Sensors are fine but the flow is too low

1. Because the paint and rust outside the pipeline have not been completely removed. Solution: Remove the pipeline and install the sensor from the beginning.
2. Uneven pipeline surface or ultrasonic flow meter equipment at welding joints. Solution: Grind the pipeline flat or away from the weld seam.
3. The roundness of the pipeline is poor, the inner and outer surfaces are not lubricated, and there is scaling on the lining of the pipeline. If the pipe material is cast iron, this situation may occur.
Solution:
Select local materials or liners for lubricating pipes such as steel pipes for internal and external surfaces.