德國BURKERT容積式流量變送器價(jià)格/BURKERT流量變送器
德國BURKERT容積式流量變送器在使用時(shí)要安裝在現(xiàn)場(chǎng)設(shè)備的動(dòng)力線上，而以單片機(jī)為核心的監(jiān)測(cè)系統(tǒng)則位于較遠(yuǎn)離設(shè)備現(xiàn)場(chǎng)的監(jiān)控室里，兩者般相距幾十到幾百米甚更遠(yuǎn)。設(shè)備現(xiàn)場(chǎng)的環(huán)境較為惡劣，強(qiáng)電信號(hào)會(huì)產(chǎn)生各種電磁干擾，雷電感應(yīng)會(huì)產(chǎn)生強(qiáng)浪涌脈沖，在這種情況下，單片機(jī)應(yīng)用系統(tǒng)中遇到的個(gè)棘手問題就是如何在惡劣環(huán)境下遠(yuǎn)距離可靠地傳送微小信號(hào)。
德國BURKERT容積式流量變送器的輸出為4～20 mA，通過250 Ω的精密電阻轉(zhuǎn)換成1～5 V或2-10V的模擬電壓信號(hào).轉(zhuǎn)換成數(shù)字信號(hào)有多種方法，如果系統(tǒng)是在環(huán)境較為惡劣的工業(yè)現(xiàn)場(chǎng)長期使用，因此需考慮硬件系統(tǒng)工作的安全性和可靠性。系統(tǒng)的輸入模塊采用壓頻轉(zhuǎn)換器件LM２31將模擬電壓信號(hào)轉(zhuǎn)換成頻率信號(hào)，用光電耦合器件TL117進(jìn)行模擬量與數(shù)字量的隔離。同時(shí)模擬信號(hào)處理電路與數(shù)字信號(hào)處理電路分別使用兩組獨(dú)立的電源，模擬地與數(shù)字地相互分開，這樣可提高系統(tǒng)工作的安全性。利用壓頻轉(zhuǎn)換器件LM231也有定的抗高頻干擾的作用。在單片機(jī)控制的許多應(yīng)用場(chǎng)合,都要使用變送器來將單片機(jī)不能直接測(cè)量的信號(hào)轉(zhuǎn)換成單片機(jī)可以處理的電模擬信號(hào)，如電流變送器,壓力變送器、溫度變送器、流量變送器等。
178580 3236-44D70-PN-VH-TC43-AE-D44-D44   * NO14+NO22                          
178581 3236-45C70-AB-VH-SODF-AE-D44-D44   * NC34+NO14+NO22                     
178601 2000-B-2-13,0-EE-RG-GM84-B-C       * AF12                               
178602 2000-B-2-13,0-EE-RG-GM84-D-C       * AF12                               
178603 2000-B-2-13,0-EE-VA-GM84-C-C       * AF12                               
178604 2000-B-2-13,0-EE-VA-GM84-D-C       * AF12                               
178605 2000-A-2-13,0-EE-VA-GM84-D-C       * AF12                               
178606 2000-A-2-13,0-EE-VA-GM84-C-C       * AF12                               
178607 2000-A-2-13,0-EE-RG-GM84-D-C       * AF12                               
178608 2000-A-2-13,0-EE-RG-GM84-B-C       * AF12                               
178609 2000-B-2-13,0-EE-VA-GM83-D-C                                            
178610 2000-B-2-13,0-EE-RG-GM83-D-C                                            
178612 2000-A-2-13,0-EE-VA-GM83-D-C                                            
178613 2000-A-2-13,0-EE-RG-GM83-D-C                                            
178614 2000-A-2-13,0-EE-RG-GM83-B-C                                            
178663 2000-A-2-20,0-EE-VA-GM85-D-E       * AF12       
    ：\39526590\39529839/39529830轉(zhuǎn)8005或者8002
//
\39529831\39529839\39529839-8007或者8008
/
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；單榮兵/余娟 
德國BURKERT容積式流量變送器價(jià)格/BURKERT流量變送器                 
178664 2000-A-2-20,0-EE-VA-GM85-C-E       * AF12                               
178665 2000-A-2-20,0-EE-RG-GM85-D-E       * AF12                               
178666 2000-A-2-20,0-EE-RG-GM85-B-E       * AF12                               
178667 2000-A-2-25,0-EE-VA-GM86-D-E       * AF12                               
178668 V240-A06,0FFMSGM82-V-A-LA-U3                                            
178669 V240-A06,0FFMSGM82-V-C-LA-U3                                            
178670 V240-A06,0FFMSGM83-V-A-LA-U3                                            
178671 V240-A06,0FFMSGM83-V-C-LA-U3                                            
178672 V240-A06,0FFVAGM82-V-A-LA-U3                                            
178673 V240-A06,0FFVAGM82-V-C-LA-U3                                            
178674 2000-A-2-25,0-EE-VA-GM86-C-E       * AF12                               
178675 2000-A-2-25,0-EE-RG-GM86-D-E       * AF12                               
178676 2000-A-2-25,0-EE-RG-GM86-B-E       * AF12                               
178677 2000-A-2-20,0-EE-VA-GM85-D-D       * AF12                               
178678 2000-A-2-20,0-EE-VA-GM85-C-D       * AF12                               
178679 2000-A-2-20,0-EE-RG-GM85-D-D       * AF12                               
178680 2000-A-2-20,0-EE-RG-GM85-B-D       * AF12                               
178681 2000-A-2-13,0-EE-VA-GM84-D-D       * AF12                               
178682 2000-A-2-13,0-EE-VA-GM84-C-D       * AF12                               
178683 2000-A-2-13,0-EE-RG-GM84-D-D       * AF12                               
178684 2000-A-2-13,0-EE-RG-GM84-B-D       * AF12                               
178685 2000-B-2-20,0-EE-VA-GM85-D-D       * AF12                               
178686 2000-B-2-20,0-EE-VA-GM85-C-D       * AF12                               
178687 2000-B-2-20,0-EE-RG-GM85-B-D       * AF12                               
178688 2000-B-2-13,0-EE-VA-GM84-D-D       * AF12                               
178689 2000-B-2-13,0-EE-VA-GM84-C-D       * AF12                               
178690 2000-B-2-13,0-EE-RG-GM84-D-D       * AF12                               
178691 2000-B-2-13,0-EE-RG-GM84-B-D       * AF12                               
178692 2000-A-2-40,0-EE-VA-GM88-D-F       * AF12