氣(qi)(qi)(qi)體(ti)(ti)分(fen)析(xi)(xi)儀(yi)(yi)器是(shi)(shi)一種(zhong)(zhong)用(yong)(yong)來(lai)進行氣(qi)(qi)(qi)體(ti)(ti)成分(fen)分(fen)析(xi)(xi)檢驗的(de)(de)(de)工(gong)(gong)具，借(jie)助(zhu)它(ta)能在某些(xie)成分(fen)種(zhong)(zhong)類和含量的(de)(de)(de)數據。但是(shi)(shi)，氣(qi)(qi)(qi)體(ti)(ti)分(fen)析(xi)(xi)儀(yi)(yi)器不是(shi)(shi)一種(zhong)(zhong)簡單的(de)(de)(de)工(gong)(gong)具，它(ta)既不像流量計(ji)、壓力表那(nei)樣結構簡單，也不像各種(zhong)(zhong)熱工(gong)(gong)儀(yi)(yi)表那(nei)樣易(yi)于操作使用(yong)(yong)。它(ta)是(shi)(shi)一類結構復雜、使用(yong)(yong)技術難度(du)較大的(de)(de)(de)工(gong)(gong)具，使用(yong)(yong)氣(qi)(qi)(qi)體(ti)(ti)分(fen)析(xi)(xi)儀(yi)(yi)器是(shi)(shi)一項較復雜且不易(yi)掌握的(de)(de)(de)技術。

　　一般地說，氣體分析儀器應(ying)用本身是一門技(ji)術工(gong)作(zuo)，而且是一種(zhong)具有研究性(xing)質的(de)(de)工(gong)作(zuo)。但(dan)是，這(zhe)一點(dian)是不(bu)為行外(wai)人所認(ren)知和理解(jie)的(de)(de)。

　　氣體分析(xi)(xi)儀器應用難點分析(xi)(xi)：關于氣體溫濕度傳感器分析(xi)(xi)儀器應用的難點，從以下幾方面分析(xi)(xi)可以概略地(di)了(le)解。

　　1、氣(qi)(qi)體分(fen)(fen)析(xi)是(shi)實現(xian)一(yi)(yi)(yi)系(xi)(xi)(xi)列的(de)(de)(de)化(hua)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)過(guo)(guo)程(cheng)一(yi)(yi)(yi)臺氣(qi)(qi)體分(fen)(fen)析(xi)儀(yi)(yi)或(huo)一(yi)(yi)(yi)套(tao)氣(qi)(qi)體分(fen)(fen)析(xi)系(xi)(xi)(xi)統(tong)(tong)相(xiang)當于一(yi)(yi)(yi)套(tao)完整的(de)(de)(de)化(hua)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)藝(yi)設備(bei)(bei)，因(yin)此，氣(qi)(qi)體分(fen)(fen)析(xi)儀(yi)(yi)器系(xi)(xi)(xi)統(tong)(tong)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)作過(guo)(guo)程(cheng)就(jiu)(jiu)是(shi)在(zai)實現(xian)一(yi)(yi)(yi)系(xi)(xi)(xi)列的(de)(de)(de)化(hua)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)過(guo)(guo)程(cheng)。若想通過(guo)(guo)氣(qi)(qi)體分(fen)(fen)析(xi)得準確數據，就(jiu)(jiu)了(le)解這一(yi)(yi)(yi)系(xi)(xi)(xi)列化(hua)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)過(guo)(guo)程(cheng)中各階段的(de)(de)(de)情況及(ji)變化(hua)，認(ren)真研究并掌握(wo)其中的(de)(de)(de)規律，只(zhi)有這樣(yang)才能達(da)到準確測(ce)定的(de)(de)(de)目的(de)(de)(de)。應當指出(chu)，不僅在(zai)一(yi)(yi)(yi)臺氣(qi)(qi)體分(fen)(fen)析(xi)儀(yi)(yi)器內部具備(bei)(bei)一(yi)(yi)(yi)套(tao)化(hua)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)藝(yi)過(guo)(guo)程(cheng)的(de)(de)(de)同(tong)樣(yang)情況和條件，而(er)且，有時(shi)在(zai)儀(yi)(yi)器的(de)(de)(de)樣(yang)氣(qi)(qi)預處(chu)理部分(fen)(fen)（含取樣(yang)系(xi)(xi)(xi)統(tong)(tong)）也同(tong)樣(yang)是(shi)一(yi)(yi)(yi)套(tao)化(hua)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)藝(yi)過(guo)(guo)程(cheng)。如遇到較復雜、工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)藝(yi)技術條件的(de)(de)(de)話，那么(me)樣(yang)氣(qi)(qi)預處(chu)理系(xi)(xi)(xi)統(tong)(tong)所(suo)體現(xian)的(de)(de)(de)化(hua)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)過(guo)(guo)程(cheng)還是(shi)復雜的(de)(de)(de)，相(xiang)當于一(yi)(yi)(yi)個(ge)小化(hua)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)廠的(de)(de)(de)凈化(hua)處(chu)理工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)藝(yi)過(guo)(guo)程(cheng)。由此可見，氣(qi)(qi)體分(fen)(fen)析(xi)的(de)(de)(de)過(guo)(guo)程(cheng)就(jiu)(jiu)是(shi)在(zai)了(le)解并掌握(wo)整個(ge)化(hua)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)過(guo)(guo)程(cheng)系(xi)(xi)(xi)統(tong)(tong)條件的(de)(de)(de)前提下，嚴格控制(zhi)各種影(ying)響測(ce)定條件的(de)(de)(de)因(yin)素，從而(er)找到工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)藝(yi)及(ji)管理人員所(suo)需要(yao)的(de)(de)(de)準確數據。

　　2、應用過程中控制影響因素(su)和(he)排(pai)除干擾因素(su)困難較(jiao)大

　　在(zai)儀器應(ying)用的(de)(de)過程中(zhong)，影(ying)(ying)響(xiang)因(yin)素(su)種類較多(duo)且變化(hua)較復(fu)(fu)雜，而要(yao)想(xiang)有效(xiao)地控制這些影(ying)(ying)響(xiang)因(yin)素(su)及(ji)排除干(gan)擾測(ce)定(ding)的(de)(de)因(yin)素(su)則(ze)困(kun)難比(bi)較大。例如(ru)微(wei)量(liang)(liang)氧(yang)的(de)(de)測(ce)定(ding)，不(bu)但要(yao)嚴格控制系統(tong)材質和(he)密(mi)封，而且系統(tong)的(de)(de)潔凈等諸多(duo)因(yin)素(su)也逐一解(jie)決好，否(fou)則(ze)，氧(yang)成分(fen)(fen)分(fen)(fen)析不(bu)會準(zhun)確的(de)(de)測(ce)定(ding)結果。而對于氣體(ti)(ti)中(zhong)微(wei)量(liang)(liang)水含量(liang)(liang)的(de)(de)測(ce)定(ding)，除了(le)考慮(lv)以上提(ti)到的(de)(de)各種影(ying)(ying)響(xiang)因(yin)素(su)外，還考慮(lv)到樣氣中(zhong)的(de)(de)水在(zai)管道內的(de)(de)吸附平(ping)衡問(wen)(wen)題(ti)，而這一問(wen)(wen)題(ti)的(de)(de)妥善(shan)處(chu)理(li)依靠(kao)反復(fu)(fu)試驗，了(le)解(jie)其變化(hua)情況(kuang)和(he)規律，掌握其中(zhong)的(de)(de)操作技術(shu)，以便找(zhao)到準(zhun)確無誤的(de)(de)結果。當然，使用氣相色譜儀測(ce)定(ding)高純氣體(ti)(ti)中(zhong)ppm—ppb級雜質成分(fen)(fen)含量(liang)(liang)要(yao)考慮(lv)和(he)控制的(de)(de)影(ying)(ying)響(xiang)因(yin)素(su)就復(fu)(fu)雜了(le)。

　　3、微(wei)量氣體成分分析的影響因素復雜

　　氣(qi)體(ti)(ti)(ti)成(cheng)分(fen)在(zai)(zai)管(guan)(guan)(guan)道及設備中流動時(shi)發生的(de)(de)微(wei)觀變(bian)化是(shi)復雜的(de)(de)、多(duo)變(bian)的(de)(de)。在(zai)(zai)常量(liang)(liang)氣(qi)體(ti)(ti)(ti)成(cheng)分(fen)分(fen)析時(shi)可以忽略(lve)的(de)(de)諸多(duo)影(ying)響(xiang)因素，在(zai)(zai)微(wei)量(liang)(liang)氣(qi)體(ti)(ti)(ti)成(cheng)分(fen)分(fen)析時(shi)不僅(jin)不能(neng)忽略(lve)，反而認真對(dui)待，此(ci)時(shi)，這些因素已經(jing)成(cheng)為(wei)影(ying)響(xiang)微(wei)量(liang)(liang)氣(qi)體(ti)(ti)(ti)成(cheng)分(fen)分(fen)析正確結果的(de)(de)主要(yao)矛(mao)盾(dun)，逐一排除和解決才(cai)能(neng)使微(wei)量(liang)(liang)氣(qi)體(ti)(ti)(ti)分(fen)析儀(yi)器工作(zuo)(zuo)順利完成(cheng)。這些影(ying)響(xiang)因素主要(yao)包括以下幾個方(fang)面：①取樣管(guan)(guan)(guan)路(lu)內(nei)氣(qi)體(ti)(ti)(ti)多(duo)次的(de)(de)反復混(hun)合；②管(guan)(guan)(guan)壁與氣(qi)體(ti)(ti)(ti)成(cheng)分(fen)的(de)(de)物理(li)化學作(zuo)(zuo)用；③管(guan)(guan)(guan)路(lu)材質(zhi)；④管(guan)(guan)(guan)路(lu)連接方(fang)式；⑤管(guan)(guan)(guan)路(lu)潔凈程度。