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电磁流量计进出水流量相差大

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⑵应尽量安装在干燥通风之处,不宜在潮湿、易积水的地方安装。
⑶应尽量避免日晒雨淋,避免环境温度高于60℃及相对湿度大于95%。
⑷选择便于维修,活动方便的地方。
⑸流量计应安装在水泵后端,决不能在抽吸侧安装;阀门应安装在流量下游侧。
●安装要求
为了你正确的测量,在选择管道上位置时应注意以下几点要求:
⑴传感器既可在直管道上安装,也可以在水平或倾斜管道上安装,但要求二电极的中心连线处于水平状态。
⑵介质在安装位置应该满管流动,避免比满管及气体附着在电极上。
⑶对于液固两相流体,采用垂直安装,使被传感器衬里磨损均匀,延长使用寿命。
(电磁流量计进出水流量相差大)

10、测量管道内无阻流件,因此没有附加的压力损失;测量管道内无可动部件,因此传感器寿命极长。
11、由于感应电压信号是在整个充满磁场的空间中形成的,是管道载面上的平均值,因此传感器所需的直管段较短,长度为5倍的管道直径。
作用是让被测导电性液体通过。为了使磁力线通过测量导管时磁通量被分流或短路,测量导管必须采用不导磁、低导电率、低导热率和具有一定机械强度的材料制成,可选用不导磁的不锈钢、玻璃钢、高强度塑料、铝等。
电极:其作用是引出和被测量成正比的感应电势信号。电极一般用非导磁的不锈钢制成,且被要求与衬里齐平,以便流体通过时不受阻碍。它的安装位置宜在管道的垂直方向,以防止沉淀物堆积在其上面而影响测量精度。
(电磁流量计进出水流量相差大)

氨水可以用电磁流量计广泛应用于石油、化工、冶金、轻纺、造纸、环保、食品等工业部门及市政管理,水利建设、河流疏浚等领域的流量计量。
氨水可以用电磁流量计连接方式:流量计与配管之间均采用法兰连接,法兰连接尺寸应符合GB11988的规定
防爆等级:mdIIBT4
防护等级:IP65,特殊订制可达IP68
环境温度:-25~+60℃
相对温度:5%~95%
氨水可以用电磁流量计消耗总功率:小于20W
应根据被测流体的腐蚀性来选择电极的材料,请查有关手册,对于特殊流体应作腐蚀性试验
材料代号耐腐蚀性能
316L不锈钢V1适用于工业、生活用水,原水井水,城市污水等中性溶液
(电磁流量计进出水流量相差大)

流量范围等性能的请求较高;而以过程检测与控制为目的应用,就把对仪表的反复性、长期稳定性、牢靠性、输出和响应时间等请求作为。
涡街流量计是一种中等准确度、技术性能比拟全面的流量仪表,既可用于计量,也可用于过程控制系统。表13-1列出了不同检测办法涡街流量计的主要技术性能,可供选表时参考。
二、流体特征
流体特性主要指流体的物理特性,如流体的密度、粘度、及液体饱和蒸气压等。另外,流体的温度、压力也是选表中应思索的重要问题。
涡街流量计的特性之一是对被测介质的物性变化不敏感,所以涡街流量计对流体特性的请求相对宽松。下面我们分别停止阐明:
(电磁流量计进出水流量相差大)

2、针对滤波输出的交流方波信号已研制出整流采样电路,实验结果表明,该电路具有很强的抗干扰能力,提供了一种稳定输出信号电压的方法
3、开发了一个原型系统,并在实验装置上进行了实验测试,结果表明所提出的方法是有效的,原型的开发是成功的。
(电磁流量计进出水流量相差大)

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