国产三线在线,亚洲久草在线视频,9久re热视频在线精品,久久久xxx

6SL3211-0AB17-5BB0 交換機(jī)
6SL3211-0AB17-5BB0 交換機(jī)
產(chǎn)品價格:¥5464(人民幣)
  • 規(guī)格:完善
  • 發(fā)貨地:福建廈門市
  • 品牌:
  • 最小起訂量:1個
  • 誠信商家
    會員級別:鉆石會員
    認(rèn)證類型:企業(yè)認(rèn)證
    企業(yè)證件:通過認(rèn)證

    商鋪名稱:廈門億佳天辰貿(mào)易有限公司

    聯(lián)系人:張工(先生)

    聯(lián)系手機(jī):

    固定電話:

    企業(yè)郵箱:1554241055@qq.com

    聯(lián)系地址:

    郵編:

    聯(lián)系我時,請說是在線纜網(wǎng)上看到的,謝謝!

    商品詳情
      我們新研制出一種用于紙漿白度測定的智能白度儀,該儀表采用西門子公司生產(chǎn)的S7-224 CPU結(jié)合軟件功能進(jìn)行數(shù)據(jù)處理,具有較好的可靠性、重復(fù)性、精確度和穩(wěn)定性。為了使其能與其它智能設(shè)備之間實(shí)現(xiàn)通信,我們將通過現(xiàn)場總線技術(shù)把它連接到網(wǎng)絡(luò)中,使它成為造紙廠現(xiàn)場總線控制系統(tǒng)的一部分。

      2.現(xiàn)場總線的選擇

        2.1現(xiàn)場總線技術(shù)的選擇

        現(xiàn)場總線集控制技術(shù)、計算機(jī)技術(shù)、通信技術(shù)于一體,是當(dāng)今自動化領(lǐng)域技術(shù)發(fā)展的熱點(diǎn)之一。這項(xiàng)技術(shù)可將多個智能控制儀表連接成網(wǎng)絡(luò)系統(tǒng),實(shí)現(xiàn)分布式計算機(jī)控制,提高檢測和控制精度,改善系統(tǒng)的動態(tài)響應(yīng)速度,提高系統(tǒng)安全性,從而得到了廣泛的應(yīng)用。

        近年來,幾種有影響的現(xiàn)場總線技術(shù)已在一些特定的應(yīng)用領(lǐng)域里顯示出各自的優(yōu)勢。在此,我們選定了現(xiàn)為德國和歐洲標(biāo)準(zhǔn)的PROFIBUS(Process Fieldbus)現(xiàn)場總線。一方面由于它是目前數(shù)據(jù)傳輸率快的一種現(xiàn)場總線,傳輸率高可達(dá)12Mbps,另一方面它能夠很好的與西門子的傳動設(shè)備相配合,并與西門子PLC(Programmable Logic Controller)結(jié)合緊密且組態(tài)簡便。

        2.2 PROFIBUS現(xiàn)場總線簡介

        參照ISO/OSI參考模型,PROFIBUS現(xiàn)場總線只包含物理層、數(shù)據(jù)鏈路層和應(yīng)用層。由PROFIBUS-DP,PROFIBUS-FMS, PROFIBUS-PA組成PROFIBUS系列。

        PROFIBUS-DP:經(jīng)過優(yōu)化的高速、廉價的通信連接,專為自動控制系統(tǒng)和設(shè)備級分散I/O之間通信設(shè)計,使用PROFIBUS-DP模塊可取代價格昂貴的24V或0~20mA并行信號線。用于分布式控制系統(tǒng)的高速數(shù)據(jù)傳輸。

        PROFIBUS-FMS :解決車間級通用性通信任務(wù),提供大量的通信服務(wù),完成中等傳輸速度的循環(huán)和非循環(huán)通信任務(wù),用于紡織工業(yè)、樓宇自動化、電氣傳動、傳感器和執(zhí)行器、可編程序控制器、低壓開關(guān)設(shè)備等一般自動化控制。

        PROFIBUS-PA專為過程自動化設(shè)計,標(biāo)準(zhǔn)的本質(zhì)安全的傳輸技術(shù),實(shí)現(xiàn)了IEC1158-2中規(guī)定的通信規(guī)程,用于對安全性要求高的場合及由總線供電的站點(diǎn)。

        本設(shè)計中采用的是PROFIBUS-DP標(biāo)準(zhǔn),PROFIBUS-DP(或DP標(biāo)準(zhǔn))是由歐洲標(biāo)準(zhǔn)EN50170定義的一種遠(yuǎn)程I/O通信協(xié)議。DP表示分布式外圍設(shè)備,亦即遠(yuǎn)程I/O。PROFIBUS-DP還用到了應(yīng)用層接口(ALI),ALI將過程對象轉(zhuǎn)換為通信對象。


      IDEC IZBARL IBRC-6012R RELAY BARRIER 16VDC 14mA 250VAC

      G79601 Shimadzu SCL-10AVP HPLC System Controller

      Enlarge
      Shimadzu HPLC System: Freight/ Ground Shipping Possible

      SHIMADZU VP HPLC DETECTOR AUTOSAMPLER CHROMATOGRAPH

      Shimadzu SCL-10A VP System Controller

      Shimadzu SPD-M10Avp HPLC UV/VIS Diode Array DAD

      Shimadzu UV-1201 UV-Vis Spectrophotomet?er UV1201

      Shimadzu SIL-10A XL HPLC Autosampler 

      Shimadzu HPLC System: Freight/ Ground Shipping Possible

      Shimadzu 10A & VP Series DAD HPLC System

      Shimadzu SCL-10A VP System Controller S-R

      Shimadzu UV-Visable Recording Spectrophotomet?er UV160U

      Shimadzu SPD-10A(vp) Prep Flow Cell

      Shimadzu Liquid Chromatograph LC-4A 115VAC 10A 50/60 HZ

      Shimadzu RF-540 Spectrofluoroph?otometer & DR-3 Recorder

      Shimadzu SCL-10A HPLC System Controller Lab Waters S-R

      SHIMADZU MODEL LC-6A LIQUID CHROMATOGRAPH Unit Used

      Shimadzu UV-260 UV/VIS Doublebeam-Spec?trometer UV-260

      Shimadzu LC10-AT VP HPLC Pump Liquid Chromatograph

      Shimadzu LC10-AT VP HPLC Pump Liquid Chromatograph

      Shimadzu TMP2003LMC turbo pump
      turbo pump, AMAT pump,

      SHIMADZU MODEL LC-6A LIQUID CHROMATOGRAPH 

      Shimadzu SCL-10A System Controller HPLC VP SCL10A LC UV

      SHIMADZU UV1601 SPECTROPHOTOMET?ER TESTED

      SHIMADZU LC-600 DUAL PUMP LIQUID CHROMATOGRAPH

      Shimadzu Chromatograph LC-10AD CDD-6A SCL-10A SIL-10A

      SHIMADZU GC17AAF WITH FID DETECTOR SOLD AS IS

      Shimadzu SIL-10A Syringe Auto Injector HPLC Cooler Rack

      Shimadzu SCL-10A System Controller
      Expedited shipping available

      Shimadzu Total Organic Carbon Analyzer TOC-4000

      MOUNTING BRACKET FOR SHIMADZU AOC AUTOSAMPLER TRAY

      Shimadzu FRC-10A Fraction Collector S-R

      Shimadzu LC-10AD vp SCL-10A vp FCV-14AH Subcontrol LOT

      Shimadzu Flame Photometric Detector 

      Shimadzu AA680U Atomic Absorption Flame Emission Spec

      Shimadzu SIL-10A AutoInjector Autosampler LC SCL 10A VP

      SHIMADZU SCL-10A SYSTEM CONTROLLER # 3219

      Shimadzu Syringe Pump SIL-10A Auto Injector HPLC LC VP 

      Shimadzu SCL 10-A System Controller S-R

      G79602 Shimadzu LC-10ADVP HPLC Liquid Chromatograph

      Enlarge
      Shimadzu FCV-10-AL-VP Low Pressure Gradient Valve S-R

      Shimadzu UV-160U UV-VIS Recording Spectrophotomet?er

      G79603 Shimadzu DGU-14A HPLC Degasser

      Enlarge
      Shimadzu VP Series HPLC

      Shimadzu UV-2101PC Scanning Spectrophotomet?er UV2101PC
      Includes CPS-260 Cell Positioner

      G79604 Shimadzu 228-34736-91 Reservoir Tray

      Enlarge
      Shimadzu LC10-AT VP HPLC Pump Liquid Chromatograph

      SHIMADZU SCL-6B System Controller Chromatograph HPLC

      Shimadzu AA680U Atomic Absorption Flame Emission Spec?

      Enlarge
      SHIMADZU UV-VISIBLE RECORDING SPECTROPHOTOMET?ER

      Shimadzu IR-460 DR-11 Cat No 204-08700-01 U-S

      Shimadzu LC10-AT VP HPLC Pump Liquid Chromatograph

      Shimadzu SIL-10AP AutoInjector SIL-10A Autosampler LC 

      Shimadzu Auto Injector SIL-6B w/ SCL-6B System Control

      SHIMADZU TOC-5000 Total Organic Carbon Analyzer 
      with Data System-- Tested-Working?-Guaranteed!
      One-day shipping available

      Enlarge
      Shimadzu LC-10ADvp HPLC Pump

      Shimadzu RF-535 Fluorescence Detector HPLC Monitor 

      SHIMADZU MODEL LC-6A LIQUID CHROMATOGRAPH 

      Shimadzu RF-551 Spectrofluorome??tric Detector

      Shimadzu SIL-10AXL autoinjector,sy?ringe pump, FCV-10AL

      Shimadzu Spectrophotomet?er DR-15 RF-5000u 

      SHIMADZU UV-1601 PC UV-VISIBLE SPECTROPHOTOMET?ER

      Shimadzu GC-14A GAS CHROMATOGRAPH USED SPL FID install

      Shimadzu HPLC HDU-1 Liquid Chromatograph

      SHIMADZU RACK FOR SIL-10ADVP (AND OTHER) AUTOSAMPLER

      Shimadzu FCV-10AL Degasser Pump Unit Used

      Shimadzu UV160U Recording Spectrophotomet?er UV-160U 

      Shimadzu LC10-AT VP HPLC Pump Liquid Chromatograph

      SHIMADZU XRD-6000 X-RAY DIFFRACTOMETER NICE

      SHIMADZU UV-160 UV VISIBLE RECORDING SPECTROPHOTOMET?ER

      Shimadzu CTO -6A Column Oven HPLC Lab Use

      Shimadzu SCL 10A HPLC System Controller

      Shimadzu SIL-10A HPLC Auto Injector Sampler Cooler Rack

      SHIMADZU SPD-6AV UV-VIS SPECTROPHOTOMET?RIC DETECTOR

      SHIMADZU LC-600 LIQUID CHROMATOGRAPH

      SHIMADZU UV-1601 PC SPECTROPHOTOMET?ER W/ CPS 240A

      Nice Shimadzu CTO-10ASVP CTO-20AS VP Column Oven
      Make me an OFFER-I have other Shimadzu Equipment listed

      Enlarge
      Shimadzu Visable Recording Spectrophotomet?er UV-160U

      SHIMADZU RF-530 SPECTROFLUOROPH?OTOMETER MONITOR 

      Shimadzu HPLC cooler cooling unit sample

      GC Shimadzu Split/Splitless Liner 5 pk Restek 20956-213

      Shimadzu LC-10AT Liquid Chromatograph HPLC Flow Pump

      SHIMADZU AUTO INJECTOR MODEL# ADC-17!

      Shimadzu PC-12D-A Assy Board, 222-00978-92, ST3-15-8

      Shimadzu TOC-5000A Total Organic Carbon Analyzer

      ?Shimadzu RF-1501 Spectrophotomet?er Micro oly wil█Fluor

      Shimadzu Centrifugal Particle Size Analyzer SA-CP3

      Shimadzu GC-14A All Purpose Gas Chromatograph System

      Shimadzu Sipper 160 With Accessories And Carry Case

      Shimadzu FRC-10A Fraction Collector for HPLC

      Shimadzu TCC-240A Temperature Controller

      LOT OF 2 SHIMADZU CONTROLLERS MODEL# CFC-14PM!

      Shimadzu ELECTROCHEMICAL DETECTOR HPLC L-ECD-6A 

      Shimadzu Liquid Chromatography Pump Model LC-6A

      Shimadzu RF-551 PC Spectrofluorome?tric HPLC Detector

      Shimadzu RF-535 Fluorescence Detector HPLC 

      RF5301PC Shimadzu Spectrofluoroph?otometer 381 hours use
      SAVE $14,000 Includes Computer, Flow Thru HPLC cell

      Shimadzu HPLC degasser degassing unit degas DGU-3A

      Shimadzu RF-535 Lab HPLC Monitor Fluorescence Detector

      Shimadzu SCL-10A System Controller

      SHIMADZU SPECTROPHOTOMET?ER UV-160



      Altex Shimadzu 901 HPLC Chromatograph Integrator

      Shimadzu SIL-HTa LC Autosampler SILHTa SILHTc HTc HT

      Shimadzu UV-160 Spectrophotomet?er CPS-260 Controller Z 

      Shimadzu SIL-2A AutoSampler SIL-2AS Control Unit Used

      SHIMADZU LC-600 Dual Pump HPLC Liquid Chromatograph

      Shimadzu UV-260 UV-Visible Recording Spectrophotomet?er

      Shimadzu SCL-6B System Controller

      Shimadzu SIL-10AF Autosampler

      SHIMADZU SCL-6A DETECTOR WITH AUTO INJECTOR SIL-6A

      Shimadzu SPD 6A UV Spectrophotomet?ric Detector HPLC UV

      Shimadzu GC Autoinjector&Vi?al Carousel AOC 20i,20s EUC


    在線詢盤/留言
  • 0571-87774297  
    主站蜘蛛池模板: 泽普县| 镇雄县| 岑溪市| 五家渠市| 沂源县| 兴宁市| 类乌齐县| 晋宁县| 海丰县| 鞍山市| 于田县| 怀集县| 清水河县| 广丰县| 万年县| 卓尼县| 盖州市| 定安县| 三台县| 温宿县| 连山| 天津市| 鱼台县| 潮州市| 双峰县| 玉林市| 清新县| 定安县| 迁安市| 平凉市| 宜州市| 曲松县| 三亚市| 称多县| 潜山县| 大冶市| 清新县| 新郑市| 阿巴嘎旗| 兖州市| 固阳县|