1. Characteristic of the turbine flow meter The turbine flow meter is a kind of flow instrument with a lot of advantages. To sum up, it has the following characteristics. A accuracy is high The accuracy of the turbine flow meter is in 0. 5- 0. About 1%. Within the range of linear flow, even if the flow changes, accumulating flow accuracy will not be reduced either. And within short time, the reproducing of the turbine flow meter can reach 0. 05% . 2 range to wide Turbine the ranges of flow meter to can Damien 8- 10. Under same requirements, turbine flow meter maximum to flow magnitude greater than a lot of other flow meters.

3 has a good adaptability

The turbine flow meter can be completed and closed the structure, its signal of rotational speed does not contact measurement, so is apt to realize to be able to bear designing under high pressure.

If turbine and bearing of the flow meter choose the small material of high temperature resistant, hot coefficient of expansion, can use within the range of wider temperature. At this moment, the sectional change of circulating that it is mainly it that should notice and revise its instrument coefficient:

K =K0[1- R 2 Ht-to