横河EJA438W隔膜密封压力变送器

横河EJA438W隔膜密封压力变送器，横河变送器代理商，横河EJA438W隔膜密封压力变送器，横河变送器代理商
当被测介质需求结晶温度较高时，可选用将膜片凸出的结构，这样可将传感膜片插入到设备内部，从而感应到的介质温度不会降低，这样测量是有保障的，即选用插入式法兰变送器。????
隔离型变送器有远传型和一体型。远传型即外膜盒与测量膜盒之间用加强毛细管连接，一般毛细管为 3~5米，这样外膜盒装在设备上，内膜盒及变送器可以安装在便于维护的支架上；另一种形式是外膜盒与变送器作成一体直接由法兰安装在设备上。对于隔离型压力变送器它还可以作成螺纹连接型，即外膜盒或外弹性元件可在安装螺纹的前面，只要在被测设备上焊接上内螺纹凸台，便可将变送器直接拧到设备上，安装非常方便。????
隔离型压力/差压变送器的制作复杂，材质要求高，所以它的价格通常是普通型的3倍。
横河EJA438W隔膜密封压力变送器原理http://www.sluos.com
罗斯蒙特3051CD差压变送器
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