摘  要：差压变送器是测量变送器两端压力之差的变送器。测量介质正负两端的压力差，转化成可以反应压力差的标准电流信号（4-20mA）。现着重介绍EJA差压变送器的工作原理，对EJA差压变送器实际应用中导致除氧器液位调节器指示波动的故障进行分析处理，消除了故障症结。

关键词：差压变送器  调节阀  调节器  故障

Abstract: The differential pressure transmitter is a transmitter that measures the difference in pressure across the transmitter. Measure the pressure difference between the positive and negative ends of the medium and convert it into a standard current signal (4-20mA) that can react to the