產(chǎn)品詳情
HART通訊協(xié)議HART(Highway Addressable Remote Transducer)可尋址遠(yuǎn)程傳感器高速通道的開放通信協(xié)議是美國Rosement公司推出的一種用于現(xiàn)場智能儀表和控制室設(shè)備之間的通信協(xié)議。 HART裝置提供具有相對低的帶寬適度響應(yīng)時間的通信經(jīng)過多年的發(fā)展HART技術(shù)在國內(nèi)外已經(jīng)十分成熟并已成為全球智能儀表的工業(yè)標(biāo)準(zhǔn)。 HART協(xié)議采用基于Bell202標(biāo)準(zhǔn)的FSK頻移鍵控信號在低頻的420mA模擬信號上疊加幅度為0.5mA的音頻數(shù)字信號進(jìn)行雙向數(shù)字通訊數(shù)據(jù)傳輸率為1.2Mbps。由于FSK信號的平均值為0不影響傳送給控制系統(tǒng)模擬信號的大小保證了與現(xiàn)有模擬系統(tǒng)的兼容性。在HART協(xié)議通信中主要的變量和控制信息由420mA傳送在需要的情況下的測量、過程參數(shù)、設(shè)備組態(tài)、校準(zhǔn)、診斷信息通過HART協(xié)議訪問。 HART通信采用的是半雙工的通信方式其特點(diǎn)是在現(xiàn)有模擬信號傳輸線上實(shí)現(xiàn)數(shù)字信號通信屬于模擬系統(tǒng)向數(shù)字系統(tǒng)轉(zhuǎn)變過程中過渡性產(chǎn)品因而在當(dāng)前的過渡時期具有較強(qiáng)的市場競爭能力得到了較快發(fā)展。HART 規(guī)定了一系列命令按命令方式工作。
橫河EJA110A差壓變送器 武漢代理商http://www.sluos.com
橫河EJA110系列差壓變送器
EJA110A-DLS4A-92DA EJA110A-DLH4A-92DA EJA110A-DLS4A-22DC EJA110A-DLH4A-22DC
EJA110A-DLS5A-92DA EJA110A-DLH5A-92DA EJA110A-DLS5A-22DC EJA110A-DLH5A-22DC
EJA110A-DLS4A-92NA EJA110A-DLH4A-92NA EJA110A-DLS4A-22NC EJA110A-DLH4A-22NC
EJA110A-DLS5A-92NA EJA110A-DLH5A-92NA EJA110A-DLS5A-22NC EJA110A-DLH5A-22NC
EJA110A-ELS4A-92DA EJA110A-ELH4A-92DA EJA110A-ELS4A-22DC EJA110A-ELH4A-22DC
EJA110A-ELS5A-92DA EJA110A-ELH5A-92DA EJA110A-ELS5A-22DC EJA110A-ELH5A-22DC
EJA110A-ELS4A-92NA EJA110A-ELH4A-92NA EJA110A-ELS4A-22NC EJA110A-ELH4A-22NC
EJA110A-ELS5A-92NA EJA110A-ELH5A-92NA EJA110A-ELS5A-22NC EJA110A-ELH5A-22NC
EJA110A-DMS4A-92DA EJA110A-DMH4A-92DA EJA110A-DMS4A-22DC EJA110A-DMH4A-22DC
EJA110A-DMS5A-92DA EJA110A-DMH5A-92DA EJA110A-DMS5A-22DC EJA110A-DMH5A-22DC
EJA110A-DMS4A-92NA EJA110A-DMH4A-92NA EJA110A-DMS4A-22NC EJA110A-DMH4A-22NC
EJA110A-DMS5A-92NA EJA110A-DMH5A-92NA EJA110A-DMS5A-22NC EJA110A-DMH5A-22NC
EJA110A-EMS4A-92DA EJA110A-EMH4A-92DA EJA110A-EMS4A-22DC EJA110A-EMH4A-22DC
EJA110A-EMS5A-92DA EJA110A-EMH5A-92DA EJA110A-EMS5A-22DC EJA110A-EMH5A-22DC
EJA110A-EMS4A-92NA EJA110A-EMH4A-92NA EJA110A-EMS4A-22NC EJA110A-EMH4A-22NC
EJA110A-EMS5A-92NA EJA110A-EMH5A-92NA EJA110A-EMS5A-22NC EJA110A-EMH5A-22NC
EJA110A-DHS4A-92DA EJA110A-DHH4A-92DA EJA110A-DHS4A-22DC EJA110A-DHH4A-22DC
EJA110A-DHS5A-92DA EJA110A-DHH5A-92DA EJA110A-DHS5A-22DC EJA110A-DHH5A-22DC
EJA110A-DHS4A-92NA EJA110A-DHH4A-92NA EJA110A-DHS4A-22NC EJA110A-DHH4A-22NC
EJA110A-DHS5A-92NA EJA110A-DHH5A-92NA EJA110A-DHS5A-22NC EJA110A-DHH5A-22NC
EJA110A-EHS4A-92DA EJA110A-EHH4A-92DA EJA110A-EHS4A-22DC EJA110A-EHH4A-22DC
EJA110A-EHS5A-92DA EJA110A-EHH5A-92DA EJA110A-EHS5A-22DC EJA110A-EHH5A-22DC
EJA110A-EHS4A-92NA EJA110A-EHH4A-92NA EJA110A-EHS4A-22NC EJA110A-EHH4A-22NC
EJA110A-EHS5A-92NA EJA110A-EHH5A-92NA EJA110A-EHS5A-22NC EJA110A-EHH5A-22NC
EJA110A-DLS4A-92DN EJA110A-DLH4A-92DN EJA110A-DLS4A-22DN EJA110A-DLH4A-22DN
EJA110A-DLS5A-92DN EJA110A-DLH5A-92DN EJA110A-DLS5A-22DN EJA110A-DLH5A-22DN
EJA110A-DLS4A-92NN EJA110A-DLH4A-92NN EJA110A-DLS4A-22NN EJA110A-DLH4A-22NN
EJA110A-DLS5A-92NN EJA110A-DLH5A-92NN EJA110A-DLS5A-22NN EJA110A-DLH5A-22NN
EJA110A-ELS4A-92DN EJA110A-ELH4A-92DN EJA110A-ELS4A-22DN EJA110A-ELH4A-22DN
EJA110A-ELS5A-92DN EJA110A-ELH5A-92DN EJA110A-ELS5A-22DN EJA110A-ELH5A-22DN
EJA110A-ELS4A-92NN EJA110A-ELH4A-92NN EJA110A-ELS4A-22NN EJA110A-ELH4A-22NN
EJA110A-ELS5A-92NN EJA110A-ELH5A-92NN EJA110A-ELS5A-22NN EJA110A-ELH5A-22NN
EJA110A-DMS4A-92DN EJA110A-DMH4A-92DN EJA110A-DMS4A-22DN EJA110A-DMH4A-22DN
EJA110A-DMS5A-92DN EJA110A-DMH5A-92DN EJA110A-DMS5A-22DN EJA110A-DMH5A-22DN
EJA110A-DMS4A-92NN EJA110A-DMH4A-92NN EJA110A-DMS4A-22NN EJA110A-DMH4A-22NN
EJA110A-DMS5A-92NN EJA110A-DMH5A-92NN EJA110A-DMS5A-22NN EJA110A-DMH5A-22NN
EJA110A-EMS4A-92DN EJA110A-EMH4A-92DN EJA110A-EMS4A-22DN EJA110A-EMH4A-22DN
EJA110A-EMS5A-92DN EJA110A-EMH5A-92DN EJA110A-EMS5A-22DN EJA110A-EMH5A-22DN
EJA110A-EMS4A-92NN EJA110A-EMH4A-92NN EJA110A-EMS4A-22NN EJA110A-EMH4A-22NN
EJA110A-EMS5A-92NN EJA110A-EMH5A-92NN EJA110A-EMS5A-22NN EJA110A-EMH5A-22NN
EJA110A-DHS4A-92DN EJA110A-DHH4A-92DN EJA110A-DHS4A-22DN EJA110A-DHH4A-22DN
EJA110A-DHS5A-92DN EJA110A-DHH5A-92DN EJA110A-DHS5A-22DN EJA110A-DHH5A-22DN
EJA110A-DHS4A-92NN EJA110A-DHH4A-92NN EJA110A-DHS4A-22NN EJA110A-DHH4A-22NN
EJA110A-DHS5A-92NN EJA110A-DHH5A-92NN EJA110A-DHS5A-22NN EJA110A-DHH5A-22NN
EJA110A-EHS4A-92DN EJA110A-EHH4A-92DN EJA110A-EHS4A-22DN EJA110A-EHH4A-22DN
EJA110A-EHS5A-92DN EJA110A-EHH5A-92DN EJA110A-EHS5A-22DN EJA110A-EHH5A-22DN
EJA110A-EHS4A-92NN EJA110A-EHH4A-92NN EJA110A-EHS4A-22NN EJA110A-EHH4A-22NN
EJA110A-EHS5A-92NN EJA110A-EHH5A-92NN EJA110A-EHS5A-22NN EJA110A-EHH5A-22NN
EJA110A-DLS4A-92DA/NF1 EJA110A-DLH4A-92DA/NF1 EJA110A-DLS4A-22DC/NF1
EJA110A-DLH4A-22DC/NF1 EJA110A-DLS5A-92DA/NF1 EJA110A-DLH5A-92DA/NF1
EJA110A-DLS5A-22DC/NF1 EJA110A-DLH5A-22DC/NF1 EJA110A-DLS4A-92NA/NF1

