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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

Liaoning Provincial Institute of Metrology (National Gas Meter Verification Center)

Project Name: Sonic Nozzle Gas Flow Standard Device

The main technical parameters: Device expansion uncertainty: 0.25% (Sonic nozzle uncertainty 0.15%) (K = 2)

Test pipeline range: DN25 ~ DN300

Flow range: 1-6000Nm3 / h

Project description: This project is a set of standard equipment for gas flow of sonic nozzle method according to the needs of Liaoning Institute of Metrology. Complete knot
The structure adopts a tiled structure design. The DN200-300 pipeline adopts a push-pull type pipe replacement method, which is simple and convenient. The air source uses a vacuum pump, and the standard device is
Sonic nozzle. The air enters the vacuum pump through the front and rear straight pipe sections, the clamp device, the stagnation container, the sonic nozzle, and the manifold. And use microcomputer automatic
Verification control system is mainly used for verification of large caliber gas meters and gas flow meters.