炯雷(lei)數(shu)(shu)(shu)顯氧(yang)指(zhi)(zhi)數(shu)(shu)(shu)測定(ding)(ding)(ding)儀分(fen)(fen)JF-3普通(tong)(tong)款與JF-3型A溫(wen)(wen)度(du)(du)(du)控(kong)(kong)(kong)制款，本次交付為(wei)(wei)JF-3普通(tong)(tong)款。在(zai)GB2406.2-2009塑料用(yong)氧(yang)指(zhi)(zhi)數(shu)(shu)(shu)法(fa)測定(ding)(ding)(ding)燃(ran)燒行為(wei)(wei)中(zhong)(zhong)3.1氧(yang)指(zhi)(zhi)數(shu)(shu)(shu)定(ding)(ding)(ding)義為(wei)(wei)通(tong)(tong)入(ru)(ru)23℃±2℃的(de)(de)(de)(de)(de)氮、氧(yang)混合氣(qi)體(ti)(ti)時，剛好維(wei)持(chi)材料燃(ran)燒的(de)(de)(de)(de)(de)最(zui)小(xiao)氧(yang)濃(nong)度(du)(du)(du)，以體(ti)(ti)積分(fen)(fen)數(shu)(shu)(shu)表示。5.4中(zhong)(zhong)氣(qi)體(ti)(ti)測量和控(kong)(kong)(kong)制裝(zhuang)置(zhi)：適于(yu)(yu)測量進入(ru)(ru)燃(ran)燒筒(tong)內混合氣(qi)體(ti)(ti)的(de)(de)(de)(de)(de)氧(yang)濃(nong)度(du)(du)(du)，準(zhun)確至±0.5%，當(dang)在(zai)23℃±2℃通(tong)(tong)過燃(ran)燒筒(tong)的(de)(de)(de)(de)(de)氣(qi)流(liu)為(wei)(wei)40mm/s±2mm/s時，調節濃(nong)度(du)(du)(du)的(de)(de)(de)(de)(de)精度(du)(du)(du)±0.1%，應(ying)提供檢(jian)(jian)測方法(fa)，確保進入(ru)(ru)然他內混合氣(qi)體(ti)(ti)的(de)(de)(de)(de)(de)溫(wen)(wen)度(du)(du)(du)為(wei)(wei)23℃±2℃，如有(you)內部(bu)探頭(tou)，則該探頭(tou)的(de)(de)(de)(de)(de)位(wei)置(zhi)與外形設計應(ying)是燃(ran)燒筒(tong)內的(de)(de)(de)(de)(de)擾動最(zui)小(xiao)。8.1中(zhong)(zhong)涉及和試樣的(de)(de)(de)(de)(de)安裝(zhuang)要求(qiu)氧(yang)指(zhi)(zhi)數(shu)(shu)(shu)測定(ding)(ding)(ding)儀應(ying)放(fang)置(zhi)在(zai)溫(wen)(wen)度(du)(du)(du)23℃±2℃的(de)(de)(de)(de)(de)環境(jing)中(zhong)(zhong)，必要時將試樣放(fang)置(zhi)在(zai)23℃±2℃和50%±5%的(de)(de)(de)(de)(de)密閉容(rong)(rong)器(qi)中(zhong)(zhong)，當(dang)需(xu)要是從(cong)容(rong)(rong)器(qi)中(zhong)(zhong)取出(chu)。標(biao)(biao)準(zhun)中(zhong)(zhong)對(dui)于(yu)(yu)試驗溫(wen)(wen)度(du)(du)(du)多處(chu)有(you)要求(qiu)，當(dang)將氧(yang)指(zhi)(zhi)數(shu)(shu)(shu)測定(ding)(ding)(ding)儀放(fang)置(zhi)于(yu)(yu)溫(wen)(wen)度(du)(du)(du)23℃±2℃的(de)(de)(de)(de)(de)環境(jing)時，通(tong)(tong)入(ru)(ru)燃(ran)燒筒(tong)的(de)(de)(de)(de)(de)混合氣(qi)流(liu)即可將溫(wen)(wen)度(du)(du)(du)控(kong)(kong)(kong)制在(zai)溫(wen)(wen)度(du)(du)(du)23℃±2℃范圍內，當(dang)不(bu)具有(you)標(biao)(biao)準(zhun)的(de)(de)(de)(de)(de)試驗室環境(jing)時，便(bian)需(xu)氧(yang)指(zhi)(zhi)數(shu)(shu)(shu)測定(ding)(ding)(ding)儀帶有(you)溫(wen)(wen)度(du)(du)(du)控(kong)(kong)(kong)制功能(neng)對(dui)標(biao)(biao)準(zhun)相關條款加以滿足。對(dui)于(yu)(yu)國屬質(zhi)檢(jian)(jian)與計量單位(wei)或出(chu)具第三(san)方計量認證報告的(de)(de)(de)(de)(de)相關單位(wei)來說(shuo)，必須，嚴格按(an)照標(biao)(biao)準(zhun)要求(qiu)來準(zhun)備實驗環境(jing)與儀器(qi)。對(dui)于(yu)(yu)普通(tong)(tong)的(de)(de)(de)(de)(de)企業用(yong)戶(hu)(hu)來說(shuo)，當(dang)不(bu)具備標(biao)(biao)準(zhun)試驗室環境(jing)，購買(mai)JF-3型A款溫(wen)(wen)度(du)(du)(du)控(kong)(kong)(kong)制型氧(yang)指(zhi)(zhi)數(shu)(shu)(shu)測定(ding)(ding)(ding)儀即可。另外需(xu)要說(shuo)明的(de)(de)(de)(de)(de)是，雖(sui)執(zhi)行標(biao)(biao)準(zhun)GB2406.2-2009是09年頒布(bu)的(de)(de)(de)(de)(de)，但各方用(yong)戶(hu)(hu)對(dui)于(yu)(yu)溫(wen)(wen)度(du)(du)(du)部(bu)分(fen)(fen)的(de)(de)(de)(de)(de)重視(shi)確是近(jin)兩(liang)年開始的(de)(de)(de)(de)(de)，用(yong)戶(hu)(hu)可根據自身要求(qiu)來進行選購。
炯雷(lei)UL94標準(zhun)水(shui)平垂(chui)直燃燒儀共(gong)鋼板靜(jing)電(dian)烤漆、通風(feng)櫥(chu)容積不小于0.5立(li)方/鋼板(ban)靜(jing)電烤漆、通風(feng)櫥容積不(bu)小于0.75立方、1.5mm磨砂不銹鋼、通風櫥容積不小(xiao)于0.5立方/1.5mm磨砂不銹鋼 、通(tong)(tong)風櫥容積(ji)不(bu)小于0.75立方(fang)(fang)四種(zhong)。四種(zhong)配置除(chu)在產品箱(xiang)體上的差(cha)別(bie)，其余并(bing)無(wu)差(cha)別(bie)。國標(biao)GB2408-2008塑料 燃燒性(xing)能的測定 水(shui)平(ping)法(fa)(fa)和(he)垂直法(fa)(fa)與UL94標(biao)準中(zhong)對于設備箱(xiang)體要(yao)(yao)求僅(jin)要(yao)(yao)求試驗(yan)室通(tong)(tong)風櫥/試驗(yan)箱(xiang)其內部容積(ji)至少(shao)0.5立方(fang)(fang)，對于材質并(bing)無(wu)要(yao)(yao)求。基礎款鋼板靜電烤(kao)漆、通風櫥容積不小于0.5立(li)方的水平垂直燃燒(shao)儀即(ji)可(ke)滿(man)足(zu)標準(zhun)要求。用戶可(ke)以按(an)照自身需(xu)求來進行選購。
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