Electromagnetic flowmeter in the use of the operation is relatively simple, for the operation of everyone should have some understanding. But in the face of some of the problems about the flow meter, it is more uncertain, do not dare to operate easily. That I introduced the following common problems, when encountered will not be too panicky.

1, the scene shows the dead, garbled solution to the problem. For the program out of control caused by garbled, dead, the circuit increases the program running monitoring circuit, when the microcontroller program out of control can be found in a timely manner and make the whole system reset, so that the operation of the program to return to the correct track, to avoid dead, garbled the occurrence of the problem. Of course, in the application of the need to apply to the power-down protection and software instruction redundancy measures, so that you can avoid the flow of the meter microcontroller program out of control.

2, the solution to the problem of zero drift. Temperature compensation design can be used to solve the problem, that is, in the circuit to increase the ambient temperature detection part, and the detected temperature value of the real-time transmission to the microcontroller, the microcontroller according to the temperature changes in the acquisition of some of the parameters of the circuit for corrective action, greatly reducing the ambient temperature changes in the circuit to produce the zero point drift. Can also be changed by changing the input channel input mode, the single-ended to ground input mode to double-ended not to ground input mode that is usually referred to as differential input mode, through the differential input mode so that the common mode interference in the input channel interference voltage can be offset, thus solving the problem of common mode interference zero drift.