关键字:阀门定位器 http://www.samson-china.com/ 阀门定位器将阀杆位移信号作为输入的反馈测量信号,以控制器输出信号作为设定信号进行比较,当两者出现偏差的时候,可以改变到执行机构的输出信号,使执行机构动作。阀门定位器按输入信号的不同可分为三种分为电气阀门定位器、智能阀门定位器、和气动阀门定位器。 电气阀门定位器的输入信号是标准电流或电压信号,它会在内部将电信号转换为电磁力,然后输出气信号到拨动控制阀。 智能电气阀门定位器要使阀门开度对应于控制室输出的电流信号,所以它要将控制室输出的电流信号转换成驱动调节阀的气信号,再去抵消根据调节阀工作时阀杆摩擦力和介质压力波动而产生的不平衡力,并且由于智能因素可以进行智能组态设置相应的参数,达到改善控制阀性能的目的。 气动阀门定位器输入信号是标准气信号,如20~100kPa气信号,其输出信号也是标准的气信号。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.samson-china.com/a/xwzx/234.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%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&adsid=NT&dt=1590651430919&bpp=7&bdt=80&idt=274&shv=r20200526&cbv=r20190131&ptt=9&saldr=aa&cookie=ID%3D5fb7eae809183df8%3AT%3D1588147156%3AS%3DALNI_MZhOWs11HQ-EEy1X6tCtUAbNrQ6cw&crv=1&nras=1&correlator=2209846829746&frm=23&ife=1&pv=2&ga_vid=925092251.1590651431&ga_sid=1590651431&ga_hid=35053821&ga_fc=0&iag=3&icsg=42&nhd=1&dssz=4&mdo=0&mso=0&u_tz=480&u_his=6&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%2C21066085&oid=3&pvsid=1890628515255936&pem=16&ref=https%3A%2F%2Fwww.bizrobot.com%2Fcompany_bloginfo.php%3Fadd_suc%3D1&rx=0&eae=2&fc=1920&brdim=0%2C0%2C0%2C0%2C1920%2C0%2C1920%2C1030%2C730%2C360&vis=1&rsz=%7C%7Cs%7C&abl=NS&fu=8220&bc=31&ifi=0&uci=0.rgvmwab4wcxk&fsb=1&dtd=300" marginwidth="0" marginheight="0" vspace="0" hspace="0" allowtransparency="true" scrolling="no" allowfullscreen="true" data-google-container-id="0.rgvmwab4wcxk" data-load-complete="true"> |