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class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價(jià)格要求：</span>面議</p><p><span>所在地：</span>江蘇省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>泰州消防氣體批發(fā),氣體</p><p><span>***更新：</span>2021-01-16 04:09:20</p><p><span id="click" >瀏覽次數(shù)：6次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="q8nz32e" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">常州大成工業(yè)氣體有限公司</a></p><p><span>聯(lián)系人：</span>錢經(jīng)理</p><p><span>郵箱: </span>3412274709@qq.com</p><p><span>電話: </span>18036469866</p><p><span>傳真: </span>0510_</p><p><span>網(wǎng)址: </span>http://czdcafkj.shop.88360.com</p><p><span>手機(jī): </span>0510-18036469</p><p><span>地址: </span>龍湖路33號(hào)</p><p>[當(dāng)前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="gvnp3e3" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="3jdpg2a" class="box"><p><p style="text-indent:25px"> 在基于紅外光譜技術(shù)的混合氣體檢測(cè)中，光學(xué)復(fù)用結(jié)構(gòu)是檢測(cè)系統(tǒng)的中心部分，它既是紅外光傳播的媒介，又是氣體吸收紅外光能的主要場(chǎng)所。根據(jù)光能變換過程的差別，可以將紅外光譜檢測(cè)技術(shù)分為兩種：直接檢測(cè)和間接檢測(cè)。NDIR光譜技術(shù)中采用寬帶光源，通過選擇不同中心波長和帶寬的濾光元件得到與氣體吸收特性匹配的近似單色光，然后直接被探測(cè)器探測(cè)。探測(cè)器通常集成了濾光元件，包括作用通道和參考通道，作用通道輸出的信號(hào)分別與參考信號(hào)進(jìn)行一定的運(yùn)算，以消除光源、探測(cè)器不穩(wěn)定以及外界干擾等因素帶來的影響。光源的選擇與控制、濾光元件參數(shù)的選取以及光源與探測(cè)器的匹配程度等問題，在NDIR光譜技術(shù)中都是值得深入研究的。Danilova等在實(shí)驗(yàn)中已經(jīng)證明，適當(dāng)降低驅(qū)動(dòng)電流脈沖占空比可以提高光源發(fā)光效率，泰州消防氣體批發(fā)。而合理選取濾光元件，有利于確定氣體吸收的比較好參數(shù)。為了避免紅外熱光源在調(diào)制頻率較低（小于10Hz）的情況下帶來的1/f噪聲，選取高調(diào)制頻率的LED光源和具有低時(shí)間常數(shù)的探測(cè)器，可以提高整個(gè)系統(tǒng)的檢測(cè)速度，降低噪聲。氣體，泰州消防氣體批發(fā)，泰州消防氣體批發(fā)，就選常州大成工業(yè)氣體有限公司，用戶的信賴之選，歡迎您的來電哦！泰州消防氣體批發(fā)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="泰州消防氣體批發(fā),氣體" src="https://tyunfile.71360.com/UploadFile/czdcafkj/637329346717275390/6037416.png"></div><p style="text-indent:25px"> 分析標(biāo)準(zhǔn)氣體的方法很多，但常用的主要有：氣相色譜法、化學(xué)發(fā)光法、非色散紅外法以及用于微量水和微量氧分析的其他方法。氣相色譜氣相色譜法適用于氫氣、氧氣、氮?dú)狻鍤?、氦氣、一氧化碳、二氧化碳等無機(jī)氣體，甲烷、乙烷、丙烯、及C3以上的絕大部分有機(jī)氣體的分析。通過直接法、濃縮法、反應(yīng)法等樣品處理技術(shù)的應(yīng)用，分析的含量范圍為10-9~99.999%。所以，氣相色譜法也是分析標(biāo)準(zhǔn)氣體中應(yīng)用非常多、非常普遍的方法?；瘜W(xué)發(fā)光法化學(xué)發(fā)光法是利用某些化學(xué)反應(yīng)所產(chǎn)生的發(fā)光現(xiàn)象對(duì)組分進(jìn)行分析的方法，具有靈敏度高，選擇性好，使用簡單方便、快速等特點(diǎn)。因些，適用于硫化物、氮氧化物、氨等標(biāo)準(zhǔn)氣體的分析。蕪湖FM200氣體批發(fā)常州大成工業(yè)氣體有限公司是一家專業(yè)提供氣體的公司，歡迎您的來電！</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="泰州消防氣體批發(fā),氣體" src="https://tyunfile.71360.com/UploadFile/czdcafkj/637329346427597656/442689.png"></div><p style="text-indent:25px"> 滲透管動(dòng)態(tài)配氣裝置用已知滲透率的滲透管配制標(biāo)準(zhǔn)氣體的裝置如圖6所示。740)this.width=740">將滲透管放在氣體發(fā)生瓶中,再將氣體發(fā)生瓶放入恒溫水浴中,恒溫水浴的溫度要與測(cè)定滲透率時(shí)的溫度相同(一般為25±1℃),這樣就可不作溫度校正。稀釋氣(壓縮空氣)經(jīng)硅膠、活性炭和氫氧化鈉凈化器2除去水分和雜質(zhì)后,再經(jīng)流量控制閥和流量計(jì)3進(jìn)入氣體發(fā)生瓶7(即混合器)中,將滲透出來的氣體分子帶出,就得到標(biāo)準(zhǔn)氣體。標(biāo)準(zhǔn)氣體的濃度可由下式求出(在25℃和一個(gè)大氣壓下)。740)this.width=740">式中:z:所配標(biāo)準(zhǔn)氣體的濃度(ppm);G:滲透管的滲透率(Lg/min);M:液體的摩爾質(zhì)量(g/mol);Q:稀釋氣體的流量(L/min);VM:配氣狀態(tài)下氣體的摩爾體積(L/mol)。</p><p style="text-indent:25px"> 隨著我國國民經(jīng)濟(jì)的快速發(fā)展，氣體產(chǎn)品應(yīng)用范圍不斷擴(kuò)大，用量不斷增加，新產(chǎn)品不斷推出，純度不斷提高，市場(chǎng)需求不斷擴(kuò)大，產(chǎn)值增長速度遠(yuǎn)遠(yuǎn)超過同期國民經(jīng)濟(jì)總值的增長速度，達(dá)到年12%的增長率。全國氣體產(chǎn)品市場(chǎng)年銷售額約為400億元。雖然氣體工業(yè)總產(chǎn)值在國民經(jīng)濟(jì)生產(chǎn)總值中所占的比例不算大，但它對(duì)當(dāng)前飛速發(fā)展的微電子、航空航天、生物工程、新型材料、精密冶金、環(huán)境科學(xué)等高新技術(shù)部門有重要影響，是這些部門不可缺少的原材料氣或工藝氣。正是由于各種新興工業(yè)部門和現(xiàn)代科學(xué)技術(shù)的需要和推動(dòng)，氣體工業(yè)產(chǎn)品才在品種，質(zhì)量和數(shù)量等方面取得令人矚目的飛躍發(fā)展。常州大成工業(yè)氣體有限公司為您提供氣體，有想法可以來我司咨詢！</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="泰州消防氣體批發(fā),氣體" src="https://tyunfile.71360.com/UploadFile/czdcafkj/637329346686757812/3254793.png"></div><p style="text-indent:25px"> 工業(yè)氣體在國家標(biāo)準(zhǔn)《常用危險(xiǎn)化學(xué)品的分類及標(biāo)志》(GB13690-1992)中，通常被劃為第2類壓縮氣體和液化氣體。這類化學(xué)品系指壓縮、液化或加壓溶解的氣體。氣體經(jīng)加壓或降低溫度，可以使氣體分子間的距離很大的縮小而被壓入鋼瓶中，這種氣體稱為壓縮氣體(亦稱為長久氣體，如氧氣、氮?dú)?、氬氣、氫氣?。對(duì)壓縮氣體繼續(xù)加壓，適當(dāng)降溫，壓縮氣體就會(huì)變成液體的，稱為液化氣體(如液氯、液氨、液體二氧化碳等)。此外，還有一種性質(zhì)極為不穩(wěn)定的氣體，加壓后需溶于溶劑中儲(chǔ)存在鋼瓶內(nèi)，這種氣體稱為溶解氣體(如溶解乙炔等)。常州大成工業(yè)氣體有限公司是一家專業(yè)提供氣體的公司，有想法可以來我司咨詢！泰州消防氣體批發(fā)</p><p style="text-indent:25px">常州大成工業(yè)氣體有限公司是一家專業(yè)提供氣體的公司，期待您的光臨！泰州消防氣體批發(fā)</p><p style="text-indent:25px"> 動(dòng)態(tài)配氣技術(shù)就是能連續(xù)不斷的配制和供給一定濃度的標(biāo)準(zhǔn)氣體。用動(dòng)態(tài)配氣技術(shù)配制標(biāo)準(zhǔn)氣體時(shí),首先需要一個(gè)能連續(xù)不斷供給原料氣的氣源,作為這種配氣方法的氣源有鋼瓶標(biāo)準(zhǔn)氣和滲透管等。滲透管動(dòng)態(tài)配氣法滲透管及滲透率的測(cè)定滲透管是動(dòng)態(tài)配氣法中的另一種氣源,其結(jié)構(gòu)見圖5。740)">在安培瓶1中裝入產(chǎn)生原料氣的液體(如汽油等),用不銹鋼加固環(huán)3將聚四氟乙烯塑料帽2和安培瓶1的頸部緊封牢固,塑料帽的上端是比較薄(壁厚在1毫米以下)的滲透面4。由于原料液體的揮發(fā)性,使安培瓶中有一定蒸氣壓,氣體分子在蒸氣壓力的作用下,通過滲透面向外滲透。單位時(shí)間的滲透量叫滲透率。在一定溫度下,滲透率的大小決定于滲透面的厚度和面積的大小等因素。滲透面越大,壁越薄,滲透率就越大。制作滲透管時(shí),就是通過改變滲透面積和厚度的辦法,以獲得不同滲透率的滲透管。任何滲透管在使用前都必須知道其滲透率。滲透率的測(cè)定方法是:在一干燥瓶的底部裝入粒狀氫氧化鈉,上面蓋一層尼龍紗網(wǎng),將滲透管放入干燥瓶中的紗網(wǎng)上。加蓋后,滲透出來的氣體(汽油蒸氣)就會(huì)被氫氧化鈉吸收。由于液體的蒸氣壓與溫度有關(guān),所以滲透率也隨溫度改變而改變。因此,在測(cè)定滲透率時(shí),必須將干燥瓶放入恒溫水浴中。泰州消防氣體批發(fā)</p><p style="text-indent:25px">常州大成工業(yè)氣體有限公司是一家常州大成工業(yè)氣體有限公司座落于常州市金壇經(jīng)濟(jì)開發(fā)區(qū)，交通十分便捷。 ??公司占地總面積6000平米，是一家從事各類氣體研發(fā)，生產(chǎn)，銷售的公司；主要產(chǎn)品有二氧化碳滅火器、IG541滅火器、七氟丙烷滅火器、氧氣、氮?dú)?、氬氣、二氧化碳、氦氣、乙炔、氫氣、工業(yè)氣體、電子氣體、標(biāo)誰氣體、醫(yī)療用氣、混合氣體、高純氣體等各種特種氣體產(chǎn)品?？蔀榛ず教臁㈦娮?、光纖、機(jī)械、石油、建材、電力、環(huán)保、食品、制藥、科研等領(lǐng)域提供產(chǎn)品和技術(shù)服務(wù)。 ??公司本著安全第一，服務(wù)至上的原則，以謙遜恭和的態(tài)度，與各廠家建立了良好的合作關(guān)系，我們希望通過我們的努力，與客戶創(chuàng)造更加道美好的未來。的公司，致力于發(fā)展為創(chuàng)新務(wù)實(shí)、誠實(shí)可信的企業(yè)。大成工業(yè)氣體深耕行業(yè)多年，始終以客戶的需求為向?qū)?，為客戶提?**的工業(yè)氣體，標(biāo)準(zhǔn)氣體，混合氣體，消防氣體。大成工業(yè)氣體致力于把技術(shù)上的創(chuàng)新展現(xiàn)成對(duì)用戶產(chǎn)品上的貼心，為用戶帶來良好體驗(yàn)。大成工業(yè)氣體始終關(guān)注自身，在風(fēng)云變化的時(shí)代，對(duì)自身的建設(shè)毫不懈怠，高度的專注與執(zhí)著使大成工業(yè)氣體在行業(yè)的從容而自信。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2866741.html</p></div></div></div></div></div><div id="afmykho" class="page-right twoColRt"><div id="onpcegd" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="y2xz7b4" class="recomPic likePro"><a 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