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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>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>雅安壓力儀表推薦,壓力儀表</p><p><span>***更新：</span>2020-11-08 06:10:07</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="yykwawa" 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: </span>028-87463776</p><p><span>地址: </span>四川省成都市青羊區(qū)青羊萬達廣場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="qamaeie" class="page-proshow02"><p class="title">詳細說明</p><div id="gq4ikos" class="box"><p><p> 機械壓力表中的彈性敏感元件隨著壓力的變化而產(chǎn)生彈性變形。機械壓力表采用彈簧管（波登管），膜片，膜盒及波紋管等敏感元件并按此分類。所測量的壓力一般視為相對壓力。一般相對點選為大氣壓力。彈性元件在介質(zhì)壓力作用下產(chǎn)生的彈性變形，通過壓力表的齒輪傳動機構(gòu)放大，壓力表就會顯示出相對于大氣壓的相對值(或高或低)。 </p> <p> 在測量范圍內(nèi)的壓力值由指針顯示，雅安壓力儀表推薦，刻度盤的指示范圍一般做成270度，雅安壓力儀表推薦。 </p> <p> 在工業(yè)過程控制與技術(shù)測量過程中，雅安壓力儀表推薦，由于機械式壓力表的彈性敏感元件具有很高的機械強度以及生產(chǎn)方便等特性，使得機械式壓力表得到越來越***的應(yīng)用。雅安壓力儀表推薦</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="雅安壓力儀表推薦,壓力儀表" src="http://tyunfile.71360.com/UploadFile/cdwckj/637107306707148437/9849450.jpg"></div><p> 儀表的分類方法很多，根據(jù)不同的原則可以分為許多類： </p> <p> <p> (1)檢測儀表的分類 </p> <p> 根據(jù)其檢測被測量的不同分為：溫度檢測儀表、壓力檢測儀表、流量檢測儀表、物位檢測儀表、分析儀表。 </p> <p> (2)顯示儀表的分類 </p> <p> 根據(jù)記錄、指示、模擬和數(shù)字等功能的不同分為：記錄儀表、指示儀表、模擬儀表、數(shù)顯儀表。 </p> <p> (3)在自控儀表的校準(zhǔn)、維修、安裝過程中，有些儀表稱為一次儀表，有些儀表稱為二次儀表。 </p> <p> 一次儀表是指安裝在現(xiàn)場且直接與工藝介質(zhì)相接觸的儀表，如壓變，溫變等。熱電阻、熱電偶一般不稱其為儀表，而稱為感溫元件。實際應(yīng)用中我們把安裝在現(xiàn)場的儀表(個別除外，如電動閥門定位器)統(tǒng)稱為一次儀表。 </p> <p> 二次儀表是指儀表示值信號不直接來自工藝介質(zhì)的各類儀表的總稱，其信號通常來自一次儀表的傳送信號。二次儀表通常安裝在值班室內(nèi)的儀表盤上。 </p> <p> 儀表分類只是為儀表維修、維護、安裝及管理上方便，如何進行分類及稱謂還要根據(jù)實際情況而定。 </p> 雅安壓力儀表推薦</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="雅安壓力儀表推薦,壓力儀表" src="http://tyunfile.71360.com/UploadFile/cdwckj/637107306626250000/2926369.jpg"></div><p> 壓力的常識： </p> <p> 1、壓力概念：這里的壓力概念，實際上指的是物理學(xué)上的壓強，即單位面積上所承受壓力的大小。 </p> <p> 2、壓力的兩種表示方法： </p> <p> ***壓力：以***真空為基準(zhǔn)，高于***真空的壓力； </p> <p> 相對壓力：以大氣壓力作為基準(zhǔn)所標(biāo)示的壓力。 ***壓力=大氣壓力+相對壓力 </p> <p> 壓力表的知識： </p> <p> 1、概念：以大氣壓力為基準(zhǔn)，用于測量小于或大于大氣壓力的儀表。 </p> <p> A、壓力表按其測量精確度，可分為精密壓力表、一般壓力表； </p> <p> B、壓力表按其指示壓力的基準(zhǔn)不同，分為一般壓力表、***壓力表、差壓表； </p> <p> C、壓力表按其測量范圍，分為真空表、壓力真空表、微壓表、低壓表、中壓表及高壓表； </p> <p> D、壓力表按其組成，液柱式，電子式和機械式。 </p><p> 誤差的分類 </p> <p> ①***誤差：某被測量的儀表顯示值與約定真值之間的差值。 </p> <p> ②相對誤差：***誤差與約定真值的百分比。 </p> <p> ③引用誤差：***誤差與儀表滿量程的百分比。 </p> <p> ④比較大引用誤差：比較大***誤差與量程的百分比。 </p> <p> ⑤回程誤差：相同條件下，被測量不變，計量器具正反行程不同時其示值之差。 </p> <p> ⑥精度：是衡量儀表測量數(shù)值精確度的重要指標(biāo)，用比較大引用誤差去掉“±”和“%”表示，其序列為0．005、0．02、0．05、0．1、0．2、1．0、1．5、2．5等。 </p> <p> 誤差分析基礎(chǔ) </p> <p> 誤差可分為系統(tǒng)誤差、隨機誤差和粗大誤差等。 </p> <p> (1)準(zhǔn)確度：測量中系統(tǒng)誤差的反映，表征測量結(jié)果偏離真實值的程度。 </p> <p> 通常認(rèn)為，測量準(zhǔn)確度是一個定性的概念，不宜將其定量化。例如，不宜說準(zhǔn)確度為0．25%、16mg或±16mg等。在實際工作中，測量準(zhǔn)確度可以用測量結(jié)果對約定真值的偏移來估計。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="雅安壓力儀表推薦,壓力儀表" src="http://tyunfile.71360.com/UploadFile/cdwckj/637107307858222656/70369.jpg"></div><p> 留針記憶壓力表用來測量煤礦脈沖壓力大、使用環(huán)境惡劣條件下綜采設(shè)備壓力及峰值的儀表。該儀表具有體積小、精度高、耐震、抗沖擊、記憶****值等特點。 </p> <p> <p> 儀表以一般壓力表、耐震壓力表為主體，內(nèi)部加設(shè)記憶針裝置組成。 </p> <p> 儀表使用前先將記憶針調(diào)節(jié)到零位，在使用中壓力上升時，紅色記憶針會跟隨壓力指示針的運動而運動，指示出曾出現(xiàn)的壓力值。 </p> <p> 儀表使用條件：與選用的原各型壓力表相同。 </p> <p> 外形尺寸：與選用的原各型壓力表相同。 </p> <p> 普通不銹鋼壓力表，該系列儀表全部采用有良好耐腐蝕性能的不銹鋼材質(zhì)制造，主要零件采用1Cr18Ni9、OCr18Ni12Mo2Ti、USU316、USU316L等材料，適用于有腐蝕性的環(huán)境，可檢測有弱腐蝕性，但不結(jié)晶、不凝固、粘度低的液體、氣體或蒸汽等介質(zhì)的壓力。該系列儀表主要應(yīng)用于礦山、石油、化工、冶煉、電力、食品、醫(yī)藥、航天等行業(yè)。 </p> 四川壓力儀表供應(yīng)</p><p style="text-indent:25px">雅安壓力儀表推薦</p><p> 計量檢定 </p> <p> 計量檢定是指為評定計量器具的計量性能，確定其是否合格所進行的全部工作，包括檢驗和加封蓋印等。它是進行量值傳遞的重要形式，是保證量值準(zhǔn)確一致的重要措施。 </p> <p> 計量檢定按照管理環(huán)節(jié)的不同，可以分以下五種：周期檢定、出廠檢定、修后檢定、進口檢定、仲裁檢定。 </p> <p> 計量器具按照管理性質(zhì)的不同，可以分為強制檢定和非強制檢定，兩者又統(tǒng)稱為計量法制檢定。 </p> <p> 儀表性能指標(biāo) </p> <p> 檢測儀表中常用的基本性能包括測量范圍及量程、基本誤差、精度等級、靈敏度、分辨率、漂移、可靠性以及抗干擾性能指標(biāo)等。 </p> <p> (1)測量范圍：是指該儀表按規(guī)定的精度進行測量的被測變量的范圍。 </p> <p> (2)量程：量程=測量上限值-測量下限值。 </p> <p> (3)零點遷移：是指零點的變化，而量程遷移是指量程的變化。 </p> <p> (4)靈敏度：反應(yīng)儀表對被測參數(shù)變化的靈敏程度，常以在被測參數(shù)改變時，經(jīng)過足夠時間儀表指示值達到穩(wěn)定狀態(tài)后，儀表輸出變化量與引起此變化的輸入量之比作為靈敏度。 </p> <p> (5)分辨率：又稱靈敏限，它是儀表輸出能響應(yīng)和分辨的**小輸入量，是靈敏度的一種反應(yīng)。雅安壓力儀表推薦</p><p style="text-indent:25px">成都皖川科技有限公司是一家研發(fā)、銷售計算機軟硬件;計算機系統(tǒng)集成;銷售電子產(chǎn)品、儀器儀表、電氣設(shè)備、機械設(shè)備、閥門、水泵、電線電纜、通訊器材(不含無線廣播電視發(fā)射及衛(wèi)星地面接收設(shè)備)、醫(yī)療器械(***一類)、實驗設(shè)備、化工產(chǎn)品(不含危險化學(xué)品)、五金交電、照明設(shè)備。的公司，致力于發(fā)展為創(chuàng)新務(wù)實、誠實可信的企業(yè)。成都皖川科技擁有一支經(jīng)驗豐富、技術(shù)創(chuàng)新的專業(yè)研發(fā)團隊，以高度的專注和執(zhí)著為客戶提供耐磨熱電偶，氣體檢測儀器，便攜式氣體報警控制器，雙金屬溫度計。成都皖川科技繼續(xù)堅定不移地走高質(zhì)量發(fā)展道路，既要實現(xiàn)基本面穩(wěn)定增長，又要聚焦關(guān)鍵領(lǐng)域，實現(xiàn)轉(zhuǎn)型再突破。成都皖川科技始終關(guān)注儀器儀表市場，以敏銳的市場洞察力，實現(xiàn)與客戶的成長共贏。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/1898848.html</p></div></div></div></div></div><div id="egk24uw" class="page-right twoColRt"><div id="seimgs2" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="quiwoos" 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配件哪家強信息推薦自業(yè)物資供應(yīng)" 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