TDF-II differential pressure flow meter adopts digital sensor, low power consumption and other technologies to develop a new generation of differential pressure flow meter with local flow, pressure, differential pressure and temperature display, which is used for natural gas flow measurement. It can be equipped with throttling elements (standard orifice/Venturi tube/wedge orifice), temperature sensor, pressure sensor, differential pressure sensor, differential pressure flow accumulation meter according to user's needs. It can be widely used in oil and gas field natural gas production and petroleum, chemical, power, metallurgy and other industries natural gas flow measurement.