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• E+H雷達(dá)液位計(jì)的應(yīng)用與維護(hù)

  液位儀表是石油化工領(lǐng)域中中不可缺少的重要儀表。液位儀表的種類繁多，根據(jù)介質(zhì)和現(xiàn)場條件的不同，各類液位計(jì)各具優(yōu)勢，形成一個(gè)多元化的局面。罐區(qū)儲(chǔ)罐由于其容積較大，要求液位計(jì)的精度較高，過去大多浮子液位計(jì)，伺服式和差壓式也有一定應(yīng)用量。浮子液位計(jì)安裝復(fù)雜，可靠性較低，差壓式液位計(jì)受介質(zhì)密度和溫度影響很大，為消除這些影響，一套完善的靜壓測量系統(tǒng)其價(jià)格也很；伺服式液位計(jì)精度較高，但由于其有機(jī)械傳動(dòng)機(jī)構(gòu)，不可避免帶來磨損問題，同時(shí)價(jià)格也偏高。近年來出現(xiàn)的光纖液位計(jì)、磁致伸縮液位、超聲波液位計(jì)以及放射性液位計(jì)各具其優(yōu)缺點(diǎn)，光纖液位計(jì)可以做到現(xiàn)場無電檢測，安全性好，這是其突出的優(yōu)勢，缺點(diǎn)是仍然有很多機(jī)械傳動(dòng)部件，故障率就會(huì)增加，安裝也復(fù)雜些。磁致伸縮液位精度較高，但由于其接觸的測量方式和較高的安裝、維護(hù)要求導(dǎo)致市場普及不廣。[詳細(xì)]

  2018-09-04 10:01

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• E+H恩德斯豪斯雷達(dá)液位計(jì)的維護(hù)

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• E+H智能型導(dǎo)波雷達(dá)液位計(jì)FMP40資料

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  2018-09-04 10:01

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• E+H FMP40系列導(dǎo)波雷達(dá)液位計(jì)技術(shù)資料

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  2018-11-16 10:01

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• E+H雷達(dá)料位計(jì)維護(hù)資料下載

  E+H雷達(dá)料位計(jì)的基本原理：雷達(dá)波是一種特殊形式的電磁波，E+H雷達(dá)料位計(jì)利用了電磁波的特殊性能來進(jìn)行料位檢測。電磁波的物理特性與可見光相似，傳播速度相當(dāng)于光速。其頻率為300MHz-3000GHz。電磁波可以穿透空間蒸汽、粉塵等干擾源，遇到障礙物易于被反射，被測介質(zhì)導(dǎo)電性越好或介電常數(shù)越大，回波信號(hào)的反射效果越好。有些工況下所使用的E+H雷達(dá)料位計(jì)，因?yàn)镋+H傳感器安裝位置不當(dāng)及條件所致，出現(xiàn)了一些問題，下面將對(duì)一些使用中的問題提出解決方案,供大家參考。1．探頭結(jié)疤和頻繁故障的解決方法**個(gè)辦法是將探頭安裝位置提高，但是有時(shí)候安裝條件限制，不能提高的情況下，就應(yīng)采用將料位測量值與該槽的泵聯(lián)鎖的辦法，解決這一難題：將Z高料位設(shè)定值減小0.5m左右，當(dāng)料位達(dá)到該Z高值時(shí)，即可停進(jìn)料泵或開啟出料泵。2．E+H雷達(dá)料位計(jì)被淹相應(yīng)的改進(jìn)辦法解決這種問題的辦法是將雷達(dá)料位計(jì)改為導(dǎo)波管式測量。仍在原開孔處安裝導(dǎo)波管式雷達(dá)料位計(jì)，導(dǎo)波管高于排汽管0.2m左右，這樣一來，即使出現(xiàn)料漿從排汽管溢出的惡劣工況，也不會(huì)使料位計(jì)天線被料漿淹沒，而且避免了攪拌器渦流的干擾及大量蒸汽從探頭處冒出，減少了對(duì)探頭的損害，同時(shí)由于導(dǎo)波管聚焦效果好，接收的雷達(dá)波信號(hào)更強(qiáng)，取得了很好的測量效果。使用導(dǎo)波管測量方式，可以改善表計(jì)測量條件，提高儀表測量性能,具有很高的推廣應(yīng)用價(jià)值。3．關(guān)于泡沫對(duì)測量的影響：干泡沫和濕泡沫能將雷達(dá)波反射回來，對(duì)測量無影響；中性泡沫則會(huì)吸收和擴(kuò)散雷達(dá)波，因而嚴(yán)重影響回波的反射甚至沒有回波。當(dāng)介質(zhì)表面為稠而厚的泡沫時(shí)，測量誤差較大或無法測量，在這種工況下，雷達(dá)料位計(jì)不具有優(yōu)勢，這是其應(yīng)用的局限性。4．對(duì)于天線結(jié)疤的處理：介電常數(shù)很小的掛料在干燥狀態(tài)下對(duì)測量無影響，而介電常數(shù)很高的掛料則對(duì)測量有影響?？捎脡嚎s空氣吹掃（或清水沖洗），且冷卻的壓縮空氣可降低法蘭和電器元件的溫度。還可用酸性清洗液清洗堿性結(jié)疤，但在清洗期間不能進(jìn)行料位測量。E+H雷達(dá)料位計(jì)適用于酸堿儲(chǔ)罐、漿料儲(chǔ)罐、固體顆粒、小型儲(chǔ)油罐。各類導(dǎo)電、非導(dǎo)電介質(zhì)、腐蝕性介質(zhì)。如煤倉、灰倉、油罐、酸罐等。[詳細(xì)]

  2018-10-16 10:00

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• 玻璃管液位計(jì)的使用與維護(hù)

  玻璃管液位計(jì)是一種直讀式液位測量儀表，適用于工業(yè)生產(chǎn)過程中一般貯液設(shè)備中的液體位置的現(xiàn)場檢測，其結(jié)構(gòu)簡單，測量準(zhǔn)確，是傳統(tǒng)的現(xiàn)場液位測量工具。該液位計(jì)兩端各裝有一個(gè)針形閥，化學(xué)分析儀器當(dāng)玻璃管發(fā)生意外事故而破碎時(shí)，針形閥在容器壓力作用下自動(dòng)關(guān)閉，以防容器內(nèi)介質(zhì)繼續(xù)外流。FLG-05型管式液位計(jì)是集玻璃管液位計(jì)和板式液位計(jì)以及鍋爐水位計(jì)多重優(yōu)點(diǎn)于一身的新型的液位計(jì)。（克服了原玻璃管液位計(jì)怕碎、不堅(jiān)固、不安全、不耐壓、顯示不清楚、使用溫度低的弱點(diǎn)）它在一定程度上能替代玻璃板液位計(jì)，比同樣特性的液位計(jì)價(jià)格低廉。玻璃管液位計(jì)的結(jié)構(gòu)原理儀表在上下閥上都裝有螺紋接頭或者通過法蘭與容器連接構(gòu)成連通器，透過玻璃可直接讀得容器內(nèi)液位的高度。儀表在上下閥內(nèi)都裝有鋼球，當(dāng)玻璃板因意外事故破壞時(shí)，鋼球在容器內(nèi)壓力作用下阻塞通道，這樣容器便自動(dòng)密封，可以防止容器內(nèi)的液體繼續(xù)外流。更多詳情請查看：上海風(fēng)雷自動(dòng)化儀表有限公司www./st3880[詳細(xì)]

  2018-11-13 15:46

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• 德國VEGA雷達(dá)料位計(jì)、VEGA雷達(dá)液位計(jì)

  上海維特銳特價(jià)供應(yīng)德國VEGA雷達(dá)料位計(jì)、VEGA雷達(dá)液位計(jì)、VEGA超聲波料位計(jì)、VEGA雷達(dá)導(dǎo)波料位計(jì)、VEGA射頻導(dǎo)納料位計(jì)、VEGA料位開關(guān)等產(chǎn)品。德國VEGA公司是世界上一家的物位及壓力測量儀表的制造商，其主要產(chǎn)品有：VEGAPULS68，VEGASON超聲波料位計(jì)、超聲波液位計(jì)，VEGAFLEX導(dǎo)向微波式，VEGACAL電容式，VEGAVIB振棒式料位開關(guān)，VEGASWING液位開關(guān)，VEGABAR壓力變送器等。德國VEGA的優(yōu)點(diǎn)主要表現(xiàn)為：采用非接觸式測量，不受介質(zhì)特性影響（高溫、高壓、真空、粉塵、蒸汽及測量腐蝕性極強(qiáng)或混合度高的介質(zhì)）；可測量液體或固體介質(zhì)，且混合或更換介質(zhì)對(duì)于測量結(jié)果都沒有影響，也不需要重新調(diào)試儀表；由于采用非接觸式測量，VEGASON的維護(hù)保養(yǎng)非常簡單。多年來，德國VEGA為冶金、礦產(chǎn)、建材、石化、能源、電力、化工、水處理、食品、醫(yī)藥、造紙、造船、機(jī)械制造等領(lǐng)域提供了優(yōu)質(zhì)的產(chǎn)品和服務(wù)。德國VEGA公司是世界上的物位測量儀表生產(chǎn)廠家。主要產(chǎn)品有雷達(dá)物位計(jì)，料位計(jì)，導(dǎo)波料位計(jì)，液位計(jì)，超聲波料位計(jì)，振動(dòng)液位開關(guān)，振動(dòng)料位開關(guān)，電容式料位開關(guān)，雷達(dá)料位計(jì)，導(dǎo)波液位計(jì)，超聲波液位計(jì)等。VEGASON64、VEGASON65、VEGASON66可以通過萬向節(jié)安裝對(duì)準(zhǔn)介質(zhì)表面。對(duì)于VEGASON64…66可以有四種不同的安裝類型:VEGAA型:一體式，發(fā)蘭型VEGA型:一體式，安裝萬向節(jié)VEGAC型:分體式，安裝萬向節(jié)VEGAD型:分體式，螺紋安裝PULS61.XXAGPHAMXX（此系列量程0...20米，溫度：-40℃...80℃，壓力-1...30bar）PULS62.XXDAM5HKNAX（此系列量程0...35米，溫度-40...200℃,壓力-1...40bar）PS63.XXPAKHKMXX（此系列量程0...20米，溫度-200℃...150℃,壓力-1...16bar）PS65.CXLGDHAMXX（此系列量程0...35米，溫度-40℃...150℃，壓力-1...16bar）PULS66.XXHFK2VDMXX（此系列量程0...35米，溫度-40℃...400℃，壓力-1...160bar）PS67.XXBXCHAMXX（此系列量程0...15米，溫度-40℃...80℃,壓力-1...3bar）PULS68.XXEGD2HKMAX（此系列量程0...70米，溫度-40℃...200℃,壓力-1...40bar）SON61.XXAGHKNAX（此系列量程液體0.25...5米/固體0.25...2米，溫度-40℃...80℃,壓力-0.2...2bar）SON62.XXAGHKNAX（此系列量程液體0.4...8米/固體0.4...3.5米，溫度-40℃...80℃,壓力-0.2...2bar）SON63.XXAXHKMAX（此系列量程液體0.6...15米/固體0.6...7米，溫度-40℃...80℃,壓力-0.2...1bar）SON64.GXALPVDMAX（此系列量程液體1...25米/固體1...15米，溫度-40℃...80℃,壓力-0.2...0.5bar）SON65.XXBASVDMX（此系列量程液體0.8...45米/固體0.8...25米，溫度-40℃...80℃,壓力-0.2...0.5bar）FLEX61.XXCGD2HAMAX（此系列量程線纜可測范圍0...32米，探桿可測0...4米，溫度-40℃...150℃,壓力-1...40bar）FLEX62.XXAGDIHDMX（此系列量程線纜可測范圍0...60米，探桿可測0...6米，溫度-40℃...150℃,壓力-1...40bar）FLEX63.XXBFDFKMAX（此系列量程線纜可測范圍0...32米，探桿可測0...4米，溫度-40℃...150℃,壓力-1...16bar）VEGA產(chǎn)品主要用于物位測量,壓力測量,溫度測量等，優(yōu)點(diǎn)在于：-通過調(diào)制解調(diào)器(模擬,ISDN,GSM)或以太網(wǎng)(TCP/IP)遠(yuǎn)程詢問/遠(yuǎn)程診斷-通過VisualVEGA或網(wǎng)頁瀏覽器顯示(比如：InternetExplorer)-通過其調(diào)整功能對(duì)信號(hào)進(jìn)行分析處理，可以針對(duì)容器形狀進(jìn)行線性化處理，刻度可選-監(jiān)控限定值，可以通過e-mail或SMS報(bào)警-通過e-mail或SMS在規(guī)定的時(shí)間自動(dòng)傳送物位數(shù)據(jù)-功能監(jiān)控(輸入端短路或斷路，儀表故障)-導(dǎo)軌安裝35x7.5符合EN50022,包括插座-調(diào)整顯示元件帶背光燈(可以遠(yuǎn)程設(shè)定plics?-傳感器)-通過安裝調(diào)試軟件PACTwareTM的計(jì)算機(jī)調(diào)試(連接通過接口VEGACONNECT或RS232/以太網(wǎng)接口)-通過WEB-VV進(jìn)行數(shù)據(jù)交換傳感器輸入：Multidrop方式的5個(gè)防爆的或15個(gè)HART傳感器；繼電器輸出：1x故障信號(hào)；保護(hù)方式：IP30；工作電壓：20…250VAC,DC[詳細(xì)]

  2018-10-09 10:00

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• 國產(chǎn)高精度雷達(dá)液位計(jì)樣本

  國產(chǎn)高精度雷達(dá)液位計(jì)樣本[詳細(xì)]

  2024-09-28 00:53

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• 電子尺-E+H 液位開關(guān) E+H液位計(jì) 資料

  電子尺-E+H液位開關(guān)E+H液位計(jì)資料常用型號(hào)：FMU230E-AA32，F(xiàn)MU231E-AA32E+H公司是一家世界的專業(yè)生產(chǎn)工業(yè)自動(dòng)化儀表的跨國集團(tuán)公司，公司大多數(shù)產(chǎn)品的市場份額在同類產(chǎn)品中名列前茅，是世界范圍內(nèi)自動(dòng)化工業(yè)領(lǐng)域的之一。超聲波物位計(jì)是利用超聲波反射原理檢測常壓或低壓容器內(nèi)液體液位或固體料位的非接觸式物位測量儀表，可廣泛應(yīng)用于化工、電力、冶金、輕工、水處理等工業(yè)或民用部門的各種液體或固體物位測量，并可以對(duì)明渠、堰中的流量進(jìn)行測量。ProsonicTFMU230A智能型一體化非接觸式連續(xù)物位測量儀，適用于各種過程控制系統(tǒng)。ProsonicT適用于對(duì)液體及顆粒料位進(jìn)行非接觸式連續(xù)物位測量的一體化儀表。有兩種不同測量范圍的變送器可供選擇。FMU230固體測量范圍：2m液體測量范圍：4mFMU231固體測量范圍：3.5m液體測量范圍：7m兩種變送器都配有一體化的溫度傳感器，用于對(duì)時(shí)間行程測量原理的補(bǔ)償。產(chǎn)品性能螺紋連接G1?，1?NPT或G2，2NPT可旋轉(zhuǎn)外殼LED發(fā)光顯示能快速監(jiān)測操作狀態(tài)兩線制供電，帶可選現(xiàn)場顯示，按鈕操作簡便ProsonicTFMU231A智能型一體化非接觸式連續(xù)物位測量儀，適用于各種過程控制系統(tǒng)。ProsonicT適用于對(duì)液體及顆粒料位進(jìn)行非接觸式連續(xù)物位測量的一體化儀表。有兩種不同測量范圍的變送器可供選擇。FMU230固體測量范圍：2m液體測量范圍：4mFMU231固體測量范圍：3.5m液體測量范圍：7m兩種變送器都配有一體化的溫度傳感器，用于對(duì)時(shí)間行程測量原理的補(bǔ)償。產(chǎn)品性能螺紋連接G1?，1?NPT或G2，2NPT可旋轉(zhuǎn)外殼LED發(fā)光顯示能快速監(jiān)測操作狀態(tài)兩線制供電，帶可選現(xiàn)場顯示，按鈕操作簡便E+H超聲波物位計(jì)德國E+HFMU230/231系列超聲波物位計(jì)FMU230FMU231進(jìn)口超聲波物位計(jì)歐洲超聲波物位計(jì)德國超聲波物位計(jì)E+H超聲波液位計(jì)德國E+HFMU230/231系列超聲波液位計(jì)FMU230FMU231進(jìn)口超聲波液位計(jì)歐洲超聲波液位計(jì)德國超聲波液位計(jì)FMU90-R12CA232AA3A，F(xiàn)DU91-RG2AA，F(xiàn)MU90,FDU83,FMU41,FMU40,FMU90-R21CA232AA3AFDU96-RG2AFDU91-RG1AAFMU90-R11CA111AA3AFMU42-APB2A22AFMU41-ANB2A4FMU42-4VB2C23AFDU93-RG1AFMU43-AMH2A2FMU41-ARB2A2FMU40-ARB2A2FMU90-R11CA111AA3AFDU91-RG2AAFTU231E-AA32FMU90-R11CA133AA3AFMU41-ARB2A2FMU42-AMB2A22AFMU230E-AA32FMU90-J11CB111AA3AFDU92-EN1AFMU40-4NB2C4FMU41-4NB2C4FMU230E-AA32FMU230E-AA33FMU40-ANG2A2FMU42-ATG2A22AFMU42-ATG2A22A　FMU90-R11CA111AA1AFDU91-RG1AAFMU40-ANB2A2FMU231E-AA42FMU90-R11CA131AA3AFDU91-RG2AAFMU90-R11CA212AA3AFDU92-RG3AFMU90-R11CA232AA3AFDU91-RG2AAFMU41-ARB2A4FDU86-EN1FMU40-4RB1C4FMU860-R1A1A1FDU83-UN3FDU80-RN2APMC71-ABA1H2GAAAAFDU81-JG4BFDU83-RN3FDU91-RG2AAFDU91-RG1AAFMU90-R21CA232AA3AFDU80-JG1BFMU230E-AA22FMU42-APB2A22AFMU231E-AA32FMU41-1RB2A2FMU41-ARH2A2FMU90-R21CA111AA3AFDU91-RG2AAFMU90-R11CB131AA3AFDU81-RG1BFMU90-R12EA232AA3AFDU91-RGAFMU40-1NB3A4FAU70A-2452FHX40-11BFDU91-RG2AAFDU91-RG1AAFMU90-R11CA111AA3AFDU91-RG2AAFMU90-R11CA111AA3AFMU40-1RB2A2FMU90-R12CA232AA3AFMU90-R12CA131AA3AFDU91-JG1AAFMU90-J11CA111AA3AFDU81-RG2AFDU82-RG3FMU90-R21CA111AA1AFMU40-ARB1A3FDU93-RG4AFDU83-RG2FMU40-NNB2A4[詳細(xì)]

  2018-09-18 10:00

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• E+H液位計(jì)選型資料

  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  2018-11-16 10:01

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• 導(dǎo)波雷達(dá)液位計(jì)說明及選型

  導(dǎo)波雷達(dá)液位計(jì)測量原理接觸式雷達(dá)是基于時(shí)間行程原理的測量儀表。雷達(dá)波以光速運(yùn)行，運(yùn)行時(shí)間可以通過電子部件被轉(zhuǎn)換成物位信號(hào)。傳感器發(fā)射出脈沖并沿纜式或桿式傳導(dǎo)，當(dāng)脈沖波遇到物料表面時(shí)反射回來被儀表內(nèi)的接收器接收并將距離信號(hào)轉(zhuǎn)化為物位信號(hào)。導(dǎo)波雷達(dá)液位計(jì)輸入反射的脈沖信號(hào)沿纜式或桿式傳至儀表電子線路部分，微處理器對(duì)信號(hào)進(jìn)行處理，識(shí)別出微波脈沖在物料表面所產(chǎn)生的回波。正確的回波信號(hào)識(shí)別由智能軟件完成，距離物料表面離D與脈沖的時(shí)間行程T成正比：D=C×T/2其中C為光速因空罐的距離E已知，則物位L為：L=E-D導(dǎo)波雷達(dá)液位計(jì)輸出通過輸入空罐高度E（=零點(diǎn)），滿罐高度F（=滿量程）及一些應(yīng)用參數(shù)來設(shè)定，應(yīng)用參數(shù)將自動(dòng)使儀表適應(yīng)測量環(huán)境。對(duì)應(yīng)于4－20mA輸出。[詳細(xì)]

  2018-09-03 10:00

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• 德國E+H_雷達(dá)液位計(jì)資料一覽

  德國E+H_雷達(dá)液位計(jì)資料一覽ProsonicFlo道式流量計(jì)通過兩側(cè)的傳感器對(duì)測量管道內(nèi)流經(jīng)介質(zhì)的流量，傳感器對(duì)呈一定角度分別安裝在流量計(jì)的相對(duì)側(cè)，即其中一側(cè)的傳感器處于另一側(cè)的下游位置處。聲波信號(hào)在傳感器對(duì)間傳播，計(jì)算每組信號(hào)的運(yùn)行時(shí)間可以測得介質(zhì)的流量信號(hào)。順流方向上聲波的傳播速度高于逆流方向上的聲波傳播速度。因此，會(huì)產(chǎn)生聲波信號(hào)運(yùn)行時(shí)間差(ΔT)?；跁r(shí)間差(ΔT)，可計(jì)算出傳感器對(duì)間介質(zhì)的流速。綜合考慮每對(duì)傳感器測得的介質(zhì)流速、管道橫截面積和流體動(dòng)態(tài)性能，測量系統(tǒng)計(jì)算流體的體積流量。即使將流量計(jì)安裝在典型的流場干擾因素(例如：單向或多向彎頭)之后，傳感器的結(jié)構(gòu)設(shè)計(jì)和安裝位置確保僅需要很小的直管段長度。高級(jí)數(shù)字信號(hào)處理功能用于流量測量過程驗(yàn)證，降低多相流測量的不確定性，增加了測量的可靠性。測量系統(tǒng)測量系統(tǒng)包括一臺(tái)變送器和一個(gè)傳感器。兩種結(jié)構(gòu)類型供用戶選擇：?一體式結(jié)構(gòu)：變送器和傳感器組成一個(gè)整體機(jī)械單元?分體式結(jié)構(gòu)：變送器和傳感器均為單獨(dú)的機(jī)械單元，需分體安裝變送器[詳細(xì)]

  2018-09-22 10:00

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• 雷達(dá)液位計(jì)動(dòng)態(tài)演示圖原理

  重錘式料位計(jì)由傳感器和儀表組成，傳感器采用重錘探測式，各種信號(hào)由特制的采集單元取出，無機(jī)械觸點(diǎn)、運(yùn)行可靠。傳感器放置倉頂，重錘由電機(jī)通過不銹鋼帶或鋼絲繩牽引吊入在倉內(nèi)，儀表控制傳感自動(dòng)定時(shí)對(duì)料位進(jìn)行探測，每次測量時(shí)重錘從倉頂起始位置開始下降，碰到料面立即返回到倉頂?shù)却乱淮螠y量。儀表通過對(duì)重錘下降過程傳感信號(hào)的處理可得到倉頂?shù)搅厦娴木嚯xhl，倉高H是由用戶預(yù)置的，這樣用倉高H減去hl便可得出料位高度h=H-hl，儀表直接顯示料位高度h。系統(tǒng)采用PLC控制，功能強(qiáng)、穩(wěn)定性高、操作簡易；特別適用于電力、冶金、水泥、煤炭、化工、食品等行業(yè)筒形料倉的粉末狀、塊狀、顆粒狀態(tài)及液態(tài)物料的料位檢測與控制。尤其是本料位指示計(jì)設(shè)置有通訊功能，不僅能單獨(dú)使用，還可與上位計(jì)算機(jī)聯(lián)網(wǎng)構(gòu)成集散型監(jiān)控系統(tǒng)。銘宇自控上位機(jī)可根據(jù)各現(xiàn)場送來的料位數(shù)據(jù)，集中管理；顯示、打印各料倉的全部資料，隨時(shí)為企業(yè)提供必要信息，大大提高了企業(yè)的計(jì)量科學(xué)管理水平和經(jīng)濟(jì)效益。[詳細(xì)]

  2018-10-05 10:00

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• 沼氣分析儀的應(yīng)用與維護(hù)

  沼氣分析儀的應(yīng)用與維護(hù)[詳細(xì)]

  2024-09-13 09:04

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• 熱導(dǎo)檢測器的應(yīng)用與維護(hù)

  熱導(dǎo)檢測器的應(yīng)用與維護(hù)[詳細(xì)]

  2024-09-12 23:55

  應(yīng)用文章

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• 下載E+H液位計(jì)分類大全

  下載E+H恩德斯豪斯液位計(jì)分類大全1、浮力方式浮力方式類型的液位計(jì)均有一個(gè)浮子（浮球或浮筒），浮子在靜止液面上處于平衡狀態(tài)，當(dāng)液面變化時(shí)浮子隨液面發(fā)生位移，電子元件以一定的方式獲取浮子的位移，進(jìn)而轉(zhuǎn)換為液位的變化。由于電子元件接收浮子位移方式的不同，浮力方式液位計(jì)分為磁翻板液位計(jì)、浮筒液位計(jì)、磁致伸縮液位計(jì)等。1.1磁翻板液位計(jì)。磁翻板液位計(jì)由磁性浮子、圓柱型容器、標(biāo)尺和變送器組成。浮子在容器內(nèi)隨液面移動(dòng)，浮子的磁場作用在傳感器上，傳感器是一條封在不銹鋼管內(nèi)與被測液位等長的膠木條，上面間隔焊有眾多的干簧管，當(dāng)干簧管與浮子在同一高度時(shí)閉合，否則開路，變送器接收干簧管所連接電阻的多少產(chǎn)生電流信號(hào)，轉(zhuǎn)換為液面高度。浮子移動(dòng)在標(biāo)尺上顯示為紅、白珠的翻轉(zhuǎn)，指示液位。1.2浮筒液位計(jì)。浮筒液位計(jì)有浮筒、彈簧、磁鋼室和指示器組成，根據(jù)阿基米德定律和磁耦合原理設(shè)計(jì)。浮筒的位移導(dǎo)致磁鋼室磁場發(fā)生變化，指示器內(nèi)的磁傳感器極ng確測量周圍磁場變化，與液位對(duì)應(yīng)從而反映出液位變化。1.3磁致伸縮液位計(jì)。磁致伸縮液位計(jì)主要由浮子、波導(dǎo)管和變送器組成。變送器的電子部件產(chǎn)生低壓電流脈沖，開始計(jì)時(shí)，產(chǎn)生磁場沿磁致伸縮線向下傳播，浮子隨著液位變化沿測量竿移動(dòng)，浮子內(nèi)磁鐵也產(chǎn)生磁場，兩個(gè)磁場相遇，磁致伸縮線扭曲形成扭應(yīng)力波脈沖，脈沖速度已知，計(jì)算脈沖傳播時(shí)間即對(duì)應(yīng)液位極ng確變化。2、壓力方式壓力方式的液位計(jì)即通過其測壓元件測量液體壓力的方式反映液面高度的液位計(jì)。一般由變送器、傳感器和壓力探頭組成。傳感器是內(nèi)置毛細(xì)軟管的特殊金屬桿或電纜，探頭構(gòu)造是一個(gè)不銹鋼筒芯，底部帶有膜片。探頭侵入液體中，測試受到的液體靜壓與實(shí)際大氣壓之差，壓差隨液位變化，電子元件接收壓差信號(hào)反映液位的變化。根據(jù)傳感器材質(zhì)的不同分為桿式和纜式兩種。2.1桿式壓力液位計(jì)。桿式壓力液位計(jì)的傳感器是金屬桿。其一般技術(shù)參數(shù)為，測量范圍一般0~5m，輸出信號(hào)：（4~20）mA，測量精度一般0.5%。2.2纜式壓力液位計(jì)。由于傳感器是電纜，可以彎曲，方便搬運(yùn)和裝卸，所以纜式壓力液位計(jì)的量程可以很大，有100m，甚至300m，其測量精度一般為1.0%。2.3差壓液位計(jì)。差壓液位計(jì)也是通過檢測壓力差來測量液位的。液位計(jì)有氣相和液相兩個(gè)取壓口。氣相取壓點(diǎn)處壓力為設(shè)備內(nèi)氣相壓力；液相取壓點(diǎn)處壓力除受氣相壓力作用外，還受液柱靜壓力的作用，液相和氣相壓力之差，就是液柱所產(chǎn)生的靜壓力，轉(zhuǎn)換成液面高度。3、導(dǎo)電方式導(dǎo)電方式的液位計(jì)基于電學(xué)原理，通過測量電容或電阻的方式測量液位。這類液位計(jì)主要包括電容液位計(jì)、射頻導(dǎo)納液位計(jì)、電阻液位計(jì)。3.1電容液位計(jì)。電容液位計(jì)采用測量電容的變化來測量液面的高低。由一根金屬棒插入液體容器內(nèi)，金屬棒作為電容的一個(gè)極，容器壁作為電容的另一極。兩電極間的介質(zhì)即為液體及其上面的氣體。由于液體的介電常數(shù)和液面上氣體的介電常數(shù)不同，通過兩電極間的電容量的變化來測量液位的高低。3.2射頻導(dǎo)納液位計(jì)。射頻導(dǎo)納液位計(jì)是電容液位計(jì)的升級(jí)版，可以理解為用高頻無線電波測量導(dǎo)納，。儀表工作時(shí)，儀表的傳感器與灌壁及被測介質(zhì)形成導(dǎo)納值，物位變化時(shí)，導(dǎo)納值相應(yīng)變化，電路單元將測量導(dǎo)納值轉(zhuǎn)換成物位信號(hào)輸出，實(shí)現(xiàn)液位的測量。3.3電阻液位計(jì)。電阻液位計(jì)通過電極接觸導(dǎo)電液體，在電極間施加低頻電壓，當(dāng)電極從斷開狀態(tài)變?yōu)榇右后w電阻時(shí)，形成導(dǎo)電通路，也就是用液體的導(dǎo)電性來測量液位，用多個(gè)定點(diǎn)的測量電阻就可以進(jìn)行水位的連續(xù)測量。4、反射方式目前反射方式的液位計(jì)主要有雷達(dá)液位計(jì)和超聲波液位計(jì)兩種。它們的原理基本相同，都是通過發(fā)射-反射-接收超聲波或電磁波（雷達(dá)波）的方式測量液面高度的。4.1雷達(dá)液位計(jì)。雷達(dá)液位計(jì)的天線發(fā)射出電磁波，這些波經(jīng)被測對(duì)象表面反射后，再被天線接收，電磁波從發(fā)射到接收的時(shí)間與到液面的距離成正比，雷達(dá)液位計(jì)記錄脈沖波經(jīng)歷的時(shí)間，而電磁波的傳輸速度為常數(shù)，則可算出液面到雷達(dá)天線的距離，從而計(jì)算出液面的液位。4.2超聲波液位計(jì)。超聲波液位計(jì)是由微處理器控制的數(shù)字物位儀表。在測量中脈沖超聲波由傳感器（換能器）發(fā)出，聲波經(jīng)液體表面反射后被同一傳感器接收，轉(zhuǎn)換成電信號(hào)。并由聲波的發(fā)射和接收之間的時(shí)間來計(jì)算傳感器到被測液體的距離。5、結(jié)語[詳細(xì)]

  2018-09-04 10:01

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• E+H液位計(jì)技術(shù)手冊FMB70-AAA1C321GCAA

  E+H靜壓液位測量液位計(jì)FMB70-AAA1C321GCAA，運(yùn)用在液體的液位、體積和質(zhì)量測量和所有過程領(lǐng)域、過程測量技術(shù)、制藥行業(yè)和食品行業(yè)中液體和漿料的靜壓測量。主要特性如下：液體中的液位，體積或質(zhì)量測量液體，氣體和糊狀介質(zhì)在所有工藝過程中的壓力測量工程，過程測量技術(shù)，制藥和食品行業(yè)重復(fù)性好，長期穩(wěn)定性好通過獨(dú)特的冷凝水CONTITE測量，Zda限度地提高工廠安全性細(xì)胞高參考精度高達(dá)0.075％用于根據(jù)SIL3認(rèn)證的過程等級(jí)和壓力監(jiān)控TV南德意志集團(tuán)的IEC61508運(yùn)行期間的高度安全性，由于功能監(jiān)控測量電池到電子設(shè)備通過HistoROM/M-DAT保證易于電子更換差壓，流體靜力和壓力的統(tǒng)一平臺(tái)（DeltabarS-DeltapilotS-CerabarS）實(shí)用的用戶導(dǎo)航，可快速方便的調(diào)試廣泛的診斷功能用于飲用水[詳細(xì)]

  2018-11-22 10:00

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• LFP Cubic通用型導(dǎo)波雷達(dá)液位計(jì)選型手冊

  LELI樂利系LOLLY集團(tuán)在ZG香港注冊的投資公司樂利（ZG）有限公司聯(lián)合相關(guān)資本于2012年8月在ZG上海設(shè)立，依托LOLLY集團(tuán)成熟的供應(yīng)鏈體系、專業(yè)背景及資本后盾，向ZG地區(qū)客戶提供數(shù)百萬種MRO工業(yè)品，儀器儀表產(chǎn)品，并發(fā)展上述部分產(chǎn)品成套業(yè)務(wù)專業(yè)MRO服務(wù)商（工業(yè)品在線采購平臺(tái)）是樂利ZG有限公司聯(lián)合眾多國際知名品牌產(chǎn)品ZG**dai理商共同組建的一個(gè)工業(yè)品在線采購平臺(tái)。通過B2B網(wǎng)絡(luò)技術(shù)實(shí)現(xiàn)商品查詢，詢價(jià)，報(bào)價(jià)，訂貨，分銷，數(shù)據(jù)同步和為聯(lián)盟商友開通分網(wǎng)站等功能。集合優(yōu)勢產(chǎn)品資源，致力于和廣大MRO分銷商及知名品牌廠家結(jié)為戰(zhàn)略聯(lián)盟。[詳細(xì)]

  2018-10-09 10:00

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• 德國E+H雷達(dá)物位儀表

  德國E+H雷達(dá)物位儀表一、供應(yīng)E+H物位儀表：1、E+H雷達(dá)物位儀表:非接觸式測量。適用于各種惡劣工況（例如有毒高侵蝕性），且不受被測介質(zhì)物理特性變化影響的外部測量。型號(hào)有：FMR230,FMR231，F(xiàn)MR240，F(xiàn)MR244，F(xiàn)MR245,FMR250，F(xiàn)MR530，F(xiàn)MR531，F(xiàn)MR532，F(xiàn)MR533。2、E+H導(dǎo)波雷達(dá)物位儀表：接觸式測量。與被測介質(zhì)的物理特性變化無關(guān)。耐溫達(dá)150度，耐壓達(dá)40bar。型號(hào)有：FMP40,FMP41C,FMP45。3、E+H超聲波物位計(jì):非接觸式測量。適合各種液體和固體，同樣包括侵蝕性介質(zhì)及變介電常數(shù)介質(zhì)。耐溫達(dá)150度，耐壓達(dá)3bar。型號(hào)有：FMU230/231,FDU91,FDU92,FDU93,FDU95,FDU96,FMU40/41,FMU42,FMU43。FMU860/FMU861/FMU862,FDU80/FDU81/FDU82***。德國E+H雷達(dá)物位儀表4、E+H液體音叉開關(guān)：無需標(biāo)定和維護(hù)。適用于所有液體，亦適用于粘結(jié)、攪拌及含氣泡的介質(zhì)，與被測介質(zhì)的介電常數(shù)無關(guān)。耐溫達(dá)150度，耐壓達(dá)64bar.型號(hào)有:FTL50,FTL51,FTL51C,FTL50H,FTL51H,FTL70,FTL71.FTL20,FTL260。5、E+H固體音叉開關(guān)：無需標(biāo)定和維護(hù)。適用于顆粒直徑小于10mm的顆粒及粉塵，耐溫高達(dá)150度，耐壓達(dá)16bar。型號(hào)有：FTM50,FTM51,FTM52,FTM30/31/32（D/S）,FTM20/21,FTM2606、E+H靜壓式物位計(jì)：智能化壓力傳感，適用于液體、漿料、泥漿，與泡沫及介電常數(shù)無關(guān)。耐溫高達(dá)100度，耐壓達(dá)4bar。型號(hào)有：DB50,DB50L,DB51,DB52,DB53，F(xiàn)MX167，F(xiàn)MX165，F(xiàn)TC51，F(xiàn)TC52，F(xiàn)TC53。7、E+H電容式物位計(jì)及開關(guān)：適合于各種液體，同樣適用于侵蝕性介質(zhì)和粘結(jié)介質(zhì)。耐溫達(dá)400讀，耐壓達(dá)500bar。型號(hào)有：FMI51，F(xiàn)MI52,FTC51/52/53,FTC470Z/471Z,FTC968/968Z,DC11,FTC260/262。8、E+H阻旋式物位開關(guān)：接觸式物位開關(guān)。低成本限位測量方法之一，適用于粉狀和粒狀介質(zhì)。耐溫達(dá)80度，耐壓達(dá)+0.8bar。型號(hào)有：FTE30/31。9、E+H重錘式物位計(jì)：結(jié)構(gòu)堅(jiān)固。尤其適用于高的容器（高達(dá)70m），不受灰塵影響。耐溫達(dá)150度，耐壓達(dá)2bar。型號(hào)有：FMM50。德國E+H雷達(dá)物位儀表[詳細(xì)]

  2024-09-27 15:16

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