Differential pressure type vortex mass flow meter

The utility model belongs to the field of fluid measurement apparatus, especially relates to a differential pressure type vortex mass flow meter for measuring mass and flow of gas or steam. The mass flow Rho is measured by sequentially installing a rectifier, a vortex generator body, a detection probe, a taper type orifice; detecting connection between the probe and the vortex signal amplifier; detecting the flow signal Q; coinciding the central axis of the taper type orifice with the central axis of the measurement tube; assembling an upstream impulse pipe and a downstream impulse pipe on front and rear side of the taper type orifice respectively, connecting the upstream impulse pipe and the high pressure end of the differential pressure transmitter, connecting the downstream impulse pipeand the low pressure end of the differential pressure transmitter, and obtaining the differential pressure Delta P through the differential pressure; inputting Q and Delta P into the a flow integrating instrument for integra