氣體檢測儀是(shi)一種(zhong)氣(qi)體(ti)(ti)(ti)泄露(lu)濃度檢(jian)測(ce)(ce)(ce)的儀(yi)(yi)(yi)器儀(yi)(yi)(yi)表工(gong)具,其中(zhong)包括:便攜式(shi)氣(qi)體(ti)(ti)(ti)檢(jian)測(ce)(ce)(ce)儀(yi)(yi)(yi)、手持式(shi)氣(qi)體(ti)(ti)(ti)檢(jian)測(ce)(ce)(ce)儀(yi)(yi)(yi)、固定式(shi)氣(qi)體(ti)(ti)(ti)檢(jian)測(ce)(ce)(ce)儀(yi)(yi)(yi)、在線式(shi)氣(qi)體(ti)(ti)(ti)檢(jian)測(ce)(ce)(ce)儀(yi)(yi)(yi)等(deng)。主(zhu)要(yao)利(li)用(yong)氣(qi)體(ti)(ti)(ti)傳感器來檢(jian)測(ce)(ce)(ce)環境中(zhong)存在的氣(qi)體(ti)(ti)(ti)種(zhong)類,氣(qi)體(ti)(ti)(ti)傳感器是(shi)用(yong)來檢(jian)測(ce)(ce)(ce)氣(qi)體(ti)(ti)(ti)的成份和含量(liang)的傳感器。
一般認為,氣(qi)體(ti)(ti)(ti)傳(chuan)感(gan)(gan)器的定義是(shi)(shi)以檢(jian)測(ce)目標為分(fen)類(lei)基礎的,也就是(shi)(shi)說,凡是(shi)(shi)用(yong)于檢(jian)測(ce)氣(qi)體(ti)(ti)(ti)成份(fen)和(he)濃度(du)的傳(chuan)感(gan)(gan)器都稱(cheng)作氣(qi)體(ti)(ti)(ti)傳(chuan)感(gan)(gan)器,不(bu)管(guan)它是(shi)(shi)用(yong)物理方法(fa),還是(shi)(shi)用(yong)化學(xue)方法(fa)。比如,檢(jian)測(ce)氣(qi)體(ti)(ti)(ti)流量的傳(chuan)感(gan)(gan)器不(bu)被看作氣(qi)體(ti)(ti)(ti)傳(chuan)感(gan)(gan)器,但是(shi)(shi)熱導式氣(qi)體(ti)(ti)(ti)分(fen)析(xi)儀卻屬于重要的氣(qi)體(ti)(ti)(ti)傳(chuan)感(gan)(gan)器,盡管(guan)它們有時使用(yong)大(da)體(ti)(ti)(ti)一致(zhi)的檢(jian)測(ce)原(yuan)理。
北京泰科瑞(rui)迪承(cheng)接各種測試(shi)儀器、檢測儀器維(wei)修(xiu)業務,北京泰科瑞迪設有“維(wei)修檢測(ce)部門”,通過維修保養(yang)服務,能及時遇見并快速解決設(she)(she)備(bei)在(zai)使用中出現(xian)的(de)各種(zhong)問題。減少設(she)(she)備(bei)的(de)故障率,提高設(she)(she)備(bei)的(de)使用效率,讓客戶在(zai)設(she)(she)備(bei)使用中運(yun)行更便捷(jie)、省(sheng)心、經濟、更放心。
1.氣(qi)體(ti)檢測儀常見故障(zhang)與排除方(fang)法
顯示數(shu)值(zhi)與(yu)實際數(shu)值(zhi)相差較大
先評估(gu)檢測現場目標氣體(ti)的濃(nong)(nong)(nong)度(du)。一(yi)般(ban)測空(kong)氣中(zhong)的為低濃(nong)(nong)(nong)度(du),測管道或密閉空(kong)間中(zhong)的為高濃(nong)(nong)(nong)度(du)。再確認(ren)工(gong)作人員的使用方式(shi)是否(fou)正確,便攜式(shi)氣體(ti)檢測儀(yi)不能(neng)把氣嘴(zui)密封住,氣泵需保持吸力(li)。
2.儀器(qi)無法開機
當(dang)你遇到這個問(wen)題的時候,先用充(chong)電(dian)器插上(shang)充(chong)電(dian),再開(kai)(kai)機(ji);如果之(zhi)后依舊無法開(kai)(kai)機(ji),那可(ke)能(neng)是沒電(dian)了,等充(chong)一段時間的電(dian)后再試一下。
一般(ban)情況下,氣(qi)體檢(jian)測儀沒有(you)充(chong)滿電(dian)會(hui)顯示(shi)紅燈(deng),充(chong)滿則顯示(shi)綠燈(deng)。如果(guo)一直顯示(shi)綠燈(deng)但開不(bu)了(le)機(ji),那可能就是(shi)(shi)充(chong)電(dian)器(qi)出(chu)問(wen)題(ti)了(le)。更換充(chong)電(dian)器(qi)后依然無法開機(ji),你就要去檢(jian)查(cha)檢(jian)查(cha)是(shi)(shi)不(bu)是(shi)(shi)電(dian)池或者連(lian)接器(qi)出(chu)現了(le)問(wen)題(ti)。
當(dang)上述(shu)這些問(wen)題都(dou)排除后(hou),依(yi)然無法開(kai)機,就很(hen)大(da)程度上儀器的晶振壞了,需要返廠維修(xiu)。
3.檢測儀(yi)通入氣體后無反應
遇到這種(zhong)情況,要先檢查傳(chuan)感(gan)器(qi)是否(fou)松(song)動(dong)。傳(chuan)感(gan)器(qi)長時(shi)間脫離主(zhu)板(ban),剛插(cha)上去的一段時(shi)間內,儀器(qi)會(hui)出現無顯示或滿(man)量(liang)程的情況,等一段時(shi)間,儀器(qi)就會(hui)恢復(fu)正常。
如(ru)果(guo)你(ni)使用(yong)的是在線式儀器,在檢查傳感器到(dao)時候(hou),千萬不要扭動“禁止(zhi)旋動”部分(fen)。
當(dang)檢測儀顯示(shi)滿量程的時候,多半(ban)是(shi)參數設(she)置出了問(wen)題(ti),恢復出廠設(she)置即(ji)可。
4.傳感器維護
一(yi)般在(zai)安(an)裝(zhuang)使(shi)用(yong)半年(nian)到一(yi)年(nian)要(yao)進行重新檢(jian)查標定,并由(you)檢(jian)測方出檢(jian)測報告。
5.氣(qi)體探(tan)測器的傳感器喪失靈敏度
需要更換(huan),金屬管浮子流量計,渦輪流量計,渦街流量計,通過定(ding)期標(biao)定(ding)就會知道傳(chuan)感器是否失效,當標(biao)定(ding)值達(da)不(bu)到標(biao)氣值,要更換(huan)傳(chuan)感器。
氣體(ti)(ti)檢測儀(yi)維護及保養方法
1、檢查氣(qi)體流量、通常為30/h,流(liu)量(liang)過(guo)大或者過(guo)小對分(fen)析儀結(jie)果影響(xiang)較大
2、更換濾紙:停抽(chou)氣(qi)泵,過濾罐排水
3、檢查(cha)氣路系統中有無(wu)漏氣現象(xiang)。抽泣泵(beng)膜片有無(wu)破損,取樣(yang)探頭密封(feng)圈是否破裂,四通閥、冷凝汽是否損壞等(deng)
4、取(qu)樣(yang)探(tan)頭清洗(xi),取(qu)樣(yang)孔管(guan)路疏通(tong)
5、檢(jian)查冷凝器工作是否正常(chang),通常(chang)溫度調整(zheng)在(zai)3攝(she)氏度范圍內
6、檢(jian)查測量器室看是否臟污,及時清洗。
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