Electromagnetic flowmeter after-sales case sharing

• 1. Installation: the scene is a residential district of geothermal water heating equipment, from more than 1,000 meters of deep wells after pumping water, after heat exchange, filtration and other processes, the water back to the well, in the well outlet, the installation of an electromagnetic heat meter, the water through the equipment back to the well, back to the water there is an electromagnetic heat meter. Because of the site flow loss is very small, so the normal measurement should be into the water out of the two flow meter flow rate is similar, the problem of the table for the outlet installed at the heat meter.
• 2. Field phenomenon: electromagnetic heat meter just installed on the flow rate is normal, a week after the flow rate becomes small, the flow rate is getting smaller and smaller, three months after the should be 60m³/h, into 10m³/h. The first time this phenomenon after the replacement of a heat meter, after the replacement of the same situation as the above. Because of the vortex in front of the field meter, and the front straight pipe section is not enough, has been mistakenly thought that it is because of the straight pipe section.
• 3. Processing: the scene after the removal of the flowmeter, the liner found inside the phenomenon of scaling, the electrode near the cleanup, the flow is still not normal, and then the inlet and outlet flowmeter sensors are interchanged, the result is that the inlet flowmeter display is still not normal, to rule out the problem of the straight section of the pipe. Because the two tables of scaling and cleanup look the same, it is difficult to determine the problem, so the sensor is removed, back to the company for testing.
• 4. Test results: after returning to the factory directly on the device detection, found that the flow rate is four times smaller than normal, after testing the sensor everything is normal, and then began to clean up the surface of the lining dirt, first cleaned up half of this time the detection of the flow rate is twice as small. After the lining surface wipe clean flow return to normal.

• 5. Conclusion: Wipe off the powder with a magnet sucked, found to have a strong magnetic conductivity, after analysis, concluded that the knot wheel: it is because of the internal scaling material has a strong magnetic conductivity, caused by the conduit within the magnetic field is sucked away, disruptions, resulting in a decline in signal strength, (equivalent to the use of the carbon steel material conduit), and ultimately lead to the measurement of the abnormal.
• 6. Troubleshooting: Why is there scaling on the inlet and outlet, while the flow rate on the inlet is normal? Because the water out of the inlet is unfiltered, so there are more minerals and strong magnetic conductivity, while the outlet is filtered, so there is no magnetic conductivity of the scale, which does not affect the normal measurement. The permeability of the scale is the only factor that causes the flow rate to be abnormal. The permeability of the scale is the only factor that causes the flow rate to be abnormal. The permeability of the scale is the only factor that causes the flow rate to be abnormal.

Above is the electromagnetic flowmeter manufacturer Supmea summary of the editorial, there are questions you can directly consult us online or directly call our hotline to contact.