It is suitable for all liquid flow test of conductivity of greater than 5. Conductivity change does not affect the performance of the change. The flow meter has the long-term high accuracy of measurement. It actually is not affected by fluid physical properties. Measurement accuracy can be up to 1, 0.5. The flow meter is with no mechanical and moving parts, usually without maintenance. Convenient operation, the flow meter is set automatically according to the scope of 0 ~ 10 m/s, without change of measuring range.