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艾默生流量计涡轮流量计由涡轮、轴承、前置放大器、显示仪表组成。被测流体冲击涡轮叶片，使涡轮旋转，涡轮的转速随流量的变化而变化，即流量大，涡轮的转速也大，再经磁电转换装置把涡轮的转速转换为相应频率的电脉冲，经前置放大器放大后，送入显示仪表进行计数和显示，根据单位时间内的脉冲数和累计脉冲数即可求出瞬时流量和累积流量。当流体沿着管道的轴线方向流动，并冲击涡轮叶片时，便有与流量qv、流速V和流体密度ρ乘积成比例的力作用在叶片上，推动涡轮旋转。在涡轮旋转的同时，叶片周期性地切割电磁铁产生的磁力线，改变线圈的磁通量。根据电磁感应原理，在线圈内将感应出脉动的电势信号，此脉动信号的频率与被测流体的流量成正比。 艾默生流量计涡轮变送器输出的脉冲信号，经前置于放大器放大后，送入显示仪表，就可以实现流量的测量。流量计本体选用316不锈钢材料制作为好，防腐效果好。轴承一.般有炭化钨，聚四氟乙烯，碳石墨三种规格。碳化钨它作为工业控制的标准件，聚四氟乙烯，碳石墨能防腐，一般在化工场所先考虑。轴承的寿命流速的平方成正反比，感应探头是检测转动体的运动并把它转化为脉冲数字电信号，它电磁线圈电压输出值接近正弦曲线，脉冲信号的频率范围随测量的流量大小成线性变化。http://www.whamri.com/电话：027-87263542手机：18372021864ABSolute;top:0;border:0;width:undefinedpx;height:undefinedpx;" SANdbox="allow-forms 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?guci=2.2.0.0.2.2.0.0&client=ca-pub-6745515041074118&ouTPUt=html&adk=1812271804&adf=3279755396&plat=1%3A8%2C2%3A8%2C8%3A134217728%2C9%3A134250504%2C10%3A32%2C11%3A32%2C16%3A8388608%2C17%3A32%2C24%3A32%2C25%3A32%2C30%3A1048576%2C32%3A32%2C40%3A32&format=0x0&url=https%3A%2F%2Fwww.bizrobot.com%2Fcompany_bloginfo.php%3Fact%3D1&ea=0&flash=29.0.0&pra=5&wgl=1&tt_state=W3siaXNzdWVyT3JpZ2luIjoiaHR0cHM6Ly9hZHNlcnZpY2UuZ29vZ2xlLmNvbSISInN0YXRlIjowfSx7Imlzc3Vlck9yaWdpbiI6Imh0dHBzOi8vYXR0ZXN0YXRpb24uYW5kcm9pZC5jb20iLCJzdGF0ZSI6MH1d&dt=1609383526545&bpp=12&bdt=53&idt=287&shv=r20201203&cbv=r20190131&ptt=9&saldr=aa&cookie=ID%3Da07b3c4ba002eaff-22ed306a0ec40076%3AT%3D1602729171%3ART%3D1602729171%3AS%3DALNI_MbBh5yg2uKd0UtH0u1Ylcdyq42wTg&nras=1&correlator=7328200502117&frm=23&ife=1&pv=2&ga_vid=370789842.1609383527&ga_sid=1609383527&ga_hid=1405221267&ga_fc=0&nhd=1&u_tz=480&u_his=7&u_java=0&u_h=1080&u_w=1920&u_ah=1030&u_aw=1920&u_cd=24&u_nplug=14&u_nmime=31&adx=-12245933&ady=-12245933&biw=861&bih=649&isw=730&ish=360&ifk=2699508910&scr_x=0&scr_y=0&eid=21067981%2C21068083&oid=3&pvsid=1119637151222454&pem=217&ref=https%3A%2F%2Fwww.bizrobot.com%2Fcompany_bloginfo.php%3Fadd_suc%3D1&rx=0&eae=2&fc=1920&brdim=692%2C18%2C692%2C18%2C1920%2C0%2C1227%2C1030%2C730%2C360&vis=1&rsz=%7C%7Cs%7C&abl=NS&fu=9228&bc=31&ifi=0&uci=0.tl2rmns3b7rj&fsb=1&dtd=313" marginwidth="0" marginheight="0" vspace="0" hspace="0" allowtransparency="true" scrolling="no" allowfullscreen="true" data-google-container-id="0.tl2rmns3b7rj" data-load-complete="true"> |