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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>樂山壓力變送器哪家專業(yè)</p><p><span>***更新：</span>2020-05-26 09:31:43</p><p><span id="click" >瀏覽次數(shù)：1次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="fxdhlxb" 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)青羊萬達(dá)廣場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="fzvxjbd" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="7rxf9tl" class="box"><p><p> 壓力變送器是工業(yè)實(shí)踐中**為常用的一種傳感器，其***應(yīng) </p> <p> 壓力變送器（圖1） </p> <p> 用于各種工業(yè)自控環(huán)境，涉及水利水電、鐵路交通、智能建筑、生產(chǎn)自控、航空航天、**、石化、油井、電力、船舶、機(jī)床、管道等眾多行業(yè)。 </p> <p> 壓力變送器有電動(dòng)式和氣動(dòng)式兩大類。電動(dòng)式的統(tǒng)一輸出信號為0～10mA、4～20mA或1～5V等直流電信號。氣動(dòng)式的統(tǒng)一輸出信號為20～100Pa的氣體壓力。 </p> <p> 壓力變送器按不同的轉(zhuǎn)換原理可分為力(力矩)平衡式、電容式，樂山壓力變送器哪家專業(yè)、電感式，樂山壓力變送器哪家專業(yè)、應(yīng)變式和頻率式等，下面簡單介紹幾種壓力(差壓)變送器的原理，樂山壓力變送器哪家專業(yè)、結(jié)構(gòu)、使用、檢修和校驗(yàn)等知識。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="樂山壓力變送器哪家專業(yè)" src="http://tyunfile.71360.com/UploadFile/cdwckj/637107282658583984/7367381.jpg"></div><p> 一般情況下，按實(shí)際測量壓力為測量范圍的80%選取。 </p> <p> 要考慮系統(tǒng)的比較大壓力。一般來說，壓力變送器器壓力范圍比較大值應(yīng)該達(dá)到系統(tǒng)比較大壓力值的1．5倍。一些水壓和過程控制，有壓力尖峰或者連續(xù)的脈沖。這些尖峰可能會達(dá)到“比較大”壓力的5倍甚至10倍，可能造成變送器的損壞。連續(xù)的高壓脈沖，接近或者超過變送器的比較大額定壓力，會縮短變送器的實(shí)用壽命。但提高變送器額定壓力會**變送器的分辨率。可以在系統(tǒng)中使用緩沖器來減弱尖峰，這會降低傳感器的響應(yīng)速度。 </p> <p> 壓力變送器一般設(shè)計(jì)成能在2億個(gè)周期中承受比較大壓力而不會降低性能。在選擇變送器時(shí)可在系統(tǒng)性能與變送器壽命之間找到一個(gè)折中的解決方案。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="樂山壓力變送器哪家專業(yè)" src="http://tyunfile.71360.com/UploadFile/cdwckj/637107282595380859/705330.jpg"></div><p> <p> 工作原理 </p> <p> BY 2088壓力變送器選用進(jìn)口壓力芯片，敏感元件采用擴(kuò)散或離子注入等工藝形成電阻并連接成惠斯通電橋，用微機(jī)械加工技術(shù)在電橋下形成壓力敏感膜片。當(dāng)壓力作用在膜片上時(shí)，電阻值發(fā)生變化并且產(chǎn)生一個(gè)與作用壓力成正比的線性化輸出信號。我們在惠斯通電橋上加上直流電源，就會產(chǎn)生一個(gè)直流電壓信號的輸出。經(jīng)過二次轉(zhuǎn)換線路，實(shí)現(xiàn)兩線制4～20mA輸出。 </p> </p> <p> <p> 功能特點(diǎn) </p> <p> ◆穩(wěn)定性好，滿度、零位長期穩(wěn)定性可達(dá)0.2%FS/年。在補(bǔ)償溫度0～70℃范圍內(nèi)，溫度飄移低于0.2%FS，在整個(gè)允許工作溫度范圍內(nèi)低于0.5%FS。 </p> <p> ◆具有反向保護(hù)、限流保護(hù)電路，在安裝時(shí)正負(fù)極接反不會損壞變送器，異常時(shí)，變送器會自動(dòng)限流在35mA以內(nèi)。 </p> <p> ◆固態(tài)結(jié)構(gòu)，無可動(dòng)部件，高可靠性，使用壽命長 </p> <p> ◆從風(fēng)壓到氣、水、油、蒸汽都可以進(jìn)行高精度的測量，不受被測介質(zhì)質(zhì)量大小的影響。 </p> <p> ◆安裝方便、結(jié)構(gòu)簡單、經(jīng)濟(jì)耐用。 </p> </p><div 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