Why did the electromagnetic flowmeter suddenly alarm, and the reason for the electromagnetic flowmeter alarm

Why did the electromagnetic flowmeter suddenly alarm, and the reason for the electromagnetic flowmeter alarm is analyzed The electromagnetic flowmeter excitation alarm and system alarm are electromagnetic flowmeter broken? System alarm: SYS——system excitation alarm, also excitation alarm. In fact, the excitation alarm and the system alarm are the same thing, sometimes called the system excitation alarm, which belongs to the alarm of the excitation signal detected by the intelligent electromagnetic flowmeter. It is caused by the open circuit of the excitation coil caused by the water entering the junction box during use. Electromagnetic flowmeter system alarm solution: the solution is also very simple, the user can use a multimeter to detect the on-off of the excitation line to judge, the specific terminals are EXT+ and EXT- these two terminals, to measure whether there is resistance, by judging the resistance value to determine the cause of the excitation circuit disconnection. Specific judgment criteria: the resistance of the excitation coil will not exceed 200Ω. There is also a battery-powered electromagnetic flowmeter. Its excitation alarm is to detect the resistance of the excitation coil. Although an excitation alarm will occur, it will not affect the measurement results. The user can solve this phenomenon by setting the excitation method.

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