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Phone: 0415-6279972 / 6279973
Fax: 0415-6279975
Email: ddbest@qianhualy.com
Address: Baoquan Road, Zhenxing District, Dandong City, Liaoning Province
No. 20 (Lingang Industrial Park)
Postcode: 118009

Qinghai Metrology Testing Institute

Project Name: Sonic Nozzle Gas Flow Standard Device

The main technical parameters: Device expansion uncertainty: 0.3% (K = 2)

Nozzle uncertainty: 0.2%

Flow measurement range: 1-4000Nm3 / h

Calibration caliber: DN25 ~ DN200

Project description: This project is a set of standard device for gas flow of sonic nozzle method according to the needs of Qinghai Province Metrology and Testing Institute. Complete knot
The structure adopts a tiled structure design. Compatible pipelines are simple and convenient with a push-pull tube change. The air passes through the front and rear straight pipe sections, the clamp device,
The stagnation container, the sonic nozzle, and the manifold enter the vacuum pump. The microcomputer automatic verification control system is adopted.
The instrument completes the automatic verification of the flow meter, and achieves the verification and calibration of critical-flow sonic nozzle junction gas.