During the use of electromagnetic flowmeters, empty pipe alarms are often encountered. The so-called empty pipe alarm(FGP) of electromagnetic flowmeters refers to detecting whether the measuring fluid is filled with the sensor measuring tube and detecting the cause of the empty pipe alarm. We can use wires to The signal input terminal of the converter and the ground are short-circuited. If the measurement result is that the empty pipe becomes full, it means that the converter of the electromagnetic flowmeter is normal. The cause of the failure may be the low conductivity of the measured fluid or the empty pipe threshold setting. mistake. In addition, if there is a problem with the electrode of the electromagnetic flowmeter, an empty pipe alarm may also occur.