寶德8072型容積式流量變送器,BURKERT8032型變送器
BURKERT變送器均不具上述優(yōu)點(diǎn)即將被兩線制變送器所取代，從國外的動(dòng)態(tài)及變送器芯片供求量即可略知斑，電流變送器在使用時(shí)要安裝在現(xiàn)場設(shè)備的動(dòng)力線上，而以單片機(jī)為核心的監(jiān)測系統(tǒng)則位于較遠(yuǎn)離設(shè)備現(xiàn)場的監(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)。BURKERT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。BURKERT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。
180729 2080-A2-10,0-EF-VD-GM83-H-A-00-AG01                                     
181203 MK01-12-02-05-02-00-00-00-00-00-00-0                                    
181367 6144-C00,6FFPSFB05-0-024/BA-AA     * JB17+JF80                          
181390 MP11-11-02PG0-BBPA-0000-TA82-FM14-0* AS05                               
181391 MP11-11-08PG0-BBPA-0000-TA82-FM14-0* AS05                               
181531 2835-A-02,0-AA-MS-GM83-024/DC-16                                        
181533 2835-A-04,0-AA-VA-NM83-024/DC-16                                        
181534 2835-A-04,0-AA-MS-NM84-024/DC-16                                        
181539 2835-A-04,0-AA-VA-NM84-024/DC-16                                        
181541 2835-A-06,0-AA-MS-GM83-024/DC-16                                        
181543 2835-A-06,0-AA-VA-GM83-024/DC-16                   
：\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
寶德8072型容積式流量變送器,BURKERT8032型變送器                   
181544 2835-A-06,0-AA-MS-GM84-024/DC-16                                        
181545 2835-A-06,0-AA-VA-GM84-024/DC-16                                        
181546 2835-A-06,0-AA-MS-NM83-024/DC-16                                        
181548 2835-A-06,0-AA-VA-NM83-024/DC-16                                        
181550 2835-A-06,0-AA-MS-NM84-024/DC-16                                        
181551 2835-A-06,0-AA-VA-NM84-024/DC-16                                        
181552 2835-A-04,0-AA-MS-NM83-024/DC-16                                        
181553 2835-A-02,0-AA-VA-GM83-024/DC-16                                        
181554 AC07-U2-2-03AA                     * JB07+NA38                          
181555 2835-A-02,0-AA-MS-NM83-024/DC-16                                        
181556 AC07-U2-2-10AA                     * JB07+NA38                          
181557 AC07-U2-2-09AA                     * JB07+NA38                          
181558 2835-A-02,0-AA-VA-NM83-024/DC-16                                        
181559 2835-A-03,0-AA-MS-GM83-024/DC-16                                        
181560 2835-A-03,0-AA-VA-GM83-024/DC-16                                        
181561 2835-A-03,0-AA-MS-NM83-024/DC-16                                        
181562 2835-A-03,0-AA-VA-NM83-024/DC-16                                        
181563 2835-A-04,0-AA-MS-GM83-024/DC-16                                        
181592 2835-A-04,0-AA-VA-GM83-024/DC-16                                        
181593 2835-A-04,0-AA-MS-GM84-024/DC-16                                        
181594 2835-A-04,0-AA-VA-GM84-024/DC-16                                        
181595 2835-A-08,0-AA-MS-GM84-024/DC-16