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id="88npmtv" class="page-proshow02"><p class="title">詳細說明</p><div id="wv32cum" class="box"><p><p> 溫度變送器的主要用途： </p> <p> 人類對溫度變送器的開發(fā)較早，應用上也較為廣。從17世紀初人們開始利用溫度進行測量。在半導體技術(shù)的支持下，相繼開發(fā)了半導體熱電偶變送器、熱電阻溫度變送器、PN結(jié)溫度變送器和集成溫度變送器。 </p> <p> 溫度是表征物體冷熱程度的物理量，是工農(nóng)業(yè)生產(chǎn)過程中一個很重要而普遍的測量參數(shù)。溫度的測量及控制對保證產(chǎn)品質(zhì)量、提高生產(chǎn)效率，甘肅供水管網(wǎng)溫度變送器介紹、節(jié)約能源，甘肅供水管網(wǎng)溫度變送器介紹、生產(chǎn)安全、促進國民經(jīng)濟的發(fā)展起到非常重要的作用。由于溫度測量的普遍性，甘肅供水管網(wǎng)溫度變送器介紹，溫度變送器的數(shù)量在各種變送器中居前列。 </p> <p> <br /> 一體化溫度變送器的輸出為統(tǒng)一的4~20mA信號;可與微機系統(tǒng)或其它常規(guī)儀表匹配使用。甘肅供水管網(wǎng)溫度變送器介紹</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="甘肅供水管網(wǎng)溫度變送器介紹,溫度變送器" src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637329347283603515/2948782.png"></div><p> 溫度變送器選型: </p> <p> 首先，根據(jù)溫度測量范圍，選擇相應的熱電阻溫度變送器、熱電偶溫度變送器或者熱敏電阻溫度變送器。其次，對于連接方式的選擇。一般情況可選用螺紋連接方式，對下列場合應選用法蘭連接方式：在設(shè)備、襯里管道和有色金屬管道上安裝；結(jié)晶、結(jié)疤、堵塞和強腐蝕性介質(zhì)：易燃、易爆和劇毒介質(zhì)。第三，依據(jù)使用環(huán)境的不同，需要按下面的原則為溫度變送器選用接線盒。條件較好的場所：可選擇普通溫度變送器接線盒即可。潮濕或露天場所：需要有防水效果的防濺、防水溫度變送器接線盒。易燃、易爆場所：從工況環(huán)境安全性的考慮，必須選用防爆式溫度變送器接線盒。第四，對于溫度變送器探針長度的選擇。溫度變送器插入探針長度應選擇以檢測元件插至被測介質(zhì)溫度變化靈敏具有dai biao性的位置為原則。溫度變送器的探針材質(zhì)硬不低于設(shè)備或管道材質(zhì)。必要時可謂溫度變送器加保護套管。 </p> <p> 隨著技術(shù)的提升，溫度變送器的應用場合也越來越多，像是石油、化工、化纖；紡織、橡膠、建材；電力、冶金、醫(yī)藥；食品等工業(yè)領(lǐng)域現(xiàn)場測溫過程控制；計算機測控系統(tǒng)等都離不開對溫度的監(jiān)控。溫度變送器也可與其它儀表進行配套使用。西安供水管網(wǎng)溫度變送器價格溫度變送器可按用戶實際需要調(diào)整變送器的顯現(xiàn)方向，并顯現(xiàn)變送器所測的介質(zhì)溫度、輸出電流和百分份額。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="甘肅供水管網(wǎng)溫度變送器介紹,溫度變送器" src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637329346560810546/6182439.png"></div><p> 近年來，我國工業(yè)現(xiàn)代化的進程和電子信息產(chǎn)業(yè)連續(xù)的高速增長，帶動了變送器市場的快速上升。溫度變送器用途十分廣闊，可用作溫度測量與控制、溫度補償、紫外光和紅外光測量、電腦彩色顯示器、切換式電源、熱水器、電冰箱、廚房設(shè)備、空調(diào)、汽車等領(lǐng)域。近年來汽車電子、消費電子行業(yè)的快速增長帶動了我國溫度變送器需求的快速增長。由于工農(nóng)業(yè)生產(chǎn)中溫度測量的范圍極寬，從零下幾百度到零上幾千度，而各種材料做成的溫度變送器只能在一定的溫度范圍內(nèi)使用。溫度變送器是通過物體隨溫度變化而改變某種特性來間接測量的。不少材料、元件的特性都隨溫度的變化而變化，所以能作溫度變送器的材料相當多。溫度變送器隨溫度而引起物理參數(shù)變化的有：膨脹、電阻、電容、而電動勢、磁性能、頻率、光學特性及熱噪聲等等。隨著生產(chǎn)的發(fā)展，新型溫度變送器還會不斷涌現(xiàn)。溫度變送器的用途也將越來越廣。 </p><p> 熱電阻溫度變送器：熱電阻溫度變送器是現(xiàn)代工業(yè)現(xiàn)場、科研院所溫度測控的儀器儀表。熱電阻溫度變送器也是集散系統(tǒng)、數(shù)字總線系統(tǒng)的必備產(chǎn)品。像是在電廠的測溫系統(tǒng)中，有很大一部分設(shè)計時采用熱電阻溫度變送器，熱電阻溫度變送器將溫度信號轉(zhuǎn)換成4～20mA的直流電流信號后，再送到二次儀表或其它數(shù)據(jù)采集系統(tǒng)進行溫度數(shù)據(jù)顯示。熱電阻溫度變送器具有結(jié)構(gòu)簡單、輸出信號大、抗干擾能力強、線性好、顯示儀表方便、有反接保護和限流保護等優(yōu)點。熱電阻溫度變送器中的熱電阻是中低溫區(qū)常用的一種測溫元件。熱電阻利用物質(zhì)在溫度變化時，本身電阻也隨著發(fā)生變化的特性，來測量溫度的。當被測介質(zhì)中有溫度梯度存在時，所測得的溫度感溫元件所在范圍內(nèi)介質(zhì)層中的平均溫度。它的特點是測量精度高、性能穩(wěn)定。其中鉑熱電阻的測量準確度較高。溫度變送器的放大單元的作用是將量程單元輸出的毫伏信號進行電壓和功率放大，輸出統(tǒng)一的直流電流信號或直流電壓信號。終，溫度變送器將溫度信號轉(zhuǎn)換成為統(tǒng)一標準信號，提供給指示、記錄儀或調(diào)節(jié)器等，以實現(xiàn)對溫度參數(shù)的顯示、記錄或自動控制。溫度變送器能對現(xiàn)場的環(huán)境因素完成遠程監(jiān)測，對工業(yè)現(xiàn)場數(shù)字信息進行實時收集和監(jiān)控，突顯便利性與實時性。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="甘肅供水管網(wǎng)溫度變送器介紹,溫度變送器" src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637329347445859375/5427354.png"></div><p> 熱電偶的種類及結(jié)構(gòu)形成: </p> <p> (1)熱電偶的種類; </p> <p> 常用熱電偶可分為標準熱電偶和非標準熱電偶兩大類。所調(diào)用標準熱電偶是指國家標準規(guī)定了其熱電勢與溫度的關(guān)系、允許誤差、并有統(tǒng)一的標準分度表的熱電偶，它有與其配套的顯示儀表可供選用。非標準化熱電偶在使用范圍或數(shù)量級上均不及標準化熱電偶，一般也沒有統(tǒng)一的分度表，主要用于某些特殊場合的測量。 </p> <p> 標準化熱電偶我國從1988年1月1日起，熱電偶和熱電阻全部按IEC國際標準生產(chǎn)，并指定S、B、E、K、R、J、T七種標準化熱電偶為我國統(tǒng)一設(shè)計型熱電偶。 </p> <p> (2)熱電偶的結(jié)構(gòu)形式為了保證熱電偶可靠、穩(wěn)定地工作，對它的結(jié)構(gòu)要求如下： </p> <p> ①組成熱電偶的兩個熱電極的焊接必須牢固; </p> <p> ②兩個熱電極彼此之間應很好地絕緣，以防短路; </p> <p> ③補償導線與熱電偶自由端的連接要方便可靠; </p> <p> ④保護套管應能保證熱電極與有害介質(zhì)充分隔離。測得溫度與通訊模塊的實際輸出共同，變送器測溫過程中沒有失效發(fā)生，側(cè)沮功用得到履行。西安供水管網(wǎng)溫度變送器價格</p><p style="text-indent:25px">溫度電流變送器是把溫度傳感器的信號轉(zhuǎn)變?yōu)殡娏餍盘?，連接到二次儀表上，從而顯示出對應的溫度。甘肅供水管網(wǎng)溫度變送器介紹</p><p> 卡箍式溫度變送器采用熱電偶、熱電阻作為測溫元件，從測溫元件輸出信號送到變送器模塊，經(jīng)過穩(wěn)壓濾波、運算放大、非線性校正、V/I轉(zhuǎn)換、恒流及反向保護等電路處理后，轉(zhuǎn)換成與溫度成線性關(guān)系的4～20mA電流信號0-5V/0-10V電壓信號，Hart協(xié)議。 </p> <p> 卡箍式管接頭由兩塊半圓卡箍組成，允許相鄰管端伸縮和角變位的裝置。在卡箍內(nèi)放置套環(huán)狀密封圈用螺栓擰緊卡箍擠壓密封圈密封，有卡箍式環(huán)型管接頭，管端處有環(huán)肋；卡箍式槽型管接頭，管端處有凹槽；卡箍式肩型管道頭，管端頭有凸肩等類型。溝槽式管接頭在管材，管件平口端的接頭部位加工成環(huán)行溝槽后，用拼合式卡箍件，C型橡膠密封圈和緊固件組成的快速拼裝接頭。 </p> <p> <p> 卡箍式連接和溝槽連接到底有什么區(qū)別？ </p> <p> 卡箍式連接和溝槽連接是一種連接的兩種說法。你可以理解為單車和自行車的區(qū)別。連接件是卡箍形式（卡箍件），鋼管開溝槽。溝槽內(nèi)放入膠圈，用卡箍件連上就好了。溝槽偏重于外形方面，卡箍偏重于作用原理方面。 </p> 甘肅供水管網(wǎng)溫度變送器介紹</p></p><br /><p>文章來源地址: http://m.cdcfah.com/cp/2973319.html</p></div></div></div></div></div><div id="ujgnpbn" class="page-right twoColRt"><div id="bqif888" class="box01 margin10 clearfix"><h3><a href="http://m.cdcfah.com/cp/">猜你喜歡</a></h3><div id="uogikry" class="recomPic likePro"><a href="http://m.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配件哪家強信息推薦自業(yè)物資供應" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強信息推薦自業(yè)物資供應</p></a></div><div id="ky7ward" class="recomPic 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