Electromagnetic flowmeter is a flow measurement instrument that measures the induced electromotive force generated by the movement of a conductor (such as water) in a magnetic field.
The electromagnetic flowmeter can display the flow rate normally if there is water in the pipe.
1. Working principle of electromagnetic flowmeter
Electromagnetic flowmeter is a flow measurement instrument that measures the induced electromotive force generated by the movement of a conductor (such as water) in a magnetic field. Specifically, when the medium (such as water) passes through the measuring tube, the electrodes inside the electromagnetic flowmeter will apply a magnetic field perpendicular to the direction of the measuring tube. When the conductor moves in this magnetic field, it will generate an induced electromotive force, the size of which is related to the speed of the conductor and the magnetic field. proportional to the intensity. By measuring the magnitude of the induced electromotive force, the speed of the conductor passing through the measuring tube can be obtained, and then the flow rate of the conductor can be obtained based on the cross-sectional area of the pipe.
2. The influence of moisture in the pipeline on the electromagnetic flowmeter
If there is moisture in the pipeline, it will affect the measurement results of the electromagnetic flowmeter. Mainly manifested in the following aspects:
1. Measurement accuracy decreases. Moisture in the pipeline will cause uneven distribution of the medium and affect the measurement accuracy of the electrode.
2. The measurement signal is interfered. Moisture in the pipeline will cause uneven distribution of the medium, causing the measurement signal to be interfered by clutter.
3. Lead to measurement deviation. The presence of moisture in the pipeline will cause deviations in the measurement results of the electromagnetic flowmeter.
3. Whether the electromagnetic flowmeter can display the flow rate if there is water in the pipe
Based on the working principle of the electromagnetic flowmeter and the influence of water in the pipe on the electromagnetic flowmeter, we can draw the following conclusions: The electromagnetic flowmeter can display the flow rate normally even if there is water in the pipe. Because the electromagnetic flowmeter measures the flow rate by measuring the induced electromotive force generated by the movement of a conductor in a magnetic field. The water in the pipeline is the medium. Although it will affect the measurement of the electromagnetic flowmeter, it will not directly affect the performance of the electromagnetic flowmeter. Show results.
Therefore, the electromagnetic flowmeter can display the flow rate normally even if there is moisture inside the pipe. However, since the moisture in the pipeline will have an impact on the measurement accuracy and signal quality of the electromagnetic flowmeter, in actual use, it is necessary to make a reasonable selection of the installation location of the electromagnetic flowmeter to try to avoid the impact of moisture in the pipeline on the electromagnetic flowmeter.
Hangzhou Economic Development Area，Hangzhou 310018，China
