1. Old pipe and server scaling for pipeline.
2. The pipe material is pyknotic and symmetrical,and other materials that is bad acoustical conductivity;
3. The surface of pipe wall have coating like paint;
4. The application is not full water pipe;
5. The inner of pipe is with a lot of air bubbles or big solids percent;
6. Straight pipe/tube is not long enough.
7. The place of installing the meter is near to the upstream of pipe which installed a valve;
8. Converter or noise interference on site.
9. The medium measured is a type of mixture or certain liquid with bad acoustical conductivity,such as raw sewage,mud,slurry,etc.
10. The liquid of pipe’s flow direction is from top to bottom or installed it as the higher place of pipe,causing the water of pipe is not filled or bubbles heaped up the installation point.
Post time: Jun-30-2022