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Description of main equipment for dry calibration test work

Important equipment for dry calibration experiments is water flow calibration installation, bell-type gas flow calibration installation, gauge gas flow calibration installation, and sonic nozzle gas flow calibration installation and coherent electronics.
1. Water flow calibration installation
The dynamic volume method and the standard table method are adopted. The installed system is not surely 0.15% and 0.5%. The experiment uses two lines of DN50 and DN100, and the maximum flow breakup is 37m3/h and 140m3/h. The dry calibration experiment task of the DN50 liquid vortex flowmeter was performed on this installation.
2. Bell-type gas flow calibration installation
The installed volume is 2000L, the task pressure is 5kPa, the system uncertainty is 0.5%, the cumulative flow uncertainty is 0.2%; the maximum brake flow is 350m3/h, the DN50 gas vortex flowmeter dry calibration experiment The task is important to do this on the installation.
3. Specification method gas flow calibration installation
The installation can supply the experiment of the vortex flowmeter above DN100 under normal temperature and normal pressure conditions, and the DN100 gas vortex flowmeter in the dry calibration experiment task is important in the installation.
The maximum flow rate of the DN100 vortex flowmeter can reach 1200m3/h, and the installation system is not sure that the soil is 0.5%.
4. Sonic nozzle gas flow specification installation
The installation is a pressurized gas calibration installation with a maximum mission pressure of 0.6 MPa and a maximum flow of 2200 kg/h. This installation provides a verification experiment of the DN50 gas vortex flowmeter under different pressures. .
The above four sets of verification installations are certified and authorized by the national technical supervision organization. All experiments were carried out according to the prior industry standard ZBN12 008 (now JB/79249-1999) and the national metrological verification procedure JJG620-89 and now JJG-198-94 "speed flowmeter measurement verification rules.

Trust, under the joint efforts of development, manufacturing, and application, under the care, care and support of all aspects, the young vortex flowmeter will be developed and expanded, becoming an important member of the flow meter family.

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