KEBA DO321
KEBA DO321
KEBA DO321
6、动量式流量计
利用测量流体的动量来反映流量大小的流量计称动量式流量计.由于流动流体的动量P与流体的密度 及流速v的平方成正比,即pv2,当通流截面确定时,v与容积流量Q成正比,故pQ2。设比例系数为A,则Q=A 因此,测得P,即可反映流量Q.这种型式的流量计,大多利用检测元件把动量转换为压力、力及位移等,然后测量流量。这种流量计的典型仪表是靶式和转动翼板式流量计。
7、冲量式流量计
利用冲量定理测量流量的流量计称冲量式流量计,多用于测量颗粒状固体介质的流量,还用来测泥浆、结晶型液体和研磨料等的流量。流量测量范围从每小时几公斤到近万吨。典型的仪表是水平分力式冲量流量计,其测量原理是当被测介质从一定高度h自由下落到有倾斜角的检测板上产生一个冲力,冲力的水平分力马质量流量成正比,故测量这个水平分力即可反映质量流量的大小。按信号(九)的检测方式,该型流量计分位移检测型和直接测力型。
◆ 企业名称:厦门泰尼电气有限公司
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