The reasons for the smaller measurement value of the electromagnetic flowmeter include smaller current, weaker magnetic field, smaller fluid density or conductivity, and incorrect selection.
1. The smaller the current leads to the smaller measured value
The electromagnetic flowmeter calculates the flow rate by measuring the current in the fluid. The current size is related to the measured value. directly related. Therefore, if the current magnitude decreases, the measured value will decrease accordingly. This situation is often caused by unstable power supply voltage, aging or blockage of wires, etc. To solve this problem, you can check the power voltage, replace the wires, or clear the blockage, etc.
2. The internal magnetic field of the electromagnetic flowmeter becomes weaker
The magnetic field inside the electromagnetic flowmeter has a great influence on the size of the current. If the magnetic field becomes weak, Then the current when the fluid passes through will become smaller accordingly, resulting in smaller measured values. The reason for the weakening of the magnetic field may be the aging of the magnet or the heating of the electromagnet. This problem usually requires replacement of the magnet or timely repair and maintenance.
3. The fluid density or conductivity becomes smaller. The electromagnetic flowmeter calculates the flow rate based on the conductivity and density of the fluid. If these factors change, the measured value will become smaller accordingly. This situation is generally caused by temperature changes in the fluid, the addition of chemical reagents, or changes in water content. When using an electromagnetic flowmeter, it is necessary to measure and verify the conductivity and density of the fluid in different states to ensure the accuracy of the measurement.
4. Wrong selection of electromagnetic flowmeter
Different electromagnetic flowmeters have different application ranges and accuracy. If the selection is incorrect, it is easy to cause inaccurate measurement results. Therefore, when using an electromagnetic flowmeter, you should choose the appropriate model and accuracy as needed to ensure the credibility and accuracy of the measurement results.
Summary: The smaller measurement value of the electromagnetic flowmeter may be caused by the smaller current, weaker internal magnetic field, smaller fluid density or conductivity, and incorrect selection of the electromagnetic flowmeter. Dealing with these problems requires comprehensive consideration and solution based on the actual situation.
Hangzhou Economic Development Area，Hangzhou 310018，China
