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1. What is the reason for the electromagnetic flowmeter not displaying?
The common reasons for the electromagnetic flowmeter not displaying are concentrated in four aspects: power supply, connection, converter, and sensor, which need to be targeted for investigation. 1. To troubleshoot power issues, first confirm if the power supply has been interrupted, check the status of the power switch and fuse. If the fuse is found to be blown, it should be replaced to match the original specifications. Secondly, measure whether the power supply voltage is stable. If the voltage is too high or too low, it may trigger the equipment protection mechanism, resulting in no display. It is recommended to use a multimeter to verify whether the voltage meets the equipment labeling range. 2. Connecting the Fengzhen circuit and checking for loose cables or poor contact is a common problem. Focus on checking if the connecting cable between the sensor and the converter is securely fastened. If there are signs of detachment or corrosion, it needs to be unplugged or replaced. At the same time, check whether the wiring complies with the instructions, such as whether the power and signal lines are connected to the correct ports, to avoid equipment abnormalities caused by misconnection. 3. Converter function verification: Aging of internal components or program disorder of the converter may cause faults. The reset operation can be used as a preliminary treatment, and long pressing the reset button or power off restart may restore program operation. If there is still no response, it is necessary to check whether the electronic components such as the circuit board and the rough capacitance of the silver electrode are damaged. It is recommen
2. The electromagnetic flowmeter is installed in a DN150 water pipeline. Sometimes, the flowmeter may not display, and it can be corrected by stopping the power supply ..
Do you mean that the entire LCD screen is out of battery or there is no display value showing up? The first situation requires checking whether the cable plug inside is loose; In the second scenario, first confirm whether the fluid flow rate or lead cover is also intermittent. Secondly, open the watch body and check if there is scaling or blockage of debris at the electrodes inside the watch body. Finally, check the wiring plug of the meter head again. If the current output is normal, it must have been caused by the loose plug during the excitation, resulting in the failure to display. If there is no current output, check whether the output board is faulty. If you are a newly installed flowmeter, you also need to confirm whether the meter body is installed in reverse. When installing in reverse, some meters cannot determine reverse flow, which can also cause no display. I have encountered this once. If the table supports reverse flow, you can set it up in your software. If it doesnt su
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