選購(gou)檢(jian)(jian)(jian)漏(lou)(lou)儀(yi)時注(zhu)意(yi)(yi)檢(jian)(jian)(jian)漏(lou)(lou)需求(qiu)和(he)設備(bei)功能(neng)(neng)的匹配(pei)度，不同的產(chan)品檢(jian)(jian)(jian)漏(lou)(lou)操(cao)作時所需要(yao)的模式(shi)等都有(you)著顯(xian)著的區別，消(xiao)費(fei)者在選購(gou)氦(hai)質(zhi)譜(pu)(pu)檢(jian)(jian)(jian)漏(lou)(lou)儀(yi)時必(bi)須要(yao)根據產(chan)品的檢(jian)(jian)(jian)測功能(neng)(neng)需求(qiu)進(jin)(jin)行(xing)(xing)挑選，消(xiao)費(fei)者在選購(gou)氦(hai)質(zhi)譜(pu)(pu)檢(jian)(jian)(jian)漏(lou)(lou)儀(yi)時必(bi)須要(yao)注(zhu)意(yi)(yi)這(zhe)種儀(yi)器自(zi)身的能(neng)(neng)力和(he)消(xiao)費(fei)的需求(qiu)，并且在挑選氦(hai)質(zhi)譜(pu)(pu)檢(jian)(jian)(jian)漏(lou)(lou)儀(yi)時注(zhu)意(yi)(yi)這(zhe)種設備(bei)的價格和(he)操(cao)作模式(shi)，氦(hai)質(zhi)譜(pu)(pu)檢(jian)(jian)(jian)漏(lou)(lou)儀(yi)的內部一般有(you)標(biao)準(zhun)漏(lou)(lou)孔(kong)(kong)，可將標(biao)準(zhun)漏(lou)(lou)孔(kong)(kong)拆(chai)卸進(jin)(jin)行(xing)(xing)校(xiao)準(zhun)，如果不能(neng)(neng)單獨(du)校(xiao)準(zhun)標(biao)準(zhun)漏(lou)(lou)孔(kong)(kong)，就可考慮直接通過氦(hai)質(zhi)譜(pu)(pu)檢(jian)(jian)(jian)漏(lou)(lou)儀(yi)進(jin)(jin)行(xing)(xing)漏(lou)(lou)率部分的校(xiao)準(zhun)。

為了(le)避(bi)免串液故障發生(sheng)，需要對導流區(qu)域和(he)(he)(he)二道密封區(qu)域進(jin)行氦質譜檢(jian)(jian)漏。采(cai)用(yong)(yong)真空(kong)(kong)法進(jin)行檢(jian)(jian)漏時(shi)，采(cai)用(yong)(yong)水(shui)(shui)環(huan)泵(beng)、旋(xuan)(xuan)片泵(beng)、不銹鋼波紋(wen)管(guan)、球閥、節流閥組建真空(kong)(kong)系(xi)統。首先使(shi)用(yong)(yong)水(shui)(shui)環(huan)泵(beng)抽真空(kong)(kong)，然后充(chong)入(ru)氮氣(qi)，再次(ci)使(shi)用(yong)(yong)水(shui)(shui)環(huan)泵(beng)抽真空(kong)(kong)，反復幾次(ci)對換熱器內部(bu)(bu)抽出水(shui)(shui)蒸氣(qi)和(he)(he)(he)粉塵(chen)。使(shi)用(yong)(yong)工業吸塵(chen)器對換熱器外表面除塵(chen)和(he)(he)(he)干燥。使(shi)用(yong)(yong)旋(xuan)(xuan)片泵(beng)抽真空(kong)(kong)和(he)(he)(he)氮氣(qi)置換的(de)方式對換熱器內部(bu)(bu)進(jin)一步干燥。干燥后在管(guan)熱管(guan)抽真空(kong)(kong)后，在的(de)漏點(dian)噴氦氣(qi)，觀察氦檢(jian)(jian)儀顯示情況。對漏點(dian)進(jin)行堵漏。

氦質譜檢(jian)(jian)(jian)漏(lou)儀(yi)使用氦氣(qi)(qi)(qi)(qi)作(zuo)為(wei)示蹤氣(qi)(qi)(qi)(qi)體，氦是(shi)單(dan)原子稀有氣(qi)(qi)(qi)(qi)體分子，在(zai)空氣(qi)(qi)(qi)(qi)中的(de)(de)(de)含量(liang)(5.2ppm)，家電(dian)行(xing)業氦檢(jian)(jian)(jian)漏(lou)公司， 無色、無味，常溫下為(wei)氣(qi)(qi)(qi)(qi)態的(de)(de)(de)惰性氣(qi)(qi)(qi)(qi)體，極不活潑(po)，既不能燃燒，也不助燃，化學性能穩定。在(zai)檢(jian)(jian)(jian)測(ce)器(qi)件的(de)(de)(de)密封性能時(shi)，遇到(dao)器(qi)件大漏(lou)時(shi)，有大量(liang)的(de)(de)(de)氦氣(qi)(qi)(qi)(qi)進入氦質譜檢(jian)(jian)(jian)漏(lou)儀(yi)，短時(shi)間內儀(yi)器(qi)內部氦氣(qi)(qi)(qi)(qi)難以清除，造成儀(yi)器(qi)的(de)(de)(de)本底升高，儀(yi)器(qi)的(de)(de)(de)檢(jian)(jian)(jian)測(ce)靈敏度降低，影響儀(yi)器(qi)的(de)(de)(de)再次(ci)檢(jian)(jian)(jian)測(ce)精度。