First of all, we can be sure that the magnetic induction intensity has a certain impact on the metering performance of electromagnetic water meters.
When the magnetic induction intensity is less than 0When it is 3t, the metering performance of the electromagnetic water meter is within the qualified range. And when the magnetic induction intensity is greater than 0At 4t, the measurement error changes greatly, and the unqualified situation occurs. Among them, the metering performance of the minimum flow rate and the demarcation flow rate is obviously affected by the magnet, while the variation of the error of the metering performance of the commonly used flow rate is smaller than that of the minimum flow rate and the demarcation flow rate. This suggests that a change in the intensity of magnetic induction may cause a change in the metering performance of an electromagnetic water meter.
The magnet has a greater impact on the electromagnetic water meter, and the parts are the bottom, front end, and back end. The influence of magnets on electromagnetic water meters is mainly negative metering deviations, which lead to low flow measurements. When the magnetic induction intensity is weakened, the induced electromotive force in the coil also decreases, resulting in a low flow measurementConversely, when the magnetic induction intensity increases, the induced electromotive force in the coil also increases, resulting in a higher flow measurement.
In order to reduce the influence of magnetic induction intensity on the metering performance of electromagnetic water meters, the following measures can be taken: select appropriate magnet and coil materials and sizes to ensure that the magnetic induction intensity remains stable under normal working conditionsRegularly inspect and replace magnets to ensure their effectiveness;According to the actual application requirements, consider setting up a degaussing device near the electromagnetic water meter.
In summary, the magnetic induction intensity has a certain impact on the metering performance of electromagnetic water meters, but this effect can be reduced by taking corresponding measures.