Abstract:A portable oil flow standard device is introduced in this paper. This device can be used as a standard to calibrate all kinds of oil flowmeter (volumetric flowmeter, turbine flowmeter, mass flowmeter and other type flowmeter). By equipping high precision mass flowmeter and automatic control system, the on-line automatic calibration, measurement and data processing are realized in series with the checked table in different environment, so as to achieve the goal of calibration traceability. Its design structure is simple and reasonable, high degree of automation, small size, easy to carry, and has certain promotional value.