安(an)(an)防(fang)攝像(xiang)頭是(shi)指用在(zai)安(an)(an)全防(fang)范方面的(de)攝像(xiang)頭，電堆，它的(de)主要(yao)特點是(shi)靈敏度(du)高、抗強光(guang)、畸變小、體積小、壽命長、抗震、可通(tong)過遠(yuan)程控(kong)制監(jian)(jian)測，從而(er)被廣泛應用。安(an)(an)防(fang)攝像(xiang)機是(shi)監(jian)(jian)控(kong)安(an)(an)防(fang)行業l重要(yao)的(de)組成部分，在(zai)眾多領(ling)域發揮(hui)越來越重要(yao)的(de)作用。安(an)(an)裝在(zai)戶外(wai)的(de)高清安(an)(an)防(fang)攝像(xiang)機需在(zai)惡劣的(de)戶外(wai)環境下去全天候(hou)工作，所以(yi)經常會碰到鏡頭結(jie)霧(wu)和蒙灰塵的(de)問題，從而(er)影響監(jian)(jian)控(kong)視(shi)頻(pin)得清晰度(du)和準(zhun)確度(du)。

氦質(zhi)譜檢(jian)(jian)(jian)(jian)漏(lou)(lou)(lou)儀檢(jian)(jian)(jian)(jian)漏(lou)(lou)(lou)原(yuan)理(li)及(ji)方(fang)(fang)(fang)式：氦質(zhi)譜檢(jian)(jian)(jian)(jian)漏(lou)(lou)(lou)儀的(de)檢(jian)(jian)(jian)(jian)漏(lou)(lou)(lou)方(fang)(fang)(fang)式，氦質(zhi)譜檢(jian)(jian)(jian)(jian)漏(lou)(lou)(lou)儀的(de)檢(jian)(jian)(jian)(jian)漏(lou)(lou)(lou)方(fang)(fang)(fang)式通常(chang)有兩(liang)種(zhong)，一(yi)(yi)種(zhong)為常(chang)規檢(jian)(jian)(jian)(jian)漏(lou)(lou)(lou)，另一(yi)(yi)種(zhong)為逆(ni)(ni)(ni)(ni)擴散(san)(san)(san)檢(jian)(jian)(jian)(jian)漏(lou)(lou)(lou)。逆(ni)(ni)(ni)(ni)擴散(san)(san)(san)檢(jian)(jian)(jian)(jian)漏(lou)(lou)(lou)是把被檢(jian)(jian)(jian)(jian)件(jian)(jian)(jian)接在(zai)分(fen)子(zi)(zi)泵出氣(qi)(qi)口(kou)一(yi)(yi)端(duan)，漏(lou)(lou)(lou)入的(de)氦氣(qi)(qi)由分(fen)子(zi)(zi)泵出氣(qi)(qi)口(kou)逆(ni)(ni)(ni)(ni)著泵的(de)排氣(qi)(qi)方(fang)(fang)(fang)向進入安(an)裝在(zai)泵的(de)進氣(qi)(qi)口(kou)端(duan)的(de)質(zhi)譜管內(nei)而被檢(jian)(jian)(jian)(jian)測。這(zhe)一(yi)(yi)檢(jian)(jian)(jian)(jian)漏(lou)(lou)(lou)方(fang)(fang)(fang)式是基于分(fen)子(zi)(zi)泵對不(bu)(bu)同(tong)質(zhi)量的(de)氣(qi)(qi)體具(ju)有不(bu)(bu)同(tong)壓(ya)(ya)縮比(氣(qi)(qi)體在(zai)分(fen)子(zi)(zi)泵出氣(qi)(qi)口(kou)壓(ya)(ya)強與進氣(qi)(qi)口(kou)壓(ya)(ya)強之比)即利用不(bu)(bu)同(tong)氣(qi)(qi)體的(de)逆(ni)(ni)(ni)(ni)擴散(san)(san)(san)程度(du)不(bu)(bu)同(tong)程度(du)而設(she)計的(de)。逆(ni)(ni)(ni)(ni)擴散(san)(san)(san)原(yuan)理(li)：逆(ni)(ni)(ni)(ni)擴散(san)(san)(san)方(fang)(fang)(fang)式檢(jian)(jian)(jian)(jian)漏(lou)(lou)(lou)允許被檢(jian)(jian)(jian)(jian)件(jian)(jian)(jian)內(nei)壓(ya)(ya)強較高，氦質(zhi)譜檢(jian)(jian)(jian)(jian)漏(lou)(lou)(lou)儀可達300Pa(一(yi)(yi)般(ban)常(chang)規檢(jian)(jian)(jian)(jian)漏(lou)(lou)(lou)儀為0.05Pa以下(xia))，適合檢(jian)(jian)(jian)(jian)大(da)型容器或有大(da)漏(lou)(lou)(lou)的(de)器件(jian)(jian)(jian)，也適合吸檢(jian)(jian)(jian)(jian)漏(lou)(lou)(lou)。逆(ni)(ni)(ni)(ni)擴散(san)(san)(san)方(fang)(fang)(fang)式還具(ju)有質(zhi)譜管不(bu)(bu)易受污染(ran)，燈絲壽命長等(deng)優點。

概述多(duo)(duo)通道(dao)氣(qi)(qi)密(mi)(mi)性(xing)檢(jian)(jian)(jian)(jian)測(ce)(ce)(ce)儀實現檢(jian)(jian)(jian)(jian)測(ce)(ce)(ce)的(de)(de)原理(li)：多(duo)(duo)通道(dao)氣(qi)(qi)密(mi)(mi)性(xing)檢(jian)(jian)(jian)(jian)測(ce)(ce)(ce)設(she)(she)備(bei)，也稱多(duo)(duo)工位氣(qi)(qi)密(mi)(mi)性(xing)檢(jian)(jian)(jian)(jian)測(ce)(ce)(ce)設(she)(she)備(bei)或多(duo)(duo)路氣(qi)(qi)密(mi)(mi)性(xing)檢(jian)(jian)(jian)(jian)測(ce)(ce)(ce)儀，板，能(neng)同時對(dui)多(duo)(duo)個產(chan)品進行檢(jian)(jian)(jian)(jian)測(ce)(ce)(ce)，亦可實現自動化(hua)氣(qi)(qi)密(mi)(mi)性(xing)檢(jian)(jian)(jian)(jian)測(ce)(ce)(ce)。多(duo)(duo)通道(dao)氣(qi)(qi)密(mi)(mi)性(xing)檢(jian)(jian)(jian)(jian)測(ce)(ce)(ce)設(she)(she)備(bei)的(de)(de)性(xing)能(neng)與工業級氣(qi)(qi)密(mi)(mi)性(xing)檢(jian)(jian)(jian)(jian)測(ce)(ce)(ce)設(she)(she)備(bei)一樣(yang)，但勝在檢(jian)(jian)(jian)(jian)測(ce)(ce)(ce)效率上，雙極板價(jia)格，尤其適(shi)用于(yu)需(xu)要進行大批量氣(qi)(qi)密(mi)(mi)性(xing)檢(jian)(jian)(jian)(jian)測(ce)(ce)(ce)的(de)(de)客戶。作為主流的(de)(de)氣(qi)(qi)密(mi)(mi)性(xing)，密(mi)(mi)封(feng)性(xing)，防(fang)水性(xing)，泄漏量檢(jian)(jian)(jian)(jian)測(ce)(ce)(ce)設(she)(she)備(bei)，多(duo)(duo)通道(dao)氣(qi)(qi)密(mi)(mi)性(xing)檢(jian)(jian)(jian)(jian)測(ce)(ce)(ce)設(she)(she)備(bei)以壓縮空氣(qi)(qi)為檢(jian)(jian)(jian)(jian)測(ce)(ce)(ce)介質，能(neng)高的(de)(de)效率地實現無(wu)損防(fang)水、密(mi)(mi)封(feng)、氣(qi)(qi)密(mi)(mi)性(xing)檢(jian)(jian)(jian)(jian)測(ce)(ce)(ce)。