LBQ-y type sound nozzle gas flow device selected in line with international standards (ISO9300) and national regulations (JJG620 - 1994) the critical flow Venturi nozzle as a flow standard for comparison of the flow meter test or tests. This is the solution of large, medium gas flow test of the economic and practical method.
The equipment has advanced technology, reasonable structure, stable performance, reliable, wide range of degree, high degree of automation, maintenance is simple and easy to operate and so on advantages.
1. State or province, city authorized measurement institutions or authorized test centers (stations) on the various types of gas flow meter pattern evaluation of new products (sample test), initial verification, periodic verification, certification and supervision of arbitration.
2. Petrochemical, metallurgy, electric power, gas and other industries in major cities in medium-sized metering centers (stations) on the acceptance of various types of gas flow meter repair or test.
3. Gas flow meter manufacturer's factory test and debug performance.
Working principle and main configurations:
1. Steady flow of negative pressure gas power source;
2. Sonic nozzle group and stagnant containers and back pressure vessels;
3. Be seized meter test bench and pipeline systems;
4. Pneumatic and auxiliary systems;
5. Data Acquisition and treatment system;
6. Computer and Control Department
The main parameters: Device expanded uncertainty: 0.3% - 0.5%