When the indication value of the flow control instrument system reaches the minimum, first check the on-site detection instrument. If it is normal, the fault is in the display instrument. When the indication of the field detection instrument is also the smallest, check the opening of the regulating valve. If the opening of the regulating valve is zero, it is often a fault between the regulating valve and the regulator.

The Yokogawa AXF electromagnetic flow meter has the diagnostic function of replaceable electrode and electrode pollution degree, ​easy to maintain. And, AXF use dual-frequency excitation method (diameter of pipe less than 400mm/16in is suitable), greatly reduce fluid noise.