A rotary piston gas meter ELSTER IRM-3-DUO G650 will be used to compare low pressure test facilities over the flow range (20 ÷ 1000) m3/h. The gas meter G650 will be calibrated at 10 flow rates: 1000 m3/h, 800 m3/h, 650 m3/h, 450 m3/h, 350 m3/h, 250 m3/h, 160 m3/h, 100 m3/h, 50 m3/h, 20 m3/h.
The laboratories should carry out the calibration using their normal procedures.
If laboratories are not able to cover all the flow rates they may calibrate the meter over part of the flow range.
Each laboratory will be responsible for the transfer of the meter to the next laboratory.
Test gas: air
Test pressure: near atmospheric
Test temperature: (19,5 ÷ 23,5) °C
Final Report 2015-12-08
The project has been completed and the report can be downloaded here>>