The turbine flow meter is integrated with temperature, pressure and flow sensor as well as smart volume corrector. It is a new generation of measuring instrument with high precision and high reliability which features high performance on low pressure and high pressure metering as well as low sensitivity to various signal output method and flow disturbance. Thus, it is an excellent product in commercial use for gas metering. It has wide range of applications in flow control occasions and other non-corrosive gas metering as well as industrial gas metering, city pipeline gas metering, energy management, gas regulating station metering, etc.