球探首页

You are here: Dandong Beit → Products Bell-type gas flow standard device system
Product Categories
Thermal energy meter verification device
Bell-type gas flow standard device
Special equipment for flow standard device
Instrumentation products
customer service
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

Chinese People's Liberation Army No. 5713 Factory

Project name: Bell-type gas flow standard device system

The main technical parameters: Device expansion uncertainty: 0.2%

Bell cover uncertainty: 0.2%

Flow measurement range: 0.006-120m3 / h

Calibration caliber: DN4 ~ DN50
Project description: This device is a standard gas flow device with a constant pressure source (and gives a standard volume). Using the principle of force balance
The weight of the bell jar exceeds a constant weight of the counterweight (this constant forms the residual pressure of the bell jar) and operates. Keep pressure inside by pressure compensation mechanism
A certain value, which does not change with the depth of the bell jar immersed in the sealing liquid. Based on the effective volume in the bell jar, when the bell jar is lowered, the air in the bell jar
The test pipeline is discharged to the instrument under test, and the volume of the gas discharged from the bell cover is used to compare the indication value of the instrument under test to determine the error of the indication value.