Why does intelligent electromagnetic flowmeter show negative values?
The sensor signal line is connected reversely, because the intelligent electromagnetic flowmeter has positive and negative flow measurement function, and shows reverse flow
The sensor is not installed as indicated by the flow direction, causing the measurement to be reversed
Measuring pipe empty pipe or not full pipe, there is gas. When the flowmeter will show negative or flow value suddenly become small. Treatment method: let the pipeline filled with measured medium, so that flow meter has measurement conditions
