The output of the electromagnetic flowmeter suddenly decreases

　　1、 Reason for malfunction

　　The sudden decrease in the output signal of the electromagnetic flowmeter may be caused by the following reasons:

　　1. Electromagnetic interference: Electromagnetic interference is one of the common reasons for the decrease in output signal of flow meters. In some high electromagnetic interference environments, electromagnetic signals may affect the sensor of the electromagnetic flowmeter, reducing the strength of the output signal.

　　2. Power supply issue: As an electrical device, the stability of the output signal of an electromagnetic flowmeter is closely related to the stability of the power supply voltage. If the power supply voltage is unstable or too low, it will affect the output signal of the electromagnetic flowmeter.

　　3. Other faults: Malfunctions in the internal sensors or other components of the electromagnetic flowmeter may also cause a sudden decrease in the output signal.

　　2、 Solution

　　The following solutions can be taken to address the different reasons for the sudden decrease in output signal of electromagnetic flow meters:

　　1. Preventing electromagnetic interference: If the output signal decreases due to electromagnetic interference, shielding measures can be considered, such as installing wire harness sheaths or increasing ground connections, to avoid electromagnetic wave interference.

　　2. Check power supply: The stability of the output signal of the electromagnetic flowmeter is related to the stability of the power supply voltage. If the power supply voltage is found to be unstable during inspection, it is necessary to repair or replace the power supply equipment in a timely manner to ensure a stable power supply voltage.

　　3. Check for equipment malfunctions: If other sensors or components of the electromagnetic flowmeter malfunction, they need to be replaced or repaired in a timely manner.

　　3、 Precautions

　　1. In the case of electromagnetic interference, it is necessary to carry out renovation in areas with severe electromagnetic interference, while taking effective shielding measures, strictly controlling the direction of power lines, and reducing the impact of electromagnetic waves.

　　2. For power supply issues, suitable power supply equipment should be selected to ensure stable voltage, and the use of non-standard power supplies should be strictly prohibited to avoid affecting the electromagnetic flowmeter.

　　3. For other malfunctions, it is necessary to replace or repair them in a timely manner to avoid affecting the normal operation of the electromagnetic flowmeter.

　　【 Conclusion 】 This article analyzes the reasons for the sudden decrease in output of electromagnetic flowmeters and provides corresponding solutions and precautions, hoping to be helpful to relevant practitioners and users.