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关键字：ABB阀门定位器 http://www.abb-positioner.com/ ABB阀门定位器AV能够通过反向平衡力来操作，但是会受到信号隔膜组件的向上的力以及范围弹簧向下的力。这两种作用力也就导致了定位器的AV有两种形式。ABB阀门定位器的AV1接收外部气动信号和将其转换为气动输出，这是产生定位动力执行器的动力。定位器AV1可使用外部输入压力，如果V1接受失败，会使当前输入信号丢失，可安全打开或关闭。ABB阀门定位器AV2是在内部产生输入信号使用I/P转换器的压力。AV2接收来自的电流输入控制装置并将信号转换为气动信号。该气动信号转换为气动输出产生定位致动器的动力。范围弹簧力是形状和位置的函数凸轮。凸轮连接到凸轮轴通过联轴器或连杆连接到执行器。因此，范围弹簧张力是致动器的函数位置。在这种形势下，ABB阀门定位器在失去电流输入时，会出现无法安全打开/关闭。德科蒙过程控制（武汉）有限公司座机：027-88062221传真：027-88068180邮箱：sales@whdkm.com地址：武汉市武昌区中南国际城D座一单元901室原文出处：http://www.abb-positioner.com/a/xwdt/82.htmlPARent;">ABSolute;top:0;border:0;width:undefinedpx;height:undefinedpx;" sandbox="allow-forms allow-pointer-lock allow-popUPS allow-popups-to-escape-sandbox allow-same-origin allow-scripts allow-top-navigation-by-user-activation" frameborder="0" src="https://googleads.g.doubleclick.net/pagead/ads?client=ca-pub-6745515041074118&ouTPUt=html&adk=1812271804&adf=3279755396&plat=1%3A32776%2C2%3A32776%2C8%3A32768%2C9%3A32776%2C10%3A32%2C11%3A32%2C16%3A8388608%2C17%3A32%2C24%3A32%2C25%3A32%2C30%3A1081344%2C32%3A32%2C40%3A32&guci=2.2.0.0.2.2.0.0&format=0x0&url=https%3A%2F%2Fwww.bizrobot.com%2Fcompany_bloginfo.php%3Fact%3D1&ea=0&flash=32.0.0&pra=5&wgl=1&dt=1591254796899&bpp=7&bdt=471&idt=32&shv=r20200601&cbv=r20190131&ptt=9&saldr=aa&cookie=ID%3D5fb7eae809183df8%3AT%3D1588147156%3AS%3DALNI_MZhOWs11HQ-EEy1X6tCtUAbNrQ6cw&crv=1&nras=1&correlator=5723575889942&frm=23&ife=1&pv=2&ga_vid=1362135443.1591254797&ga_sid=1591254797&ga_hid=1548686067&ga_fc=0&iag=3&icsg=42&nhd=1&dssz=4&mdo=0&mso=0&u_tz=480&u_his=4&u_java=0&u_h=1080&u_w=1920&u_ah=1030&u_aw=1920&u_cd=24&u_nplug=16&u_nmime=33&adx=-12245933&ady=-12245933&biw=1332&bih=649&isw=730&ish=360&ifk=2699508910&scr_x=0&scr_y=0&eid=21065532%2C42530452%2C42530454&oid=3&pvsid=4423742722862454&pem=16&ref=https%3A%2F%2Fwww.bizrobot.com%2Fcompany_bloginfo.php&rx=0&eae=2&fc=1920&brdim=0%2C0%2C0%2C0%2C1920%2C0%2C1920%2C1030%2C730%2C360&vis=2&rsz=%7C%7Cs%7C&abl=NS&fu=8220&bc=31&ifi=0&uci=0.7f9unqzbyses&fsb=1&dtd=53" marginwidth="0" marginheight="0" vspace="0" hspace="0" allowtransparency="true" scrolling="no" allowfullscreen="true" data-google-container-id="0.7f9unqzbyses" data-load-complete="true"> |