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src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637329352318056640/3713289.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="3t2jlvh" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637329352318056640/3713289.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="mgtq229" 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>陜西省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>遼寧氣動系統(tǒng)溫度變送器**,溫度變送器</p><p><span>***更新：</span>2021-02-02 00:20:49</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="rf8mos3" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">西安倫騫電器設(shè)備有限責(zé)任公司</a></p><p><span>聯(lián)系人：</span>付海飛</p><p><span>郵箱: </span>xalunqian@163.com</p><p><span>電話: </span>13891837328</p><p><span>傳真: </span>138_</p><p><span>網(wǎng)址: </span>http://xalunqian.shop.88360.com</p><p><span>手機(jī): </span>138-91837328</p><p><span>地址: </span>高新區(qū)發(fā)展大道25號軍民融合創(chuàng)新港</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="azgip89" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="m2ria9m" class="box"><p><p> 溫度變送器正確的接地方法，用戶在應(yīng)用過程中總會出現(xiàn)諸多因素，正確的使用儀器可以在后期的使用的過程中減少許多不必要的麻煩。下面給大家詳細(xì)的介紹一下溫度變送器接地的**技巧。 </p> <p> 1，控制系統(tǒng)AC電源應(yīng)該來自于一個分開的系統(tǒng)，與其他設(shè)備和使用分開; </p> <p> 2，電源在設(shè)計時應(yīng)該考慮到初始電流的沖擊，至少能承受10個周期; </p> <p> 3，控制系統(tǒng)AC接地應(yīng)該建立在隔離變壓器或UPS上，或者在附近溫度變送器; </p> <p> 4，控制系統(tǒng)工作站AC電源應(yīng)該使用專門的插座; </p> <p> 5，當(dāng)連接現(xiàn)場設(shè)備電源幾個I/O接口轉(zhuǎn)接器時，應(yīng)該使用隔離柵條; </p> <p> 6，控制系統(tǒng)AC電源應(yīng)該由隔離變壓器或UPS供給; </p> <p> 7，當(dāng)AC和DC輸入連接到同樣的接線排，接線排必以適當(dāng)?shù)木鏄?biāo)簽標(biāo)出; </p> <p> 8，AC接地線應(yīng)該與載流線型號相當(dāng)或大一號; </p> <p> 9，預(yù)留一根額外的線或使用一終端盒，以提供測試點(diǎn)，遼寧氣動系統(tǒng)溫度變送器**，遼寧氣動系統(tǒng)溫度變送器**。 </p> <p> 10，接地系統(tǒng)的電阻必須進(jìn)行測試，以保證接地能滿足控制系統(tǒng)制造商的要求，遼寧氣動系統(tǒng)溫度變送器**。其實以上小技巧的也比較使用于平衡流量計。 </p> <p> 以上就是溫度變送器接地的**技巧，希望對大家能有所幫助。一體化溫度變送器一般由測溫探頭(熱電偶或熱電阻傳感器)和兩線制固體電子單元組成。遼寧氣動系統(tǒng)溫度變送器**</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="遼寧氣動系統(tǒng)溫度變送器**,溫度變送器" src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637329352318056640/3713289.png"></div><p> 溫度變送器是一種常見的儀器，溫度變送器的應(yīng)用范圍是十分廣的，在各個領(lǐng)域都有應(yīng)用溫度變送器，溫度變送器的工作原理是什么呢?熱電偶一般用于中高溫的測量，而熱電阻主要是低溫的測量。溫度變送器中選擇熱電偶和熱電阻的工作原理的區(qū)別是什么呢，下面為大家具體介紹一下吧。 </p> <p> 熱電偶熱電偶是工業(yè)上常用的溫度檢測元件之一，熱電偶工作原理是基于賽貝克(seeback)效應(yīng),即兩種不同成分的導(dǎo)體兩端連接成回路，如兩連接端溫度不同，則在回路內(nèi)產(chǎn)生熱電流的物理現(xiàn)象。其優(yōu)點(diǎn)是：①測量精度高。因熱電偶直接與被測對象接觸，不受中間介質(zhì)的影響。②測量范圍廣。常用的熱電偶從-50~+1600℃均可邊續(xù)測量，某些特殊熱電偶*低可測到-269℃(如金鐵鎳鉻)，zui高可達(dá)+2800℃(如鎢-錸)。③構(gòu)造簡單，使用方便。熱電偶通常是由兩種不同的金屬絲組成，而且不受大小和開頭的限制，外有保護(hù)套管，用起來非常方便。甘肅卡箍式溫度變送器介紹影響溫度變送器安全功用的主要因家有失效形式和自確診。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="遼寧氣動系統(tǒng)溫度變送器**,溫度變送器" src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637329347108144531/6107652.png"></div><p> 熱電偶冷端的溫度補(bǔ)償: </p> <p> 由于熱電偶的材料一般都比較貴重(特別是采用貴金屬時)，而測溫點(diǎn)到儀表的距離都很遠(yuǎn)，為了節(jié)省熱電偶材料，降低成本，通常采用補(bǔ)償導(dǎo)線把熱電偶的冷端(自由端)延伸到溫度比較穩(wěn)定的控制室內(nèi)，連接到儀表端子上。必須指出，熱電偶補(bǔ)償導(dǎo)線的作用只起延伸熱電極，使熱電偶的冷端移動到控制室的儀表端子上，它本身并不能消除冷端溫度變化對測溫的影響，不起補(bǔ)償作用。因此，還需采用其他修正方法來補(bǔ)償冷端溫度t0≠0℃時對測溫的影響。 </p> <p> 在使用熱電偶補(bǔ)償導(dǎo)線時必須注意型號相配，極性不能接錯，補(bǔ)償導(dǎo)線與熱電偶連接端的溫度不能超過100℃。 </p><p> 近年來，我國工業(yè)現(xiàn)代化的進(jìn)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(bǔ)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(fèi)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(dāng)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(xué)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。帶傳感器的變送器通常由兩部分組成:傳感器和信號轉(zhuǎn)換器。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="遼寧氣動系統(tǒng)溫度變送器**,溫度變送器" src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637329346917041015/5760514.png"></div><p> 溫度變送器的熱惰性： </p> <p> 溫度變送器是一種使用熱電阻等元器件將溫度信號轉(zhuǎn)化為電信號的儀器儀表。溫度變送器的研發(fā)過程是復(fù)雜和嚴(yán)苛的，很多因素都影響著終溫度變送器的測量。熱惰性就是其中一個重要因素。熱惰性是指在一定時間對某材料加一定量的熱，材料表面的溫度改變快慢的性質(zhì)。溫度變送器的熱惰性其實就是溫度變送器里，熱電阻或者熱電偶的熱惰性。由于熱電阻或者熱電偶的熱惰性使儀表的指示值落后于被測介質(zhì)溫度的變化，在進(jìn)行快速測量時這種影響尤為突出。解決這一現(xiàn)象通常的做法是采用導(dǎo)熱機(jī)能好的材料，管壁薄、內(nèi)徑小的溫度探針和保護(hù)套管。溫度變送器熱惰性引起的誤差在測量中有很大的影響，尤其是在精密測量的時候一定要注意，我們要盡量避免溫度變送器熱惰性引起的誤差，或者采取適當(dāng)?shù)难a(bǔ)償來消弱這種誤差。溫度變送器的供電電源不得有尖峰，否則容易損壞變送器。遼寧氣動系統(tǒng)溫度變送器**</p><p style="text-indent:25px">防風(fēng)雨型溫度變送器常裝置的地方是在一些對變送器功能有嚴(yán)格請求的運(yùn)用場合，比如分化爐、五級預(yù)熱器等。遼寧氣動系統(tǒng)溫度變送器**</p><p> 溫度傳感器元件的正常工作是要滿足其工作條件的，其中之一就是它的工作電流，由于溫度傳感器具有電阻值，當(dāng)電流流過溫度傳感器元件時，會有功率損耗，就會發(fā)熱，所以為了減小傳感器本身的發(fā)熱引起測溫誤差，所以要在滿足傳感器正常工作的條件下，盡量減少其本身的發(fā)熱。這就是為什么溫度傳感器要在恒定小電流條件下使用的原因。所以比如鉑熱電阻的常規(guī)工作電流是5MA，但我們推薦的工作電流是1MA。原因就是要減少溫度傳感器元件的自熱引起測量誤差。電流恒定，其輸出才會有溫度和電勢的線性關(guān)系。 </p> <p> 溫度傳感器的插入深度也是容易忽視的一個問題，有些客戶要求插入深度很短但是直徑比較大，這是不合理的，尤其是在高溫的情況下這是不可取的，理論上說溫度傳感器的插入深度一般可按實際需要決定。但*少插入深度不應(yīng)少于溫度傳感器保護(hù)套管直徑的8-10倍。這樣才能保證溫度傳感器性能穩(wěn)定。了解了溫度傳感器的工作電流和插入深度對我們選定和使用溫度傳感器是很有必要的。如果忽視這兩個細(xì)節(jié)問題很容易造成溫度傳感器性能不穩(wěn)定甚至損壞。遼寧氣動系統(tǒng)溫度變送器**</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3113755.html</p></div></div></div></div></div><div id="uoqcedf" class="page-right twoColRt"><div id="82e7yvx" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="gqi3o23" 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" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強(qiáng) 信息推薦自業(yè)物資供應(yīng)</p></a></div><div id="auwt7p8" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/846569.html"><div><img 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