1. What is the distance between the transducers and the transmitter ?

2. The material of pipe, pipeline wall thickness and pipeline diameter.

3. The life of Pipeline;

4. Type of fluid, whether it contains impurities, bubbles, and the pipe is full or not full of liquids.

5. Fluid temperature;

6. Whether the installation site has interference sources (such as frequency conversion, strong magnetic field, etc.);

7. Whether The power supply and voltage used are stable;

9. Whether the wireless or wire communication transmittion, which of communication.

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