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onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="mqspb2x" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/zhsyyq/637382039928924218/9028914.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="fubiel3" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</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>湖南質(zhì)量濕度發(fā)生器售后保障,濕度發(fā)生器</p><p><span>***更新：</span>2020-12-10 03:19:27</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="gfceqxz" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">蘇州眾好實驗儀器科技有限公司</a></p><p><span>聯(lián)系人：</span>徐兵兵</p><p><span>郵箱: </span>xbbhdu@163.com</p><p><span>電話: </span>18268001581</p><p><span>傳真: </span>0512_</p><p><span>網(wǎng)址: </span>http://www.zonho-tech.com</p><p><span>手機(jī): </span>0512-68290889</p><p><span>地址: </span>中國（江蘇）自由貿(mào)易試驗區(qū)蘇州片區(qū)蘇州工業(yè)園區(qū)現(xiàn)代大道88號物流大廈1801-02室</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="3blczli" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="isuwt3j" class="box"><p><p> **（或霜點(diǎn)）溫度：指空氣在水汽含量和氣壓都不改變的條件下，冷卻到飽和時的溫度。形象地說，就是空氣中的水蒸氣變?yōu)槁吨闀r候的溫度叫**溫度。**溫度本是個溫度值，可為什么用它來表示濕度呢？這是因為，當(dāng)空氣中水汽已達(dá)到飽和時，氣溫與**溫度相同；當(dāng)水汽未達(dá)到飽和時，氣溫一定高于**溫度。所以**與氣溫的差值可以表示空氣中的水汽距離飽和的程度。 </p> <p> 改變已知濕度氣體（主要是指飽和濕氣）狀態(tài)的方法。我們知道，氣體的狀態(tài)由壓力、溫度和體積來確定，對于飽和濕氣，如果狀態(tài)條件不變，湖南質(zhì)量濕度發(fā)生器售后保障，那末水汽的含量是恒定的，反之，若狀態(tài)改變，水汽含量亦隨之改變。于是可以利用熱力學(xué) P ，湖南質(zhì)量濕度發(fā)生器售后保障，湖南質(zhì)量濕度發(fā)生器售后保障、 v 、 T關(guān)系配制出所要求的濕度的氣體，基于這一原理的方法有改變壓力的方法，即雙壓法；改變溫度的方法，即雙溫法；以及同時改變壓力和溫度的方法濕度發(fā)生器廠家哪里好。湖南質(zhì)量濕度發(fā)生器售后保障</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="湖南質(zhì)量濕度發(fā)生器售后保障,濕度發(fā)生器" src="https://tyunfile.71360.com/UploadFile/zhsyyq/637382039928924218/9028914.png"></div><p> 雙壓濕度發(fā)生器通常由如下六個部分組成 </p> <p> <br /> </p> <p> （ 1 ）氣源系統(tǒng) </p> <p> <br /> </p> <p> （ 2 ）載氣干燥系統(tǒng) </p> <p> <br /> </p> <p> （ 3 ）飽和器系統(tǒng) </p> <p> <br /> </p> <p> （ 4 ）試驗腔 </p> <p> <br /> </p> <p> （ 5 ）恒溫系統(tǒng) </p> <p> <br /> </p> <p> （ 6 ）溫度和壓力的測量與控制系統(tǒng) </p> <p> <br /> </p> <p> <br /> </p> <p> 雙溫法濕度發(fā)生器 </p> <p> <br /> </p> <p> 原理：ts 和 tc 分別為飽和器溫度和試驗腔溫度，通過氣泵使氣流在飽和器與試驗腔之間不斷循環(huán)，經(jīng)過一定時間之后，氣流中的水汽達(dá)到飽和狀態(tài)。 e w (T s ) 是在溫度 T s 下的飽和水汽壓力， e c 是在較高溫度 T c 下的飽和水汽壓力。假設(shè)氣體為理想氣體，并且飽和器總壓力 P s 等于試驗腔內(nèi)氣體的總壓力 P c ，那么，在溫度為 T c 的試驗腔內(nèi)氣體的相對濕度可以用如下式計算： </p> <p> U=(ew(Ts)/ew(Tc)) * 100 在 Ps 和 Pc 不一致時，特別是在氣流速度較高的情況下，就需要考慮進(jìn)行壓力修正，U=(ew(Ts)/ew(Tc)) * (Pc/Ps) * 100 基于兩個溫度原理設(shè)計的密閉式濕度發(fā)生器有多種不同的結(jié)構(gòu)形式。山西智能化濕度發(fā)生器設(shè)備制造小型化濕度發(fā)生器生產(chǎn)廠家。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="湖南質(zhì)量濕度發(fā)生器售后保障,濕度發(fā)生器" src="https://tyunfile.71360.com/UploadFile/zhsyyq/637382039483641015/5746535.png"></div><p> 在氣體混合物單位體積中所含的水蒸氣量稱為濕度.相對濕度是指在某個溫度下,濕度與完全飽和水蒸氣比較大濕度的比值,用百分?jǐn)?shù)(%)來表示。濕度是指1立方米的空氣呈水蒸氣狀態(tài)下的含水克數(shù).1立方米空氣所能吸收水蒸氣的比較大量叫作比較大濕度或飽和點(diǎn)，比較大濕度很大程度上取決于溫度。 </p> <p> <br /> </p> <p> 絕對濕度是指空氣中水蒸氣的密度,用1m3空氣中含有水蒸氣的重量(g)來表示.水蒸氣含量多,空氣的濕度高.空氣中的含水量有一定限度,達(dá)到比較大容量時,稱為飽和水蒸氣含量。 </p> <p> 濕度是指每立方米濕測量的濕度不大于29g。然而，我國氫氣(干氫氣與水蒸汽的混合物)中所含的水內(nèi)大型氫冷發(fā)電機(jī)的氫氣濕度普遍高于該標(biāo)蒸汽質(zhì)量。 </p><p> 滲透管的工作基礎(chǔ)就是依據(jù)膜滲透原理，水分子穿過管壁的滲透過程遵循 Fick 定律，q=-D*S * (dP/dB)式中， q: 滲透速率，D ：滲透系數(shù)S: 有效滲透面積，dP/dB: 膜兩側(cè)水汽的壓力梯度，其中 B 為膜的厚度。由上式可見滲透速率與膜的材料及其密度、厚度、有效滲透面積、材料的物理特性（如親水或憎水）以及膜兩側(cè)的水汽分壓差等有關(guān)。 </p> <p> <br /> </p> <p> 發(fā)生器輸出的標(biāo)準(zhǔn)氣的水分濃度按下式計算： </p> <p> <br /> </p> <p> C=(q*V) / (F*Mv) </p> <p> <br /> </p> <p> 式中： C ——標(biāo)準(zhǔn)汽的水分濃度，單位為 ppmv </p> <p> <br /> </p> <p> q ——標(biāo)定溫度對應(yīng)的滲透率，單位為μ g/min </p> <p> <br /> </p> <p> V ——水汽的摩爾體積，單位為 L/mol </p> <p> <br /> </p> <p> F ——干載氣流量，單位為 L/min </p> <p> <br /> </p> <p> Mv ——水的摩爾質(zhì)量，單位為 g/mol 便攜式濕度發(fā)生器生產(chǎn)廠家。便攜式濕度發(fā)生器性價比</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="湖南質(zhì)量濕度發(fā)生器售后保障,濕度發(fā)生器" src="https://tyunfile.71360.com/UploadFile/zhsyyq/637382039405642968/3174012.png"></div><p> 低霜點(diǎn)濕度發(fā)生器系統(tǒng)的簡介及規(guī)程或規(guī)范中的技術(shù)要求，如下展示： </p> <p> 低霜點(diǎn)標(biāo)準(zhǔn)濕度發(fā)生器是濕度校準(zhǔn)中必備的儀器之一，系統(tǒng)基于雙溫雙壓法的原理，選用高效的制冷恒溫槽，采用先進(jìn)的壓力和流量控制技術(shù)，可用于各種類型**儀的校準(zhǔn)，霜點(diǎn)溫度zui底可達(dá)-75℃。 </p> <p> 整套系統(tǒng)符合以下規(guī)程或規(guī)范中的技術(shù)要求： </p> <p> GJB/J5873-2007雙溫雙壓法標(biāo)準(zhǔn)濕度發(fā)生器校準(zhǔn)規(guī)范 </p> <p> JJF1272-2011阻容法**濕度計校準(zhǔn)規(guī)范 </p> <p> JJF（**）38-2014底霜點(diǎn)濕度發(fā)生器校準(zhǔn)規(guī)范上海小型化濕度發(fā)生器。湖南質(zhì)量濕度發(fā)生器售后保障</p><p style="text-indent:25px">新型濕度發(fā)生器廠家。湖南質(zhì)量濕度發(fā)生器售后保障</p><p> 載氣的干燥程度及其流量會直接影響輸出氣體的濕度量值。因此，載氣必須經(jīng)干燥系統(tǒng)充分干燥，同時要求氣源穩(wěn)定和對流量進(jìn)行準(zhǔn)確的測量。發(fā)生器的準(zhǔn)確度取決于所用的滲透管滲透率標(biāo)定的不確定度、氣源的穩(wěn)定性、載氣流量測定的準(zhǔn)確度，以及恒溫精度。 </p> <p> **發(fā)生器可控制相應(yīng)范圍內(nèi)氣體流量中水蒸氣含量比例，在**溫度-70℃-20℃或者20℃-60℃ 范圍內(nèi)連續(xù)可調(diào)，氣體流量在選定范圍內(nèi)控制，同時可以滿足選定氣體流量范圍內(nèi)的濕度的變化。湖南質(zhì)量濕度發(fā)生器售后保障</p><p style="text-indent:25px">蘇州眾好實驗儀器科技有限公司主要經(jīng)營范圍是儀器儀表，擁有一支專業(yè)技術(shù)團(tuán)隊和良好的市場口碑。公司業(yè)務(wù)涵蓋濕度發(fā)生器，水蒸氣發(fā)生器，VOC發(fā)生器，固定床催化劑評價系統(tǒng)等，價格合理，品質(zhì)有保證。公司將不斷增強(qiáng)企業(yè)重點(diǎn)競爭力，努力學(xué)習(xí)行業(yè)知識，遵守行業(yè)規(guī)范，植根于儀器儀表行業(yè)的發(fā)展。蘇州眾好科技憑借創(chuàng)新的產(chǎn)品、專業(yè)的服務(wù)、眾多的成功案例積累起來的聲譽(yù)和口碑，讓企業(yè)發(fā)展再上新高。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2339552.html</p></div></div></div></div></div><div id="azbt3nu" class="page-right twoColRt"><div id="ztfragn" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="8nhdfwn" class="recomPic likePro"><a 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