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id="eiaho2g" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="7wtv2ro" class="box"><p><p> 防爆型壓力變送器介紹： </p> <p> 防爆型壓力變送器是通過被測(cè)的氣體或者液體的施壓，使得防爆壓力變送器的電阻值發(fā)生變化（電阻效應(yīng)），將測(cè)量的相對(duì)應(yīng)的信號(hào)轉(zhuǎn)化成相對(duì)應(yīng)的4~20mA輸出信號(hào)或者帶HART協(xié)議的數(shù)字信號(hào)以進(jìn)行通訊。防爆型壓力變送器安全防爆，可廣泛應(yīng)用于石化、電力、冶金、制藥、食品加工等行業(yè)。 </p> <p> 防爆型壓力變送器應(yīng)用的性危險(xiǎn)場(chǎng)所可分為0區(qū)、1區(qū)和2區(qū)。所謂0區(qū)是指在正常情況下，性氣體混合物連續(xù)的或長(zhǎng)時(shí)間地存在的場(chǎng)所；1區(qū)是指在正常情況下，性氣體混合物有可能出現(xiàn)的場(chǎng)所，2區(qū)指的是在正常情況下，性氣體不可能出現(xiàn)或即使出現(xiàn)也只是短暫時(shí)間存在的場(chǎng)所。對(duì)于防爆型壓力變送器來說，對(duì)0區(qū)的防爆要求是為嚴(yán)格的。壓力變送器可以是本安型、隔爆型，需要注意的是，不管什么形式的防爆型壓力變送器，均需要有國(guó)家防爆檢測(cè)部門的核實(shí)、取得相關(guān)防爆證書方可使用。 </p> <p> 防爆型壓力變送器中本安型需要配合安全柵才能在有性混合物的危險(xiǎn)場(chǎng)所使用。安全柵是靠控制能量來達(dá)到防爆規(guī)定的。本質(zhì)安全型防爆壓力變送器為了安全起見，應(yīng)區(qū)別本質(zhì)安全回路及非本質(zhì)安全回路，高溫型壓力變送器推薦，把本質(zhì)安全回路的接線與其它的電氣回路的接線分開走線，高溫型壓力變送器推薦。常規(guī)的壓力變送器輸出信號(hào)有4～20mA電流輸出，高溫型壓力變送器推薦、0～10VDC、0.5～2.5VDC等電壓輸出和RS485數(shù)字輸出信號(hào)。高溫型壓力變送器推薦</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="高溫型壓力變送器推薦,壓力變送器" src="https://tyunfile.71360.com/UploadFile/xalunqian/637328439170791016/8261680.png"></div><p> 壓力變送器的內(nèi)部結(jié)構(gòu)主要指得是其殼體內(nèi)部的各種元器件，這也是壓力變送器性能好壞的主要因素。主要包括：固定銅片、集成芯片、隔離環(huán)、擴(kuò)散硅芯體、阻尼等。 </p> <p> 固定銅片： </p> <p> 在技術(shù)較為成熟、品質(zhì)較好的壓力變送器產(chǎn)品中，都會(huì)在內(nèi)部添加固定銅片。固定銅片能夠很好的提高絕緣度、抗震性和接地穩(wěn)定性。部分廉價(jià)壓力變送器為節(jié)約成本則不會(huì)添加固定銅片。 </p> <p> 集成芯片： </p> <p> 集成芯片的品質(zhì)能夠很好的保障壓力變送器的抗干擾性和穩(wěn)定性。良好壓力變送器的集成芯片都是采用國(guó)際先進(jìn)的集成芯片，散件拼裝的電路芯片抗干擾性差，穩(wěn)定性差。 </p> <p> 隔離環(huán)： </p> <p> 壓力變送器添加隔離環(huán)能夠提高產(chǎn)品的絕緣度，對(duì)壓力變送器起到很好的保護(hù)作用。 </p> <p> 擴(kuò)散硅芯體： </p> <p> 先進(jìn)的壓力變送器采用進(jìn)口國(guó)際先進(jìn)硅晶圓擴(kuò)散硅芯體，這是壓力變送器高精度高、長(zhǎng)期穩(wěn)定性的保障。壓力變送器的價(jià)格差別主要體現(xiàn)在這個(gè)上邊。劣質(zhì)芯體長(zhǎng)期穩(wěn)定性差，也不能保證壓力變送器的測(cè)量精度。 </p> <p> 阻尼： </p> <p> 在壓力變送器內(nèi)部添加阻尼，為的是提高其抗沖擊的性能，更好的對(duì)壓力變送器內(nèi)部其他結(jié)構(gòu)進(jìn)行防護(hù)，避免瞬間的過壓對(duì)壓力變送器造成沖擊損壞。起到很好的保護(hù)作用。 </p> <p> <br /> </p> <p> <br /> 蒸汽管道壓力變送器壓力變送器在管道上使用，管內(nèi)無介質(zhì)，壓力不為零。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="高溫型壓力變送器推薦,壓力變送器" src="https://tyunfile.71360.com/UploadFile/xalunqian/637328438390146484/6025357.png"></div><p> 壓力變送器過載能力意義 </p> <p> 在壓力變送器的眾多技術(shù)參數(shù)中，過載能力是一個(gè)重要參數(shù)指標(biāo)。我們?cè)鯓永斫鈮毫ψ兯推鞯倪^載能力,這對(duì)壓力變送器的正常使用又有什么重要意義呢？接下來我們一起，一層層揭開這個(gè)神秘的面紗。 </p> <p> 過載:過載就是負(fù)荷過大，超過了設(shè)備本身的額定負(fù)載，產(chǎn)生的現(xiàn)象是電流過大，用電設(shè)備發(fā)熱，線路長(zhǎng)期過載會(huì)降低線路絕緣水平，甚至燒毀壓力變送器設(shè)備或線路。 </p> <p> 過載能力:過載能力指的是壓力變送器超過額定限值以后能夠承受的能力范圍。在通信電源領(lǐng)域，設(shè)備有標(biāo)稱額定值標(biāo)示其所能承載的負(fù)荷，而設(shè)計(jì)時(shí)候往往會(huì)留有余量，該余量被稱為過載能力，通常用于描述UPS性能。 </p> <p> <br /> </p><p> 壓力變送器的供電電壓： </p> <p> 在壓力變送器的使用過程中需要電源為其供電，通常情況下我們?nèi)粘Ｉ钪杏玫降碾妷簽?20V的交流電（AC），對(duì)于壓力變送器而言，需要連續(xù)輸出穩(wěn)定的信號(hào)，直流電(DC)在方向和大小上都是穩(wěn)定的，不會(huì)隨時(shí)間發(fā)生改變，交流電則恰恰相反。這就是大多數(shù)壓力變送器采用直流電的原因。錯(cuò)誤的選擇壓力變送器的供電電壓，會(huì)損壞壓力變送器的電路板，這也是導(dǎo)致壓力變送器出現(xiàn)故障的主要原因之一。采用多大的供電電壓是壓力變送器的一個(gè)重要的問題。 </p> <p> 壓力變送器的常規(guī)供電電壓為12～36V DC,采用此范圍的供電電壓可以有效的避免因電壓過高造成損壞，選擇此范圍的供電電壓也比較符合現(xiàn)在主流設(shè)備，方便壓力變送器與其它設(shè)備系統(tǒng)進(jìn)行對(duì)接、組合使用。習(xí)慣上24V DC的供電電壓用在壓力變送器中應(yīng)用的比較多， 24V DC能夠適應(yīng)大多數(shù)傳輸和負(fù)載需求（帶 250Ω×2個(gè)負(fù)載和 1KM 傳輸距離），高了浪費(fèi)低了應(yīng)用受限制，當(dāng)然如果有需要完全可以改變供電電壓。 </p> <p> <br /> </p> <p> <br /> </p> <p> <br /> 大氣壓力變送器作為變送器家族的一員有著一定的市場(chǎng)使用率。這與大氣壓力變送器的重要作用有關(guān)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="高溫型壓力變送器推薦,壓力變送器" src="https://tyunfile.71360.com/UploadFile/xalunqian/637328439707236328/5737160.png"></div><p> 擴(kuò)散硅壓力變送器工作原理: </p> <p> 擴(kuò)散硅壓力變送器是在單晶硅片上擴(kuò)散一個(gè)惠斯通電橋，當(dāng)被測(cè)介質(zhì)的壓力直接作用于變送器的擴(kuò)散硅膜片上，使得變送器的膜片產(chǎn)生與介質(zhì)壓力成正比的微小位移。正常工作狀態(tài)下，膜片較大位移不大于0.025毫米，這時(shí)擴(kuò)散硅壓力變送器的橋壁電阻值發(fā)生變化，會(huì)產(chǎn)生一個(gè)差動(dòng)電壓信號(hào)，這一信號(hào)經(jīng)過**放大器，將量程相對(duì)應(yīng)的信號(hào)轉(zhuǎn)換輸出一個(gè)標(biāo)準(zhǔn)的模擬信號(hào)或數(shù)字信號(hào)。 </p> <p> 硅的電阻率對(duì)壓力有較高的敏感度，現(xiàn)在普遍使用硅材料作壓力變送器，也就是擴(kuò)散硅壓力變送器。擴(kuò)散硅是制造壓力變送器的中心部件，被封裝在316L不銹鋼的材料之中，外加施壓通過不銹鋼膜片、內(nèi)部密封的硅油傳遞到敏感的芯片上，擴(kuò)散硅敏感元件不直接接觸被測(cè)介質(zhì)，形成壓力測(cè)量的全固態(tài)結(jié)構(gòu)，使得擴(kuò)散硅壓力變送器能夠應(yīng)用更多的工況場(chǎng)合。 </p> <p> 擴(kuò)散硅壓力變送器作為一種高性能的壓力測(cè)量產(chǎn)品，可以很方便地進(jìn)行放大處理，裝配成標(biāo)準(zhǔn)信號(hào)輸出。擴(kuò)散硅壓力變送器廣泛應(yīng)用于石油、化工、冶金、電力、航空、醫(yī)療設(shè)備、汽車等行業(yè)的過程控制。擴(kuò)散硅壓力芯體外加氟橡膠O型圈進(jìn)行可靠密封。擴(kuò)散硅壓力變送器具有結(jié)構(gòu)小巧、安裝方便，抗干擾強(qiáng)、精度高、穩(wěn)定性好、響應(yīng)速度快、耐沖擊等特點(diǎn)。不管什么型號(hào)的差壓變送器，其正、負(fù)壓室都有排氣、排液閥或旋塞;這為我們現(xiàn)場(chǎng)校準(zhǔn)差壓變送器提供了方便。高溫型壓力變送器推薦</p><p style="text-indent:25px">擴(kuò)散硅壓力變送器高準(zhǔn)確度、高穩(wěn)定性、選用進(jìn)口原裝傳感器，線性好，溫度穩(wěn)定性高。高溫型壓力變送器推薦</p><p> 壓力變送器常用選用方法壓力變送器的輸出信號(hào)與壓力變量之間有一給定的連續(xù)函數(shù)關(guān)系（通常為線性函數(shù)）。為了保證您挑選的變送器符合現(xiàn)場(chǎng)的使用要求，選型時(shí)有幾點(diǎn)需要注意的地方： </p> <p> 1、測(cè)量壓力的類型:壓力類型首要有表壓、絕壓、差壓等；表壓是指以大氣壓力為基準(zhǔn)，小于或大于大氣壓力的壓力；絕壓是指以肯定壓力零位為基準(zhǔn)，高于肯定壓力零位的壓力；差壓是指兩個(gè)壓力之間的差值。 </p> <p> 2、準(zhǔn)確度等級(jí):變送器的測(cè)量誤差錯(cuò)按精度等級(jí)來劃分，實(shí)際使用過程中，依據(jù)測(cè)量誤差的需求并本著適用經(jīng)濟(jì)的原則進(jìn)行挑選。 </p> <p> 3、體系的比較大過載:體系的比較大過載應(yīng)小于變送器的過載維護(hù)極限，否則會(huì)影響商品的運(yùn)用壽命乃至損壞商品。2倍丈量規(guī)模的過載維護(hù)是我公司商品的規(guī)范裝備（也可依據(jù)客戶請(qǐng)求進(jìn)行定制）。 </p> <p> 4、測(cè)量范圍:一般按實(shí)際測(cè)量壓力為測(cè)量范圍的80%挑選。 </p> <p> <br /> 高溫型壓力變送器推薦</p><p style="text-indent:25px">西安倫騫電器設(shè)備有限責(zé)任公司致力于儀器儀表，是一家生產(chǎn)型的公司。西安倫騫電器致力于為客戶提供良好的雷達(dá)料位計(jì)，雷達(dá)物位計(jì)，壓力變送器，溫度變送器，一切以用戶需求為中心，深受廣大客戶的歡迎。公司注重以質(zhì)量為中心，以服務(wù)為理念，秉持誠(chéng)信為本的理念，打造儀器儀表良好品牌。在社會(huì)各界的鼎力支持下，持續(xù)創(chuàng)新，不斷鑄造***服務(wù)體驗(yàn)，為客戶成功提供堅(jiān)實(shí)有力的支持。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/1334133.html</p></div></div></div></div></div><div id="v78md7j" class="page-right twoColRt"><div id="ycewypm" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="d8v8ro8" 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) 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