罗斯蒙特变送器压力变送器已经将传感膜头与信号处理、转换单元组合在一个壳体中,并安装在检测现场,这种信号采集转换装置在工业中被称为次仪表,例如热电偶、压力变送器、流量计、液位计等。而接受来自一次仪表的信号,并显示、记录、转换及发送该信号的装置称为二次仪表,例如:显示报警仪记录仪、调节器等。二次仪表通常安装在仪表盘上。罗斯蒙特变送器电流输出型仪表:一次仪表的输出信号可以是电压,也可以是电流。由于电流信号不易受干扰,且便于远距离传输(可以不考虑电路压降),所以在一次仪表中多采用电流输出型从电动仪表开始,规定标准电流输出型仪表的输出为4~ 20mA,对应的输出电压为1~5V。在4~ 20mA信号制中,4mA对应于零输入,20mA对应于满度输入。027-88062221传真:027-88068180网址:http://www.whdkm.com/LED">ABSolute;top:0;border:0;width:undefinedpx;height:undefinedpx;" 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%3A134217728%2C9%3A134250504%2C16%3A8388608%2C17%3A32%2C24%3A32%2C25%3A32%2C30%3A1081344%2C32%3A32&format=0x0&url=https%3A%2F%2Fwww.bizrobot.com%2Fcompany_bloginfo.php%3Fact%3D1&ea=0&flash=28.0.0&pra=5&wgl=1&dt=1625042441506&bpp=13&bdt=269&idt=304&shv=r20210628&ptt=9&saldr=aa&cookie=ID%3Df208fc56032ec04a-222ab57211c400ce%3AT%3D1602655468%3ART%3D1602655468%3AS%3DALNI_MZ90KP_NdNDKAtfzA4A4RaK0MMehQ&nras=1&correlator=3128643075734&frm=23&ife=1&pv=1&ga_vid=1311706500.1625042442&ga_sid=1625042442&ga_hid=253445548&ga_fc=0&nhd=1&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=11&u_nmime=26&adx=-12245933&ady=-12245933&biw=1259&bih=816&isw=730&ish=360&ifk=2699508910&scr_x=0&scr_y=0&eid=31061421&oid=3&pvsid=2367939479917094&pem=596&ref=https%3A%2F%2Fwww.bizrobot.com%2Fcompany_bloginfo.php&eae=2&fc=1920&brdim=606%2C139%2C606%2C139%2C1920%2C0%2C1259%2C816%2C730%2C360&vis=1&rsz=%7C%7Cs%7C&abl=NS&fu=32772&bc=29&ifi=1&uci=1.gwncz2nxaxel&dtd=331" marginwidth="0" marginheight="0" vspace="0" hspace="0" allowtransparency="true" scrolling="no" allowfullscreen="true" data-google-container-id="1.gwncz2nxaxel" data-load-complete="true"> |