蘭州510所建(jian)(jian)立了(le)國內(nei)測量(liang)范圍(wei)較(jiao)寬，不(bu)(bu)確定度較(jiao)小(xiao)的(de)正(zheng)壓(ya)(ya)(ya)漏(lou)(lou)(lou)率(lv)(lv)校(xiao)(xiao)(xiao)(xiao)準(zhun)裝置(zhi)。計(ji)量(liang)院在(zai)2010年(nian)前(qian)后也搭建(jian)(jian)了(le)一套試驗(yan)(yan)用正(zheng)壓(ya)(ya)(ya)漏(lou)(lou)(lou)孔(kong)校(xiao)(xiao)(xiao)(xiao)準(zhun)裝置(zhi)。并與今年(nian)正(zheng)式立項建(jian)(jian)立正(zheng)壓(ya)(ya)(ya)漏(lou)(lou)(lou)孔(kong)校(xiao)(xiao)(xiao)(xiao)準(zhun)裝置(zhi)，涵(han)蓋了(le)專題中第二，三(san)種正(zheng)壓(ya)(ya)(ya)漏(lou)(lou)(lou)孔(kong)的(de)校(xiao)(xiao)(xiao)(xiao)準(zhun)。上海市計(ji)量(liang)測試技術(shu)研究(jiu)院在(zai)2004年(nian)建(jian)(jian)立國內(nei)一套正(zheng)常(chang)開展量(liang)值溯源的(de)正(zheng)壓(ya)(ya)(ya)漏(lou)(lou)(lou)率(lv)(lv)校(xiao)(xiao)(xiao)(xiao)準(zhun)校(xiao)(xiao)(xiao)(xiao)準(zhun)裝置(zhi)，并通過(guo)CNAC實驗(yan)(yan)室(shi)認(ren)證(zheng)。近幾年(nian)來該(gai)裝置(zhi)每年(nian)完成超過(guo)500件(jian)標(biao)準(zhun)漏(lou)(lou)(lou)孔(kong)的(de)校(xiao)(xiao)(xiao)(xiao)準(zhun)服(fu)務，在(zai)長(chang)期(qi)的(de)校(xiao)(xiao)(xiao)(xiao)準(zhun)過(guo)程(cheng)中驗(yan)(yan)證(zheng)了(le)裝置(zhi)和校(xiao)(xiao)(xiao)(xiao)準(zhun)規范在(zai)量(liang)值的(de)不(bu)(bu)確定度、長(chang)期(qi)穩定性(xing)方(fang)面(mian)的(de)成熟。為國內(nei)起草該(gai)范圍(wei)的(de)正(zheng)壓(ya)(ya)(ya)漏(lou)(lou)(lou)孔(kong)的(de)校(xiao)(xiao)(xiao)(xiao)準(zhun)規范做好了(le)技術(shu)準(zhun)備。標(biao)準(zhun)漏(lou)(lou)(lou)孔(kong)需按(an)規范定期(qi)進行(xing)性(xing)能校(xiao)(xiao)(xiao)(xiao)準(zhun)與核查(cha)。福州冷(leng)媒漏(lou)(lou)(lou)孔(kong)生產廠(chang)家

可調(diao)通(tong)(tong)(tong)道(dao)型漏(lou)(lou)孔(kong)是(shi)一(yi)種具有特(te)(te)定(ding)技(ji)術、規(gui)格和特(te)(te)點(dian)的漏(lou)(lou)孔(kong)，?它(ta)是(shi)屬于實(shi)(shi)漏(lou)(lou)型漏(lou)(lou)孔(kong)，?可調(diao)通(tong)(tong)(tong)道(dao)型其漏(lou)(lou)孔(kong)元件是(shi)通(tong)(tong)(tong)過物理節流(liu)(liu)形成的漏(lou)(lou)氣(qi)(qi)通(tong)(tong)(tong)道(dao)。?這(zhe)種漏(lou)(lou)孔(kong)能夠通(tong)(tong)(tong)過所有氣(qi)(qi)體(ti)成分，?因此在(zai)使(shi)用時(shi)需(xu)要使(shi)用純氣(qi)(qi)體(ti)以(yi)獲(huo)得所需(xu)氣(qi)(qi)體(ti)的漏(lou)(lou)率。?可調(diao)通(tong)(tong)(tong)道(dao)型漏(lou)(lou)孔(kong)產(chan)品(pin)的應用：氦質(zhi)譜檢漏(lou)(lou)真空(kong)和正壓吸(xi)法校準(zhun)(zhun)、模擬實(shi)(shi)際漏(lou)(lou)孔(kong)漏(lou)(lou)率，實(shi)(shi)際漏(lou)(lou)孔(kong)漏(lou)(lou)率的確定(ding)。可調(diao)通(tong)(tong)(tong)道(dao)型漏(lou)(lou)孔(kong)產(chan)品(pin)廣泛應用于氣(qi)(qi)體(ti)分析、?真空(kong)技(ji)術、?流(liu)(liu)量測(ce)量等領域，?以(yi)及產(chan)品(pin)的質(zhi)量控制和過程監控。杭州(zhou)漏(lou)(lou)孔(kong)穩定(ding)性標(biao)準(zhun)(zhun)漏(lou)(lou)孔(kong)能驗(yan)證各(ge)類檢漏(lou)(lou)方法的可靠(kao)性。

檢(jian)(jian)(jian)(jian)漏(lou)儀(yi)內置(zhi)標準(zhun)漏(lou)孔是(shi)檢(jian)(jian)(jian)(jian)漏(lou)儀(yi)部件中(zhong)(zhong)非常重要的(de)(de)(de)一個組(zu)成(cheng)部分，與檢(jian)(jian)(jian)(jian)漏(lou)儀(yi)的(de)(de)(de)精確(que)度(du)息(xi)息(xi)相關，檢(jian)(jian)(jian)(jian)漏(lou)儀(yi)器(qi)在(zai)檢(jian)(jian)(jian)(jian)測(ce)的(de)(de)(de)過(guo)(guo)程中(zhong)(zhong)是(shi)用來(lai)校準(zhun)其精度(du)的(de)(de)(de)一種標準(zhun)漏(lou)率。通(tong)過(guo)(guo)來(lai)比較檢(jian)(jian)(jian)(jian)漏(lou)儀(yi)對這些(xie)標準(zhun)漏(lou)孔進(jin)行(xing)檢(jian)(jian)(jian)(jian)測(ce)時的(de)(de)(de)響應值與實際尺(chi)寸上的(de)(de)(de)差(cha)(cha)異，可(ke)以評估檢(jian)(jian)(jian)(jian)漏(lou)儀(yi)的(de)(de)(de)檢(jian)(jian)(jian)(jian)測(ce)準(zhun)確(que)度(du)和它的(de)(de)(de)穩定性，在(zai)檢(jian)(jian)(jian)(jian)漏(lou)儀(yi)的(de)(de)(de)檢(jian)(jian)(jian)(jian)測(ce)過(guo)(guo)程中(zhong)(zhong)，由于(yu)受(shou)到了環(huan)境、物質等各種因素(su)的(de)(de)(de)影響，檢(jian)(jian)(jian)(jian)漏(lou)儀(yi)的(de)(de)(de)檢(jian)(jian)(jian)(jian)測(ce)結果可(ke)能(neng)會出現(xian)誤差(cha)(cha)。此(ci)時若采用標準(zhun)漏(lou)孔進(jin)行(xing)校準(zhun)，便可(ke)以提高檢(jian)(jian)(jian)(jian)測(ce)儀(yi)器(qi)的(de)(de)(de)準(zhun)確(que)性和可(ke)靠性。

氦氣真(zhen)空漏(lou)孔(kong)的(de)溯(su)源(yuan)國內(nei)(nei)開展的(de)比較早也(ye)相(xiang)對成熟一(yi)些，各級標準(zhun)(zhun)(zhun)(zhun)已經(jing)建立(li)，檢(jian)定規(gui)程(cheng)或(huo)校(xiao)準(zhun)(zhun)(zhun)(zhun)規(gui)范(fan)也(ye)早已頒布(bu)。但對其他氣體(ti)的(de)校(xiao)準(zhun)(zhun)(zhun)(zhun)還需要(yao)(yao)完(wan)善，并需要(yao)(yao)對不帶(dai)氦氣室(shi)(shi)漏(lou)孔(kong)校(xiao)準(zhun)(zhun)(zhun)(zhun)方法和(he)(he)規(gui)范(fan)內(nei)(nei)容(rong)需要(yao)(yao)增(zeng)加(jia)氣源(yuan)方式和(he)(he)要(yao)(yao)求(qiu)。該(gai)(gai)(gai)部分標準(zhun)(zhun)(zhun)(zhun)漏(lou)孔(kong)量(liang)值(zhi)溯(su)源(yuan)標準(zhun)(zhun)(zhun)(zhun)包括相(xiang)對比較法漏(lou)率校(xiao)準(zhun)(zhun)(zhun)(zhun)裝置。應為裝置成本和(he)(he)操作性的(de)要(yao)(yao)求(qiu)，在計量(liang)院和(he)(he)從事真(zhen)空檢(jian)漏(lou)量(liang)值(zhi)溯(su)源(yuan)研究的(de)院所(suo)可(ke)以采用(yong)(yong)，對于以開展量(liang)值(zhi)溯(su)源(yuan)為主要(yao)(yao)任(ren)務，技術能級有所(suo)欠(qian)缺的(de)省(sheng)市和(he)(he)企業級別的(de)校(xiao)準(zhun)(zhun)(zhun)(zhun)實(shi)驗室(shi)(shi)建議以相(xiang)對比較法漏(lou)率校(xiao)準(zhun)(zhun)(zhun)(zhun)裝置為主。特別建議采用(yong)(yong)檢(jian)漏(lou)儀比對裝置，該(gai)(gai)(gai)裝置操作簡單，成本低等特點，對實(shi)驗室(shi)(shi)應該(gai)(gai)(gai)避免采用(yong)(yong)殘余氣體(ti)四極質(zhi)譜分析儀（RGA），因為該(gai)(gai)(gai)儀器悟操作容(rong)易(yi)造(zao)成儀器的(de)損壞(huai)，影響工作效率和(he)(he)增(zeng)加(jia)維修成本。標準(zhun)(zhun)(zhun)(zhun)漏(lou)孔(kong)在**設備檢(jian)漏(lou)中作用(yong)(yong)重要(yao)(yao)。

氣(qi)密性標(biao)(biao)準(zhun)漏(lou)(lou)孔(kong)(kong)的(de)(de)原理(li)是利用(yong)節(jie)(jie)流(liu)(liu)(liu)效(xiao)應來(lai)實現氣(qi)體(ti)(ti)(ti)的(de)(de)泄漏(lou)(lou)。具(ju)體(ti)(ti)(ti)來(lai)說，當氣(qi)體(ti)(ti)(ti)通過漏(lou)(lou)孔(kong)(kong)時(shi)(shi)(shi)，由(you)于孔(kong)(kong)徑(jing)的(de)(de)限制(zhi)和(he)節(jie)(jie)流(liu)(liu)(liu)效(xiao)應的(de)(de)作(zuo)用(yong)，氣(qi)體(ti)(ti)(ti)的(de)(de)流(liu)(liu)(liu)量是會(hui)受(shou)到一定的(de)(de)限制(zhi)，從而(er)實現氣(qi)體(ti)(ti)(ti)上的(de)(de)泄漏(lou)(lou)。通過來(lai)調節(jie)(jie)漏(lou)(lou)孔(kong)(kong)的(de)(de)大小和(he)孔(kong)(kong)徑(jing)，可(ke)(ke)以(yi)控制(zhi)氣(qi)體(ti)(ti)(ti)的(de)(de)泄漏(lou)(lou)速率(lv)和(he)流(liu)(liu)(liu)量，從而(er)模擬出不(bu)同(tong)的(de)(de)氣(qi)體(ti)(ti)(ti)泄漏(lou)(lou)情況(kuang)。可(ke)(ke)做(zuo)正壓(ya)/真(zhen)(zhen)空標(biao)(biao)準(zhun)漏(lou)(lou)孔(kong)(kong)、響應速度(du)快，等待時(shi)(shi)(shi)間(jian)短、受(shou)外界(jie)溫(wen)度(du)變化影(ying)響小，溫(wen)度(du)系(xi)數小于0.5%/℃、耐高溫(wen)，耐沖(chong)擊(ji)，抗(kang)震，抗(kang)摔，壽命長、支(zhi)持定制(zhi)多種規格接(jie)頭，可(ke)(ke)配置不(bu)同(tong)品牌設計(ji)、漏(lou)(lou)率(lv)范圍(wei)廣(guang)，支(zhi)持漏(lou)(lou)率(lv)定制(zhi)，支(zhi)持同(tong)時(shi)(shi)(shi)指定漏(lou)(lou)率(lv)和(he)壓(ya)力(li)(li)。標(biao)(biao)準(zhun)漏(lou)(lou)孔(kong)(kong)是真(zhen)(zhen)空檢漏(lou)(lou)領域不(bu)可(ke)(ke)或缺(que)的(de)(de)基準(zhun)工(gong)具(ju)。天津漏(lou)(lou)孔(kong)(kong)壓(ya)力(li)(li)

標準漏孔是計量(liang)檢測工作的重(zhong)要基礎器具 。福州(zhou)冷媒漏孔生產廠家(jia)

隨著檢(jian)漏(lou)(lou)(lou)(lou)(lou)(lou)方(fang)法和技術發展，越來越強(qiang)調檢(jian)漏(lou)(lou)(lou)(lou)(lou)(lou)的(de)定(ding)(ding)量(liang)(liang)要求(qiu)，舉例：產(chan)品質量(liang)(liang)管理體系要求(qiu)，項目驗(yan)收(shou)要求(qiu)，計(ji)量(liang)(liang)活動要求(qiu)。所以標(biao)(biao)準(zhun)漏(lou)(lou)(lou)(lou)(lou)(lou)孔(kong)(kong)被采用(yong)(yong)(yong)。但是(shi)(shi)(shi)在(zai)標(biao)(biao)準(zhun)漏(lou)(lou)(lou)(lou)(lou)(lou)孔(kong)(kong)使(shi)用(yong)(yong)(yong)溯源方(fang)面(mian)存在(zai)著太多的(de)定(ding)(ding)義(yi)方(fang)面(mian)的(de)模糊甚至錯誤，根據本人(ren)多年在(zai)該(gai)領域的(de)實(shi)際經驗(yan)特此做了一(yi)定(ding)(ding)的(de)總(zong)結(jie)供行業(ye)人(ren)士參考。這里標(biao)(biao)準(zhun)漏(lou)(lou)(lou)(lou)(lou)(lou)孔(kong)(kong)是(shi)(shi)(shi)廣(guang)義(yi)上的(de)標(biao)(biao)準(zhun)漏(lou)(lou)(lou)(lou)(lou)(lou)孔(kong)(kong)，是(shi)(shi)(shi)指所有檢(jian)漏(lou)(lou)(lou)(lou)(lou)(lou)儀和檢(jian)漏(lou)(lou)(lou)(lou)(lou)(lou)系統用(yong)(yong)(yong)來定(ding)(ding)量(liang)(liang)或量(liang)(liang)值溯源經過標(biao)(biao)定(ding)(ding)的(de)漏(lou)(lou)(lou)(lou)(lou)(lou)率標(biao)(biao)準(zhun)器。按照使(shi)用(yong)(yong)(yong)方(fang)式和分為：真(zhen)空漏(lou)(lou)(lou)(lou)(lou)(lou)孔(kong)(kong)，正壓(ya)漏(lou)(lou)(lou)(lou)(lou)(lou)孔(kong)(kong)和壓(ya)差漏(lou)(lou)(lou)(lou)(lou)(lou)孔(kong)(kong)。本資料漏(lou)(lou)(lou)(lou)(lou)(lou)率不僅限于真(zhen)空檢(jian)漏(lou)(lou)(lou)(lou)(lou)(lou)量(liang)(liang)值的(de)溯源。福州冷媒漏(lou)(lou)(lou)(lou)(lou)(lou)孔(kong)(kong)生(sheng)產(chan)廠家