The second stage shall consist of:
- an examination of the conformity of the measuring system,including the meter and ancillary equipment,
- a metrological examination of the meter and ancillary equipment in the measuring system,
- an operating test on the gas eliminator, if fitted; it shall not be necessary to check whether the maximum permissible errors for this device as provided for in 1.6 have been exceeded, inspection of the adjustment of the required pressure maintenance device,
- verification of variations in the internal volume of hoses in full-hose systems,
- determination of residual quantities in empty-hose systems.