网址:http://www.whamri.com/ 横河流量计中大口径仪表应用于给排水工程。中小口径常用于固液双,相等难测流体或高要求场所。市场上的通用型仪表,有些精度高、功能多,有些精度低、功能简单。精度高的仪表基本误差为(士0.5%~士1%) ,精度低的仪表则为(士1.5%~士2.5%) 。测量精度要求不很高的场所(例如非贸易核算仅以控制为目的,只要求高可靠性和优良重复性的场所)选用高精度仪表在经济上是不合算的。选定仪表口径不一定与管径相同,应视流量而定。流程工业输送水等粘度不同的液体,管道流速一般是经济流速1.5~ 3m/s。满度流量时液体流速可在1~10m/s范围内选用,范围是比较宽的。上限流速在原理上是不受限制的。 横河流量计在测量接近阈值的低电导液体,尽可能选定较低流速(小于0.5~ 1m/s),因流速提高流动噪声会增加,而出现输出晃动现象。当被测液体导电时,不能低于阈值(即下限值)。电导率低于阈值会产生测量误差直至不能使用,超过阈值即使变化也可以测量,示值误差变化不大,当流体混入成泡状流的微小气泡时,流量计仍可正常工作,但测得的是含气泡体积的混合体积流量,如气体含量增加到形成弹(块)状流,因电极可能被气体盖住使电路瞬时断开,出现输出晃动甚至不能正常工作。电话:027-87263542手机:18372021864PARent;">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=29.0.0&pra=5&wgl=1&dt=1593756083305&bpp=2&bdt=413&idt=177&shv=r20200624&cbv=r20190131&ptt=9&saldr=aa&cookie=ID%3Da07b3c4ba002eaff%3AT%3D1586760676%3AS%3DALNI_MZl9pNx2HQ9GFalqRptRGcqVZOiBA&nras=1&correlator=7501864763188&frm=23&ife=1&pv=1&ga_vid=1096948079.1593756084&ga_sid=1593756084&ga_hid=1599619438&ga_fc=0&iag=3&icsg=42&nhd=1&dssz=4&mdo=0&mso=0&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=15&u_nmime=32&adx=-12245933&ady=-12245933&biw=1272&bih=743&isw=730&ish=360&ifk=2699508910&scr_x=0&scr_y=0&eid=21065532%2C42530494%2C42530496%2C42530499%2C42530501&oid=3&pvsid=1242961062338416&pem=217&ref=https%3A%2F%2Fwww.bizrobot.com%2Fcompany_bloginfo.php%3Fadd_suc%3D1&rx=0&eae=2&fc=1920&brdim=564%2C41%2C564%2C41%2C1920%2C0%2C1393%2C907%2C730%2C360&vis=1&rsz=%7C%7Cs%7C&abl=NS&fu=8220&bc=31&ifi=0&uci=0.5a2q4zwe8x7f&fsb=1&dtd=216" marginwidth="0" marginheight="0" vspace="0" hspace="0" allowtransparency="true" scrolling="no" allowfullscreen="true" data-google-container-id="0.5a2q4zwe8x7f" data-load-complete="true"> |