# Directive 2014/32/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of measuring instruments (recast) (Text with EEA relevance), Division: DEFINITIONS

Extent: E+W+S+N.I.

Gas meter
An instrument designed to measure, memorise and display the quantity of fuel gas (volume or mass) that has passed it.
Conversion device
A device fitted to a gas meter that automatically converts the quantity measured at metering conditions into a quantity at base conditions.
Minimum flowrate (Qmin)
The lowest flowrate at which the gas meter provides indications that satisfy the requirements regarding maximum permissible error (MPE).
Maximum flowrate (Qmax)
The highest flowrate at which the gas meter provides indications that satisfy the requirements regarding MPE.
Transitional flowrate (Qt)
The transitional flowrate is the flowrate occurring between the maximum and minimum flowrates at which the flowrate range is divided into two zones, the ‘upper zone’ and the ‘lower zone’. Each zone has a characteristic MPE.
Overload Flowrate (Qr)
The overload flowrate is the highest flowrate at which the meter operates for a short period of time without deteriorating.
Base conditions
The specified conditions to which the measured quantity of fluid is converted.

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Source: https://www.legislation.gov.uk/eudr/2014/32/annex/IV/division/2 (the official version)
Page: https://openlegislation.uk/eu-directive-2014-32/annex-IV/division-2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.