Electromagnetic flowmeter flow rate display negative values of several reasons

• 1、The sensor was not installed according to the flow direction marking, resulting in the measurement direction being reversed. Treatment: Reinstallation.

• 2、Sensor signal line is connected to the reverse, due to the electromagnetic flowmeter has a positive and negative flow measurement function, display reverse flow. Treatment: switch the signal line.
• 3、Measuring pipe is empty or not filled, gas is present.

At this time, the flow meter will display a negative number or the flow rate value of large and small. Treatment: Let the pipeline filled with the measured medium, so that the flowmeter has the conditions for measurement.