Turbine Flow Meter is a main type of Impeller Flowmeter also including the Anemoscope and Water meter. it is made up of Sensor and Conversion-Show. The Sensor reacts to the average velocity of fluid with multi-blades rotor so as to speculating the flow value and the accumulative flow value. The velocity (or circles) of rotor can be picked up by the way of mechanism, electromagnetic induction, photo electricity, before displaying and transmitting the records by reading device.