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What is the average lifespan of a plug-in electromagnetic flowmeter?
1. The average lifespan of an insertable electromagnetic flowmeter is about five years
2. The advantages of an insertable electromagnetic flowmeter include easy installation and simple structure
3. However, the disadvantages of an insertable electromagnetic flowmeter are also obvious, and the complexity of the on-site situation has a great impact on its combustion application
4. It is difficult to standardize an insertable electromagnetic flowmeter, especially when the flow velocity distribution near the pipeline has a significant impact on measurement accuracy
5. In order to achieve accuracy, a straight pipe section of up to 30D to 50D is often required, which is difficult to achieve in actual on-site situations
Therefore, the accuracy of plug-in electromagnetic flow meters is often difficult to improve, generally only reaching a range of ± 3 to ± 5%.
2. Where should the plug-in electromagnetic flowmeter be installed in the pipeline?
The optimal installation position for the plug-in electromagnetic flowmeter is the vertical pipe section where the fluid flows from bottom to top, followed by the horizontal pipe section that meets the flow requirements. The installation conditions of front and rear straight pipe sections, full pipe, and no electromagnetic interference must be strictly followed.
.1. Vertical pipeline installation (preferred working condition) 1 Select a vertical pipe section where the fluid flows upstream, completely filling the pipeline without problems such as gas-liquid stratification, bubble adhesion to electrodes, or solid precipitation, with the highest measurement a
2. Installation of Horizontal Pipelines (Secondary Selection Zhenzhi Plan) 1 Only when the vertical pipeline cannot be constructed, the sensor electrode needs to be installed on the horizontal centerline of the pipeline to avoid the accumulation of bubbles above the electrode or solid precipitation covering the electrode. 2. It is also necessary to meet the requirements of upstream ≥ 5D and downstream ≥ 3D straight pipe sections, and ensure that the fluid in the pipeline is completely filled without any gas phase space. 3. If measuring fluids containing solid particles, the insertion point can be slightly lower than the horizontal centerline of the pipeline to reduce the accumulation of solid particles on the electrode surface, but it is necessary to ensure that the electrode is always immersed in the fluid.
III. Absolutely Forbidden Installation Location 1 Local flow disorder areas such as pipe bends, tees, pump outlets, regulating valves, etc. If it is impossible to avoid them, the upstream straight pipe section needs to be extended to more than 10D to correct the flow state. 2. The highest point of the pipeline (prone to accumulation of bubbles) and the lowest point (prone to depositi
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