Flowmeter calibration technology and equipment is to ensure accurate measurement of the flow meter an important part of the wind tunnel test is the differential pressure flow meter fluid measurement verification of the most effective means. I designed and built a special flow meter dedicated wind tunnel equipment, the flow meter to test the performance indicators. Need to verify the sensor into the wind tunnel, set a different wind speed, the flowmeter design flow and the standard flow of the wind tunnel calibration, according to the data obtained on the flow meter to be amended to further improve the flow meter quality, Ensure that the flow meter is accurate. Here my company and the city test department jointly set up the northern Liaoning region flow verification authority, greatly guarantee the quality of the product.

 

Wind tunnel parameters

Wind tunnel structure: closed DC type;

Wind speed range: 0 ~ 100m / s;

Control accuracy: ≤ ± 0.2% (FS);

Airflow stability: ≤ ± 0.5%;

Flow angle: <0.8 °;

Flow turbulence: <0.5%;

Flow field inhomogeneity: ≤ ± 0.6%;

Flow range: (30 ~ 5678) m / h;

Pipe diameter range: DN50 ~ DN300;

Uncertainty of expansion: 0.48%, K = 2;

Flow stability: 0.51%.