hua)大，檢查(cha)該(gai)接(jie)線端子(在接(jie)線盒(he)處)發現一個微調電阻有問題，可以認為該(gai)接(jie)線盒(he)有問題。更換該(gai)接(jie)線盒(he)，用砝(fa)碼壓點(8點)，用標(biao)(biao)準(zhun)檢衡車標(biao)(biao)定。

2．檢查秤體、限(xian)位(wei)裝置(zhi)、接(jie)線盒、傳感器受力狀態、各插頭(tou)、信息線均無問(wen)題(ti)后，用(yong)砝碼(ma)壓點(8點)，用(yong)標(biao)準檢衡(heng)車(che)標(biao)定，或用(yong)滿量(liang)程砝碼(ma)標(biao)定。

說明：對于(yu)點差大的處理，一定(ding)要認真(zhen)仔細的檢查各個部件，測試傳感器的輸入輸出(chu)電(dian)壓，在確(que)認故(gu)障原因后，方可采用(yong)用(yong)砝碼壓點的方法。

二(er).汽(qi)車衡(平臺秤)稱重儀表不顯(xian)示空(kong)秤零點，只顯(xian)示光標如何處(chu)理。(以大無(wu)縫汽(qi)車衡為例)

故障現象：稱(cheng)重儀表不(bu)顯示空秤零點，只顯示光標。

分析處理：在8142型稱重儀表表后九針插頭處測(ce)試(shi)儀表輸(shu)出激勵電壓正(zheng)常(12.5V)輸(shu)入信號不穩(wen)定；

檢(jian)查儀表接地(di)及信(xin)息線(xian)(xian)的屏蔽、絕緣良(liang)好(hao)；在接線(xian)(xian)盒處測輸出信(xin)號(hao)仍不穩(wen)定(ding)，逐一拆下(xia)各傳(chuan)(chuan)感器(qi)信(xin)號(hao)線(xian)(xian)并(bing)測試，發現北中點傳(chuan)(chuan)感器(qi)輸出信(xin)號(hao)不穩(wen)定(ding)，拆下(xia)此(ci)傳(chuan)(chuan)感器(qi)所有(you)連線(xian)(xian)，接通儀表電源，儀表清零后(hou)，顯(xian)示示值(zhi)為零，且穩(wen)定(ding)；由此(ci)可判斷出此(ci)傳(chuan)(chuan)感器(qi)(測阻值(zhi)異常)有(you)問(wen)題，更換(huan)該傳(chuan)(chuan)感并(bing)校秤，故障(zhang)排除。

說明：詢問當班(ban)計量(liang)員，得知(zhi)現場吊裝(zhuang)鋼(gang)坯(pi)脫落(luo)，落(luo)點在該傳(chuan)感(gan)器正上方。

三.汽(qi)車衡稱重(zhong)儀(yi)表零點偶爾上漂移。(以一煉鋼汽(qi)車衡為例)

故障現象：儀表顯示不(bu)正常(chang)，零點上漂zui多達8噸，有(you)時(shi)(shi)穩定(ding)不(bu)變，故障持續(xu)時(shi)(shi)間短，突發性(xing)大，有(you)時(shi)(shi)幾天(tian)，有(you)時(shi)(shi)幾小時(shi)(shi)出現一(yi)次。

九原便攜式地磅*阿勒泰防爆秤

如果(guo)無(wu)人值守汽車衡無(wu)顯示(shi):是(shi)(shi)(shi)(shi)(shi)(shi)(shi)否(fou)(fou)(fou)(fou)(fou)(fou)機(ji)(ji)(ji)內電(dian)(dian)(dian)池欠壓造成(cheng)自動關機(ji)(ji)(ji)(有內置電(dian)(dian)(dian)池機(ji)(ji)(ji)種)交流(liu)電(dian)(dian)(dian)源(yuan)(yuan)電(dian)(dian)(dian)壓是(shi)(shi)(shi)(shi)(shi)(shi)(shi)否(fou)(fou)(fou)(fou)(fou)(fou)與(yu)產品標(biao)示(shi)的電(dian)(dian)(dian)壓相符保(bao)險(xian)絲(si)是(shi)(shi)(shi)(shi)(shi)(shi)(shi)否(fou)(fou)(fou)(fou)(fou)(fou)熔斷(使用交流(liu)電(dian)(dian)(dian)機(ji)(ji)(ji)種)，無(wu)法(fa)充電(dian)(dian)(dian):交流(liu)電(dian)(dian)(dian)源(yuan)(yuan)電(dian)(dian)(dian)壓是(shi)(shi)(shi)(shi)(shi)(shi)(shi)否(fou)(fou)(fou)(fou)(fou)(fou)與(yu)產品標(biao)示(shi)的電(dian)(dian)(dian)壓相符保(bao)險(xian)絲(si)是(shi)(shi)(shi)(shi)(shi)(shi)(shi)否(fou)(fou)(fou)(fou)(fou)(fou)熔斷。    其次(ci)數字跳(tiao)動:感(gan)應(ying)器(qi)連(lian)線(xian)(xian)是(shi)(shi)(shi)(shi)(shi)(shi)(shi)否(fou)(fou)(fou)(fou)(fou)(fou)良好(hao)感(gan)應(ying)器(qi)及顯示(shi)器(qi)是(shi)(shi)(shi)(shi)(shi)(shi)(shi)否(fou)(fou)(fou)(fou)(fou)(fou)受(shou)潮,感(gan)量(liang)設(she)(she)置是(shi)(shi)(shi)(shi)(shi)(shi)(shi)否(fou)(fou)(fou)(fou)(fou)(fou)過(guo)(guo)(guo)小,AD轉換速(su)率是(shi)(shi)(shi)(shi)(shi)(shi)(shi)否(fou)(fou)(fou)(fou)(fou)(fou)設(she)(she)置過(guo)(guo)(guo)高,是(shi)(shi)(shi)(shi)(shi)(shi)(shi)否(fou)(fou)(fou)(fou)(fou)(fou)有振動、風吹等(deng)干擾,秤(cheng)臺是(shi)(shi)(shi)(shi)(shi)(shi)(shi)否(fou)(fou)(fou)(fou)(fou)(fou)碰觸異物，線(xian)(xian)性不(bu)佳:是(shi)(shi)(shi)(shi)(shi)(shi)(shi)否(fou)(fou)(fou)(fou)(fou)(fou)感(gan)應(ying)器(qi)保(bao)護裝置起作用是(shi)(shi)(shi)(shi)(shi)(shi)(shi)否(fou)(fou)(fou)(fou)(fou)(fou)經(jing)過(guo)(guo)(guo)線(xian)(xian)性校(xiao)正(zheng)(有線(xian)(xian)性校(xiao)正(zheng)機(ji)(ji)(ji)種)線(xian)(xian)性校(xiao)正(zheng)所用砝(fa)碼是(shi)(shi)(shi)(shi)(shi)(shi)(shi)否(fou)(fou)(fou)(fou)(fou)(fou)正(zheng)確，是(shi)(shi)(shi)(shi)(shi)(shi)(shi)否(fou)(fou)(fou)(fou)(fou)(fou)感(gan)應(ying)器(qi)超載。    如果(guo)發現無(wu)法(fa)打(da)印(yin)(yin)(yin)(yin):印(yin)(yin)(yin)(yin)表機(ji)(ji)(ji)類型是(shi)(shi)(shi)(shi)(shi)(shi)(shi)否(fou)(fou)(fou)(fou)(fou)(fou)設(she)(she)置正(zheng)確,讀(du)數是(shi)(shi)(shi)(shi)(shi)(shi)(shi)否(fou)(fou)(fou)(fou)(fou)(fou)穩(wen)定(ding)、穩(wen)定(ding)標(biao)記是(shi)(shi)(shi)(shi)(shi)(shi)(shi)否(fou)(fou)(fou)(fou)(fou)(fou)亮(liang),印(yin)(yin)(yin)(yin)表機(ji)(ji)(ji)連(lian)線(xian)(xian)是(shi)(shi)(shi)(shi)(shi)(shi)(shi)否(fou)(fou)(fou)(fou)(fou)(fou)插好(hao),印(yin)(yin)(yin)(yin)表機(ji)(ji)(ji)電(dian)(dian)(dian)源(yuan)(yuan)是(shi)(shi)(shi)(shi)(shi)(shi)(shi)否(fou)(fou)(fou)(fou)(fou)(fou)打(da)開,印(yin)(yin)(yin)(yin)表機(ji)(ji)(ji)是(shi)(shi)(shi)(shi)(shi)(shi)(shi)否(fou)(fou)(fou)(fou)(fou)(fou)聯機(ji)(ji)(ji)，無(wu)法(fa)累加(jia):累加(jia)前是(shi)(shi)(shi)(shi)(shi)(shi)(shi)否(fou)(fou)(fou)(fou)(fou)(fou)回零(ling)(ling)位(wei)按累加(jia)鍵時是(shi)(shi)(shi)(shi)(shi)(shi)(shi)否(fou)(fou)(fou)(fou)(fou)(fou)穩(wen)定(ding)。    若是(shi)(shi)(shi)(shi)(shi)(shi)(shi)無(wu)法(fa)通過(guo)(guo)(guo)串行端口通訊:波特率、發送方式設(she)(she)置是(shi)(shi)(shi)(shi)(shi)(shi)(shi)否(fou)(fou)(fou)(fou)(fou)(fou)正(zheng)確,RS-232C連(lian)線(xian)(xian)接觸是(shi)(shi)(shi)(shi)(shi)(shi)(shi)否(fou)(fou)(fou)(fou)(fou)(fou)良好(hao),RS-232C連(lian)線(xian)(xian)是(shi)(shi)(shi)(shi)(shi)(shi)(shi)否(fou)(fou)(fou)(fou)(fou)(fou)過(guo)(guo)(guo)長，開機(ji)(ji)(ji)不(bu)歸零(ling)(ling):自動歸零(ling)(ling)范圍是(shi)(shi)(shi)(shi)(shi)(shi)(shi)否(fou)(fou)(fou)(fou)(fou)(fou)設(she)(she)置過(guo)(guo)(guo)小,秤(cheng)臺上(shang)是(shi)(shi)(shi)(shi)(shi)(shi)(shi)否(fou)(fou)(fou)(fou)(fou)(fou)有物品，手動歸零(ling)(ling)無(wu)效:手動歸零(ling)(ling)范圍是(shi)(shi)(shi)(shi)(shi)(shi)(shi)否(fou)(fou)(fou)(fou)(fou)(fou)設(she)(she)置過(guo)(guo)(guo)小,當前讀(du)數是(shi)(shi)(shi)(shi)(shi)(shi)(shi)否(fou)(fou)(fou)(fou)(fou)(fou)穩(wen)定(ding)。    如果(guo)無(wu)法(fa)秤(cheng)重:感(gan)應(ying)器(qi)連(lian)線(xian)(xian)是(shi)(shi)(shi)(shi)(shi)(shi)(shi)否(fou)(fou)(fou)(fou)(fou)(fou)牢固,是(shi)(shi)(shi)(shi)(shi)(shi)(shi)否(fou)(fou)(fou)(fou)(fou)(fou)經(jing)過(guo)(guo)(guo)標(biao)定(ding)是(shi)(shi)(shi)(shi)(shi)(shi)(shi)否(fou)(fou)(fou)(fou)(fou)(fou)以(yi)超級用戶密碼進入，是(shi)(shi)(shi)(shi)(shi)(shi)(shi)否(fou)(fou)(fou)(fou)(fou)(fou)短(duan)路校(xiao)正(zheng)跳(tiao)線(xian)(xian)，卸(xie)載后不(bu)歸零(ling)(ling):零(ling)(ling)位(wei)跟蹤設(she)(she)置是(shi)(shi)(shi)(shi)(shi)(shi)(shi)否(fou)(fou)(fou)(fou)(fou)(fou)過(guo)(guo)(guo)小,秤(cheng)臺是(shi)(shi)(shi)(shi)(shi)(shi)(shi)否(fou)(fou)(fou)(fou)(fou)(fou)碰觸異物，背光無(wu)效:是(shi)(shi)(shi)(shi)(shi)(shi)(shi)否(fou)(fou)(fou)(fou)(fou)(fou)電(dian)(dian)(dian)池不(bu)足,當前重量(liang)是(shi)(shi)(shi)(shi)(shi)(shi)(shi)否(fou)(fou)(fou)(fou)(fou)(fou)小於小秤(cheng)量(liang)。