Standard Test Method: the vortex flowmeter is used as the standard to be connected with the flow meter. By comparing the readings of two flowmeters, the error of the vortex flowmeter is obtained. The characteristics of the standard meter flow meter calibration device: a standard meter method is suitable for measuring various fluids, liquids, gases, including various viscosity liquids. When the B is used to verify the value, the flow meter of the standard meter is installed in the same closed pipe system in series. C as a standard meter vortex flowmeter can be the same as the various types of flow meter, can also be different. D can be used to check the vortex flow timing with the standard meter method, which can not cut off the flow of gas or liquid. The standard meter method is easy to realize automation, airtight safety, no pollution to the environment. The E has the advantages of small size, light weight, simple structure, convenient operation, easy transportation and installation, and low cost.