The problem that the turbine flowmeter output signal is disturbed by the motor next to it
The flow rate is low and the interference is very likely that the sensor is disturbed. Try to change the sensitivity of the magnetic sensor, the sensitivity difference, and the corresponding anti-interference in the circuit and program. Communication output is best isolated digital output such as 232
The simplest method is the most effective. The flow meter is powered by a battery or battery.Other methods should first find out what parts of the interference are, and then modify them according to the actual situation.
Shielding wire and grounding is good, basically can eliminate the possibility of radio frequency interference, then it may be caused by conductive interference. The motor next to it should be more than just a motor. The front of the motor should have a drive device, such as a frequency converter. A filter, or reactor, such as a harmonic suppression device, is recommended to drive the device. At the same time, you can also try to add a magnetic loop filter to the power supply of the flow meter, or try the isolation transformer.
