关键字:雷达液位计 http://www.dkmcn.com/ 雷达液位计利用了雷达波的特殊性能来进行液位测量。雷达波的物理特性与可见光相似,传播速度相当于光速。其频率为300MHz-3000GHz。雷达波可以穿透空间蒸汽、粉尘等干扰源,遇到障碍物易于被反射,被测介质导电性越好或介电常数越大,回波输出信号的反射效果越好。雷达波的频率越高,发射角越小,单位面积上能量(磁通量或场强)越大,波的衰减越小,雷达液位计的测量效果越好。雷达液位计工作的基本原理是发射-反射-接收。雷达变送器的天线以波束的形式发射最小5.8GHz的雷达输出信号。反射回来的输出信号仍由天线接收,雷达脉冲输出信号从 发射到接收的运行时间与变送器到介质表面的距离以及物位成比例。 选用雷达液位计必须要有的条件1储液罐容积:对大型罐(10000~100000m)及比较大液化气罐可选用性能较高液位计,中小罐可选用一般雷达液位计。2储液罐用途:贸易罐应选用高精度液位计,中间罐可用一般雷达液位计。3液体液面特性:储存粘度大的液体液面(如重油)时,应尽量采用与被测液体液面不接触或少接触类型的液位计,如雷达式、超声波式伸缩液位计,轻油可采用一般液位计。4用户实际需要:如果用户要求计量精度高而投资限制少,可以采用性能好的雷达液位计,一般情况下,老罐区改造或更新可结合原有液位计使用保养情况考虑选型,尽量统一选型。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原文出处:http://www.dkmcn.com/News_show.asp?id=945ABSolute;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%3A32776%2C2%3A32776%2C8%3A134217728%2C9%3A134250504%2C10%3A32%2C11%3A32%2C16%3A8388608%2C17%3A32%2C24%3A32%2C25%3A32%2C30%3A1081344%2C32%3A32%2C40%3A32&format=0x0&url=https%3A%2F%2Fwww.bizrobot.com%2Fcompany_bloginfo.php%3Fact%3D1&ea=0&flash=32.0.0&pra=5&wgl=1&tt_state=W3siaXNzdWVyT3JpZ2luIjoiaHR0cHM6Ly9hZHNlcnZpY2UuZ29vZ2xlLmNvbSISInN0YXRlIjowfSx7Imlzc3Vlck9yaWdpbiI6Imh0dHBzOi8vYXR0ZXN0YXRpb24uYW5kcm9pZC5jb20iLCJzdGF0ZSI6MH1d&dt=1605772414793&bpp=15&bdt=120&idt=235&shv=r20201112&cbv=r20190131&ptt=9&saldr=aa&cookie=ID%3D5fb7eae809183df8-22fd78660ec40024%3AT%3D1602660717%3ART%3D1602660717%3AS%3DALNI_MYMQQp2TnvCbvJQtTRQsdNX_-71Bg&nras=1&correlator=8664770030866&frm=23&ife=1&pv=2&ga_vid=1890793361.1605772415&ga_sid=1605772415&ga_hid=772302295&ga_fc=0&iag=3&icsg=138&nhd=1&dssz=5&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=17&u_nmime=34&adx=-12245933&ady=-12245933&biw=1243&bih=605&isw=730&ish=360&ifk=2699508910&scr_x=0&scr_y=0&oid=3&pvsid=950183958488187&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=8204&bc=31&ifi=0&uci=0.fvmyggza6j1a&fsb=1&dtd=277" marginwidth="0" marginheight="0" vspace="0" hspace="0" allowtransparency="true" scrolling="no" allowfullscreen="true" data-google-container-id="0.fvmyggza6j1a" data-load-complete="true"> |