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『Electromagnetic flowmeter does not display flow rate』Related information(clamp on meter|electromagnetic meter|venturi meterrotameter|orifice meter|ultrasonic flow meter|mass flow meter|coriolis mass flow meter|coriolis flow meter|magnetic flow meter|magmeter flow meter|magflow flow meter|mag meter flow meter|electromagnetic flow meter|vortex flow meter|turbine flow meter|thermal mass flow meter|thermal flow meter|rotameter flow meter)
1. The core issues of electromagnetic flowmeter display screen not displaying numbers are generally concentrated in power supply, display module, signal transmission, parameter setting, or electromagnetic interference. Although the display screen can light up in terms of power supply, insufficient power supply voltage or poor contact may cause the numbers to not be displayed. You can first use a multimeter to check if the power supply voltage is within the rated range of the device, and check if there are any loose or oxidized wiring terminals. If necessary, replace the power supply circuit. If other functions are normal but there are no numbers on the screen, there is a high possibility of damage to the display module. It is recommended to directly contact the equipment manufacturer or after-sales service to confirm whether the module needs to be replaced, in order to avoid secondary damage caused by self disassembly. 3. Signal transmission issues such as open circuits, short circuits, or damaged shielding layers between sensors and converters can result in data transmission failure. A megohmmeter can be used to test the insulation of cables, check for loose joints, and prioritize using original shielded cables when replacing damaged cables. Improper operation of parameters or programs may result in incorrect parameter settings or program freezing. Try long pressing the device reset button to restore factory settings, and strictly follow the instructions to reconfigure parameters such as pipe diameter and range. If the reset is ineffective, the manufacturer needs to upgrade the firmware. If there are devices such as frequency converters and high-power motors in the surrounding area, strong magnetic fields can interf
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 support it, then only reverse flow can be reinstalled. I hope its helpful to you
3. 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 target