Microcomputer Automatic Control Gas Flow Calibration Equipment Of DN15-DN150

Gas flow calibration equipment of DN15～DN150 positive pressure sonic nozzle method and microcomputer automatic control s

Introduction: The system uses air as the medium, the critical flow venturi nozzle as the standard meter, and the flow meter is verified or tested by means of a vacuum pump to generate negative pressure in the system. The calibration diameter is DN15-DN200 (later can be extended to DN400), the test flow range is 1-7000m3/h (later can be extended to 10000m3/h), and the device expansion uncertainty is better than 0.3% (K=2)

Main technical parameters:

- Calibrated caliber size: DN15～DN150

- Calibration method: sonic nozzle method

- Uncertainty of equipment expansion: master meter method 0.33%,0.5%

- Gas source pressure: ≤0.8MPa；

- Structural style: tiling

Main technical features:

- This calibration equipment is applied to the calibration of flowmeters of which medium is positive pressure air

- Sonic nozzle is adopted as the standard;

- Computer automatic control of flow and data acquisition system are adopted