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clearfix"><p class="current"> 當(dāng)前位置:<a href="http://www.cdcfah.com/">首頁(yè)?<a href="http://www.cdcfah.com/cp/">產(chǎn)品供應(yīng)</a>?<a href="http://www.cdcfah.com/cp/first-_dgdq/">電工電氣</a>?<a href="http://www.cdcfah.com/cp/second-dgdq_dgyqybwr/">電工儀器儀表</a>?<a href="http://www.cdcfah.com/cp/third-dgyqybwr_dzclybxx/">電阻測(cè)量?jī)x表</a>?廣東毫歐表測(cè) 值得信賴深圳市茂迪機(jī)電設(shè)備供應(yīng)</p><div id="3de9dp7" class="leftbox clearfix"><h1>廣東毫歐表測(cè) 值得信賴深圳市茂迪機(jī)電設(shè)備供應(yīng)</h1><div id="cld4pht" class="proBig"><div id="mgynum7" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/szmdjd/637360195476220703/3698061.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="8z3q8uf" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/szmdjd/637360195476220703/3698061.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="shz9bd8" 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>廣東省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>廣東毫歐表測(cè),毫歐表</p><p><span>***更新：</span>2020-11-29 06:18:33</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="hvnmj7j" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">深圳市茂迪機(jī)電設(shè)備有限公司</a></p><p><span>聯(lián)系人：</span>黃富強(qiáng)</p><p><span>郵箱: </span>fuqiang.huang@maodi.net</p><p><span>電話: </span>13509625980</p><p><span>傳真: </span>0755_</p><p><span>網(wǎng)址: </span>http://www.maodi.net</p><p><span>手機(jī): </span>0755-83280136</p><p><span>地址: </span>深南大道6006號(hào)華豐大廈2803、2804</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="v3z7i8e" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="c8x4eon" class="box"><p><p> 飛機(jī)上，通常利用機(jī)體作為一根供電導(dǎo)線。為了保證飛機(jī)的正常供電，要求從機(jī)頭到機(jī)尾的機(jī)體電阻必須小于，即5毫歐姆，才不至于影響飛機(jī)的正常供電。以往對(duì)于特低電阻值的測(cè)量通常采用比較的方法，即手動(dòng)調(diào)節(jié)電橋平衡，在精密電阻箱上得到讀數(shù)，此方法既慢又不準(zhǔn)確。即使采用6位半的高精度數(shù)字表直接測(cè)量電阻，其電阻測(cè)量的分辨率也只能達(dá)到10毫歐姆，廣東毫歐表測(cè)。這說(shuō)明測(cè)量機(jī)體電阻是一個(gè)比較困難的**阻值測(cè)量問(wèn)題。2系統(tǒng)設(shè)計(jì)與誤差分析將測(cè)試線路及測(cè)試儀內(nèi)部的線路電阻考慮在內(nèi)時(shí)，電阻值的測(cè)量范圍要達(dá)到100毫歐姆；為了準(zhǔn)確測(cè)量出機(jī)體電阻，分辨率要達(dá)到。從理論上說(shuō)采用24bit的A/D轉(zhuǎn)換器，廣東毫歐表測(cè)，若輸入量程為5V，則分辨率可達(dá)：LSB=5/(224-1)=。但這省略了一個(gè)前提：被測(cè)量信號(hào)的信噪比必須非常高。如果線路的噪聲達(dá)到1mV，那么即使1A電流在1毫歐姆電阻上產(chǎn)生的1mV電壓信號(hào)也檢測(cè)不出來(lái)，廣東毫歐表測(cè)。根據(jù)需要測(cè)量的電阻值范圍和對(duì)被測(cè)量信號(hào)信噪比的要求，設(shè)計(jì)的系統(tǒng)原理結(jié)構(gòu)如圖1所示。圖1測(cè)試系統(tǒng)原理圖測(cè)試系統(tǒng)的誤差分為量化誤差Δd和模擬誤差Δm兩部分。毫歐表與微歐計(jì)的區(qū)別，是否有二合一的設(shè)備呢？廣東毫歐表測(cè)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="廣東毫歐表測(cè),毫歐表" src="https://tyunfile.71360.com/UploadFile/szmdjd/637360195476220703/3698061.png"></div><p> 什么叫做微歐計(jì)？微歐計(jì)工作原理是什么？ </p> <p> 微歐計(jì)也叫數(shù)字微歐計(jì)，毫歐表，是一種測(cè)量低值電阻的數(shù)字式儀表。它的基本原理是：利用直流恒流源在被測(cè)電阻Rx上產(chǎn)生直流電壓降Ux，然后通過(guò)電壓放大和A/D轉(zhuǎn)換器變?yōu)閿?shù)字顯示的電阻值。在測(cè)量過(guò)程中，采用“四端子”（電流端子、電位端子）測(cè)量法，消除引線和接觸電阻帶來(lái)的誤差。數(shù)字微歐計(jì)具有操作簡(jiǎn)便、省時(shí)、數(shù)顯、對(duì)操作人員要求不高等優(yōu)點(diǎn)。 </p> <p> <p> 微歐計(jì)的工作原理是通過(guò)電橋原理（國(guó)外也稱為開爾文原理）四線法測(cè)量的，即在電阻兩端施加1個(gè)恒流，再通過(guò)儀器檢測(cè)其兩端的電壓，然后通過(guò)儀器自動(dòng)計(jì)算后得出電阻值。其優(yōu)點(diǎn)是測(cè)量的數(shù)據(jù)接近電阻在工作狀態(tài)下的真實(shí)阻值，且消除了測(cè)試線本身電阻的影響。 </p> <p> 而普通萬(wàn)用表測(cè)量電阻一般采用比例法，被測(cè)電阻與標(biāo)準(zhǔn)電阻串聯(lián)，測(cè)量標(biāo)準(zhǔn)電阻和被測(cè)電阻的電壓，兩者電流相同，根據(jù)標(biāo)準(zhǔn)電阻的阻值換算出被測(cè)電阻的阻值。實(shí)際測(cè)量電路也有把標(biāo)準(zhǔn)電阻對(duì)應(yīng)電壓作為基準(zhǔn)電壓，這樣，直接測(cè)量被測(cè)電阻兩端的電壓即可。 </p> 廣西t477w毫歐表使用方法毫歐表在汽車工業(yè)、電動(dòng)機(jī)械制造和航空技術(shù)方面均有廣泛應(yīng)用。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="廣東毫歐表測(cè),毫歐表" src="https://tyunfile.71360.com/UploadFile/szmdjd/637358930955166016/5570607.png"></div><p> 從而達(dá)到了在電路中的導(dǎo)通、切斷的目的。對(duì)于繼電器的“常開、常閉”觸點(diǎn)?？梢赃@樣來(lái)區(qū)分：繼電器線圈未通電時(shí)處于斷開狀態(tài)的靜觸點(diǎn)，稱為“常開觸點(diǎn)”；處于接通狀態(tài)的靜觸點(diǎn)稱為“常閉觸點(diǎn)”。2、熱敏干簧繼電器的工作原理和特性熱敏干簧繼電器是一種利用熱敏磁性材料檢測(cè)和控制溫度的新型熱敏開關(guān)。它由感溫磁環(huán)、恒磁環(huán)、干簧管、導(dǎo)熱安裝片、塑料襯底及其他一些附件組成。熱敏干簧繼電器不用線圈勵(lì)磁，而由恒磁環(huán)產(chǎn)生的磁力驅(qū)動(dòng)開關(guān)動(dòng)作。恒磁環(huán)能否向干簧管提供磁力是由感溫磁環(huán)的溫控特性決定的。3、固態(tài)繼電器（SSR）的工作原理和特性固態(tài)繼電器是一種兩個(gè)接線端為輸入端，另兩個(gè)接線端為輸出端的四端器件，中間采用隔離器件實(shí)現(xiàn)輸入輸出的電隔離。固態(tài)繼電器按負(fù)載電源類型可分為交流型和直流型。按開關(guān)型式可分為常開型和常閉型。按隔離型式可分為混合型、變壓器隔離型和光電隔離型，以光電隔離型為**多。繼電器主要產(chǎn)品技術(shù)參數(shù)1、額定工作電壓是指繼電器正常工作時(shí)線圈所需要的電壓。根據(jù)繼電器的型號(hào)不同，可以是交流電壓，也可以是直流電壓。2、直流電阻是指繼電器中線圈的直流電阻，可以通過(guò)***表測(cè)量。3、吸合電流是指繼電器能夠產(chǎn)生吸合動(dòng)作的**小電流。</p><p> 毫歐表的使用方法： </p> <p> <br /> </p> <p> 操作步驟 </p> <p> （1）選擋：把選擇bai開關(guān)旋到歐姆擋上，并根du據(jù)估測(cè)電阻的大小zhi，選擇好選擇開關(guān)的量程。dao </p> <p> （2）調(diào)零：把兩支表筆相接觸，調(diào)整歐姆擋的調(diào)整旋鈕，使指針指在電阻刻度的零位上。(注意電阻擋的零位在刻度的右端) </p> <p> （3）測(cè)量(讀數(shù))：把兩支表筆分別與待測(cè)電阻的兩端相接，進(jìn)行測(cè)量，指針示數(shù)乘以倍率數(shù)，即為待測(cè)電阻的阻值。 </p> <p> （4）實(shí)驗(yàn)完畢，應(yīng)將兩表筆從插孔中拔出，并將選擇開關(guān)置于“OFF”擋或交流電壓比較高擋。如果歐姆表長(zhǎng)期不用，應(yīng)取出表內(nèi)的電池。 </p> <p> （5）歐姆表內(nèi)電池的電動(dòng)勢(shì)E，內(nèi)阻r，用久后會(huì)改變數(shù)值，會(huì)造成測(cè)量誤差變大。此時(shí)，測(cè)量電阻不夠準(zhǔn)確，較準(zhǔn)確測(cè)量電阻應(yīng)使用電路法。 </p> <p> 歐姆表是直接測(cè)量電阻值的儀表。它是根據(jù)閉合電路的歐姆定律制成的。 </p> <p> <br /> </p> <p> <br /> 微電阻計(jì)或者毫歐表這bai個(gè)原理是du恒流源的方式，儀器內(nèi)部產(chǎn)生恒定的電流zhi。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="廣東毫歐表測(cè),毫歐表" src="https://tyunfile.71360.com/UploadFile/szmdjd/637358931000234375/8568658.png"></div><p> 德國(guó)GMC-I防爆環(huán)境**微歐表、毫歐表METRAHIT27EX-深圳市茂迪機(jī)電設(shè)備有限公司黃富強(qiáng)Metrahit27EX精密微歐表適用于測(cè)量易爆環(huán)境低阻值接觸電阻，例如飛機(jī)燃料箱內(nèi)連接處（Bonding檢測(cè)）的接觸電阻，以及飛機(jī)內(nèi)外部一些潛在的環(huán)境，也可測(cè)量飛機(jī)外表部分的接觸電阻（防雷和油芯測(cè)試）。德國(guó)GMC-I防爆環(huán)境**微歐表、毫歐表METRAHIT27EX應(yīng)用METRAHIT|27EX是一個(gè)緊湊，堅(jiān)固耐用和可靠的工具，它適用于工廠，現(xiàn)場(chǎng)服務(wù)及實(shí)驗(yàn)室的精確測(cè)量和記錄。同時(shí)該儀器適用于認(rèn)證的潛在環(huán)境，嚴(yán)格參照ExII2GExiaIIAT4Gb.標(biāo)準(zhǔn)。調(diào)整校準(zhǔn)儀器儀表中的分流器用于露天采礦，等電位連接系統(tǒng)以及工業(yè)和家庭應(yīng)用產(chǎn)品或設(shè)備的接地連續(xù)性測(cè)試測(cè)試PCB和厚膜電路中的電纜電阻，布線，分流電阻測(cè)量繼電器，接觸器和斷路器中的接觸電阻測(cè)試熔斷器中的電阻，以及大電流電路中的導(dǎo)體電阻測(cè)試變壓器，線圈，小型電動(dòng)機(jī)等的繞組電阻測(cè)量飛機(jī)放電電阻及飛機(jī)表面組件電阻。不間斷電源接觸電阻測(cè)試焊接部位接觸電阻測(cè)試。德國(guó)GMC-I防爆環(huán)境**微歐表、毫歐表METRAHIT27EX通用METRAHIT27EX微歐表使用了眾所周知的TH2（湯姆遜）和Wh2（惠斯通）測(cè)量電橋的現(xiàn)代替代方案，可提供擴(kuò)展的測(cè)量范圍。電橋與毫歐表區(qū)別？怎么分別？廣西t477w毫歐表使用方法</p><p style="text-indent:25px">德國(guó)進(jìn)口的四線法毫歐表是哪一款？大概多少錢一臺(tái)？廣東毫歐表測(cè)</p><p> 毫歐表的使用說(shuō)明：隨著科技的發(fā)展，人們的身邊隨處可見(jiàn)的儀器越來(lái)越多了，但是大家又都不了解他們，就連**基本的他們叫什么名字，他們是干嘛的，也是一知半解而已，***中科小編就來(lái)為大家講解一下毫歐表的使用說(shuō)明吧。 </p> <p> 1.RANGE鍵(上下箭頭)：量程更換器（按下此鍵量程將依次增加或者是減少一個(gè)數(shù)量級(jí)） </p> <p> 2. AUTO：自動(dòng)量程鍵（量程將進(jìn)行自動(dòng)搜索） </p> <p> 3.HOLD模式（如果測(cè)量完畢按下此鍵那么測(cè)量值將固定顯示在屏幕上，即使是將測(cè)試元件從測(cè)試夾上取下來(lái)。要進(jìn)行下一次測(cè)量的時(shí)候需要再按一下HOLD鍵消除HOLD模式） </p> <p> 4. POWER：電源開關(guān) </p> <p> 5. TC功能鍵（按下此鍵將在LCD顯示屏上顯示TC指示燈，這樣就表示溫度補(bǔ)償功能已經(jīng)發(fā)生作用了，如果沒(méi)有TC指示等則表示沒(méi)有使用溫度補(bǔ)償功能。如果是按下SHIFT鍵后再按下此鍵則可以測(cè)量環(huán)境溫度值，如果要返回電阻測(cè)量模式則需要重復(fù)操作再次按下???????SHIFT和TC鍵） </p> <p> 6. LOCK鍵：鍵盤鎖定鍵（如果按下此鍵屏幕上的所有的鍵操作將失效，如果需要解鎖則先按下SHIFT鍵然后再按一下LOCK鍵就解鎖了，鍵盤上的鍵又可以恢復(fù)操作了。） </p> <p> 7. SHIFT鍵：如果按下此鍵的話就表示實(shí)現(xiàn)操作鍵下面藍(lán)色文字所注釋的功能（比如先按SHIFT鍵再按LOCK鍵就表示實(shí)現(xiàn)UNLOCK（解鎖）功能） </p> <p> <br /> 廣東毫歐表測(cè)</p><p style="text-indent:25px">深圳市茂迪機(jī)電設(shè)備有限公司位于深南大道6006號(hào)華豐大廈2803、2804。公司業(yè)務(wù)分為電能質(zhì)量分析儀，功率分析儀，亮度計(jì)，色差儀等，目前不斷進(jìn)行創(chuàng)新和服務(wù)改進(jìn)，為客戶提供良好的產(chǎn)品和服務(wù)。公司秉持誠(chéng)信為本的經(jīng)營(yíng)理念，在儀器儀表深耕多年，以技術(shù)為先導(dǎo)，以自主產(chǎn)品為重點(diǎn)，發(fā)揮人才優(yōu)勢(shì)，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(lái)源地址: http://www.cdcfah.com/cp/2191194.html</p></div></div></div></div></div><div id="h3c9jgd" class="page-right twoColRt"><div id="28k9mo7" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="z7723f7" 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)" 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