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onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="oskrlz8" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/cdwckj/637110575874042969/6019570.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="839icdp" 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>四川省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>內(nèi)江熱電阻廠家,熱電阻</p><p><span>***更新：</span>2020-12-05 04:05:20</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="k29vk8p" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">成都皖川科技有限公司</a></p><p><span>聯(lián)系人：</span>朱成生</p><p><span>郵箱: </span>cdwckjgs@sina.com</p><p><span>電話: </span>18755046999</p><p><span>傳真: </span>028_87463776</p><p><span>網(wǎng)址: </span></p><p><span>手機(jī): </span>028-87463776</p><p><span>地址: </span>四川省成都市青羊區(qū)青羊萬(wàn)達(dá)廣場(chǎng)SOHO公寓2-2-1138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="39a34gi" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="nmebo2t" class="box"><p><p> 石油化工熱電阻 </p> <p> 1、應(yīng)用 </p> <p> 專業(yè)針對(duì)石油化工部門設(shè)計(jì)，可以直接測(cè)量－200℃－1600℃范圍內(nèi)液體、蒸汽和氣體介質(zhì)以及固體表面測(cè)溫。 </p> <p> 2、工作原理 </p> <p> 熱電偶的電極由兩根不同導(dǎo)體材質(zhì)組成。當(dāng)測(cè)量端與參比端存在溫差時(shí)，就會(huì)產(chǎn)生熱電勢(shì)，工作儀表便顯示出熱電勢(shì)所對(duì)應(yīng)的溫度值。 </p> <p> 熱電阻是利用電阻與溫度呈一定函數(shù)的關(guān)系原理，內(nèi)江熱電阻廠家，內(nèi)江熱電阻廠家。當(dāng)被測(cè)介質(zhì)中有溫度變化時(shí)，內(nèi)江熱電阻廠家，其電阻值也隨著發(fā)生變化，工作儀表便顯示出電阻值所對(duì)應(yīng)的溫度值。 </p> <p> 3、主要技術(shù)參數(shù) </p> <p> 產(chǎn)品執(zhí)行標(biāo)準(zhǔn): </p> <p> IEC1515 </p> <p> IEC584 </p> <p> IEC751 </p> <p> JB/T5518－91 </p> <p> JB/T5582－91 </p> <p> <br /> </p> <p> 4、公稱壓力 </p> <p> 一般是指在常溫下，保護(hù)管所能承受的靜態(tài)外壓而不破裂。允許工作壓力不僅與保護(hù)管材料、直徑、壁厚有關(guān)，且與其結(jié)構(gòu)形式、安裝方法及被測(cè)介質(zhì)的流速、種類有關(guān)。 </p> <p> 5、溫度范圍及允差內(nèi)江熱電阻廠家</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="內(nèi)江熱電阻廠家,熱電阻" src="http://tyunfile.71360.com/UploadFile/cdwckj/637110575874042969/6019570.jpg"></div><p> 扁防爆熱電阻的防爆熱電阻系統(tǒng)組成 </p> <p> (1)熱電阻測(cè)溫系統(tǒng)一般由熱電阻、連接導(dǎo)線和顯示儀表等組成。必須注意以下兩點(diǎn)： </p> <p> ①熱電阻和顯示儀表的分度號(hào)必須一致 </p> <p> ②為了消除連接導(dǎo)線電阻變化的影響，必須采用三線制接法。具體內(nèi)容參見(jiàn)本篇第三章。 </p> <p> (2)鎧裝熱電阻鎧裝熱電阻是由感溫元件(電阻體)、引線、絕緣材料、不銹鋼套管組合而成的堅(jiān)實(shí)體，它的外徑一般為φ1~φ8mm，小可達(dá)φmm。與普通型熱電阻相比，它有下列優(yōu)點(diǎn)： </p> <p> ①體積小，內(nèi)部無(wú)空氣隙，熱慣性上，測(cè)量滯后??； </p> <p> ②機(jī)械性能好、耐振，抗沖擊； </p> <p> ③能彎曲，便于安裝 </p> <p> ④使用壽命長(zhǎng)。 </p> <p> (3)端面熱電阻端面熱電阻感溫元件由特殊處理的電阻絲材繞制，緊貼在溫度計(jì)端面。它與一般軸向熱電阻相比，能更正確和快速地反映被測(cè)端面的實(shí)際溫度，適用于測(cè)量軸瓦和其他機(jī)件的端面溫度。 </p> <p> (4)隔爆型熱電阻隔爆型熱電阻通過(guò)特殊結(jié)構(gòu)的接線盒，把其外殼內(nèi)部性混合氣體因受到火花或電弧等影電阻體的斷路修理必然要改變電阻絲的長(zhǎng)短而影響電阻值，為此更換新的電阻體為好，若采用焊接修理，焊后要校驗(yàn)合格后才能使用。眉山熱電阻批發(fā)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="內(nèi)江熱電阻廠家,熱電阻" src="http://tyunfile.71360.com/UploadFile/cdwckj/637110575868242187/6750741.jpg"></div><p> 扁防爆熱電阻 </p> <p> 防爆熱電阻利用間隙隔爆原理，設(shè)計(jì)具有足夠強(qiáng)度的接線盒等部件，將所有會(huì)產(chǎn)生火花、電弧和危險(xiǎn)溫度的零部件都密封在接線盒腔內(nèi)，當(dāng)腔內(nèi)發(fā)生時(shí)，能通過(guò)接合面間隙熄火和冷卻，使后的火焰和溫度傳不到腔外，從而進(jìn)行測(cè)溫。 </p> <p> 防爆熱電阻系統(tǒng)組成 </p> <p> （1）熱電阻測(cè)溫系統(tǒng)一般由熱電阻、連接導(dǎo)線和顯示儀表等組成。必須注意以下兩點(diǎn)： </p> <p> ①熱電阻和顯示儀表的分度號(hào)必須一致 </p> <p> ②為了消除連接導(dǎo)線電阻變化的影響，必須采用三線制接法。具體內(nèi)容參見(jiàn)本篇第三章。 </p> <p> （2）鎧裝熱電阻鎧裝熱電阻是由感溫元件（電阻體）、引線、絕緣材料、不銹鋼套管組合而成的堅(jiān)實(shí)體，它的外徑一般為φ1~φ8mm，小可達(dá)φmm。 </p><p> 鎧裝熱電阻是由感溫元件（電阻體）、引線、絕緣材料、不銹鋼套管組合而成的堅(jiān)實(shí)體，它的外徑一般為φ2--φ8mm，***小可達(dá)φmm。與普通型熱電阻相比，它有下列優(yōu)點(diǎn)： </p> <p> 1、體積小，內(nèi)部無(wú)空氣隙，熱慣性上，測(cè)量滯后??； </p> <p> 2、機(jī)械性能好、耐振，抗沖擊； </p> <p> 3、能彎曲，便于安裝； </p> <p> 4、使用壽命長(zhǎng)。 </p> <p> 端面熱電阻 </p> <p> 端面熱電阻感溫元件由特殊處理的電阻絲材繞制，緊貼在溫度計(jì)端面。它與一般軸向熱電阻相比，能更正確和快速地反映被測(cè)端面的實(shí)際溫度，適用于測(cè)量軸瓦和其他機(jī)件的端面溫度。 </p> <p> 隔爆型熱電阻 </p> <p> 隔爆型熱電阻通過(guò)特殊結(jié)構(gòu)的接線盒，把其外殼內(nèi)部性混合氣體因受到火花或電弧等影響而發(fā)生的局限在接線盒內(nèi)，生產(chǎn)現(xiàn)場(chǎng)不會(huì)引超。隔爆型熱電阻可用于Bla--B3c級(jí)區(qū)內(nèi)具有危險(xiǎn)場(chǎng)所的溫度測(cè)量。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="內(nèi)江熱電阻廠家,熱電阻" src="http://tyunfile.71360.com/UploadFile/cdwckj/637110575874951172/466828.jpg"></div><p> 雙支鎧裝熱電阻的接線方式： </p> <p> 四線制：在熱電阻的根部?jī)啥烁鬟B接兩根導(dǎo)線的方式稱為四線制，其中兩根引線為熱電阻提供恒定電流I，把R轉(zhuǎn)換成電壓信號(hào)U，再通過(guò)另兩根引線把U引至二次儀表?？梢?jiàn)這種引線方式可完全消除引線的電阻影響，主要用于高精度的溫度檢測(cè)。 </p> <p> 熱電阻采用三線制接法。采用三線制是為了消除連接導(dǎo)線電阻引起的測(cè)量誤差。這是因?yàn)闇y(cè)量熱電阻的電路一般是不平衡電橋。熱電阻作為電橋的一個(gè)橋臂電阻，其連接導(dǎo)線（從熱電阻到中控室）也成為橋臂電阻的一部分，這一部分電阻是未知的且隨環(huán)境溫度變化，造成測(cè)量誤差。采用三線制，將導(dǎo)線一根接到電橋的電源端，其余兩根分別接到熱電阻所在的橋臂及與其相鄰的橋臂上，這樣消除了導(dǎo)線線路電阻帶來(lái)的測(cè)量誤差。內(nèi)江熱電阻批發(fā)</p><p style="text-indent:25px">內(nèi)江熱電阻廠家</p><p> 鎧裝抽芯式裝配式熱電阻 </p> <p> 1、應(yīng)用 </p> <p> 通常和顯示儀表、記錄儀表、電子計(jì)算等配套使用。直接測(cè)量各種生產(chǎn)過(guò)程中的-200°C~500°C范圍內(nèi)液體、蒸汽和氣體介質(zhì)以及固體表面溫度。 </p> <p> <br /> </p> <p> 2、特點(diǎn) </p> <p> ·壓簧式感溫元件，抗振性能好； </p> <p> ·毋須補(bǔ)償導(dǎo)線，節(jié)省費(fèi)用； </p> <p> ·測(cè)溫精度高； </p> <p> ·機(jī)械強(qiáng)度高，耐壓性能好； </p> <p> ·進(jìn)口薄膜電阻元件，性能可靠穩(wěn)定。 </p> <p> <br /> </p> <p> 3、工作原理 </p> <p> 熱電阻是利用物質(zhì)在溫度變化時(shí)，其電阻也隨著發(fā)生變化的特征來(lái)測(cè)量溫度的。當(dāng)阻值變化時(shí)，工作儀表便顯示出阻值所對(duì)應(yīng)的溫度值。 </p> <p> <br /> </p> <p> 4、主要技術(shù)參數(shù) </p> <p> 產(chǎn)品執(zhí)行標(biāo)準(zhǔn) </p> <p> IEC751 </p> <p> JB/T18622-1997 </p> <p> JB/T8623-1997 </p> <p> <br /> </p> <p> 5、常溫絕緣電阻 </p> <p> 熱電阻在環(huán)境溫度為15—35°C，相對(duì)濕度不大于80%，試驗(yàn)電壓為10—100V（直流）電極與外套管之間的絕緣電阻>100MΩ。內(nèi)江熱電阻廠家</p><p style="text-indent:25px">成都皖川科技有限公司致力于儀器儀表，是一家貿(mào)易型公司。公司自成立以來(lái)，以質(zhì)量為發(fā)展，讓匠心彌散在每個(gè)細(xì)節(jié)，公司旗下耐磨熱電偶，氣體檢測(cè)儀器，便攜式氣體報(bào)警控制器，雙金屬溫度計(jì)深受客戶的喜愛(ài)。公司將不斷增強(qiáng)企業(yè)重點(diǎn)競(jìng)爭(zhēng)力，努力學(xué)習(xí)行業(yè)知識(shí)，遵守行業(yè)規(guī)范，植根于儀器儀表行業(yè)的發(fā)展。成都皖川科技立足于全國(guó)市場(chǎng)，依托強(qiáng)大的研發(fā)實(shí)力，融合前沿的技術(shù)理念，飛快響應(yīng)客戶的變化需求。</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/2271008.html</p></div></div></div></div></div><div id="84txtxj" class="page-right twoColRt"><div id="xhegnzw" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="hwyvm3e" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" alt="福建ZF配件哪家強(qiáng) 信息推薦自業(yè)物資供應(yīng)" class="vcenter" 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