BS EN 12405-1:2018 Gas meters. Conversion devices. Volume conversion

BS EN 12405-1:2018

Gas meters. Conversion devices. Volume conversion

Status : Current, Work in hand   Published : October 2018



This European Standard specifies the requirements and tests for the construction, performance, safety and conformity of gas-volume electronic conversion devices associated to gas meters, used to measure volumes of fuel gases of the 1st and 2nd families according to EN 437.

This European Standard is intended for type testing, the detailed relevant provisions of which are given in Annex A.

Only three kinds of conversion are treated in this European Standard:

— conversion as a function of temperature only (called T conversion);

— conversion as a function of the pressure and of the temperature with constant compression factor (called PT conversion);

— conversion as a function of the pressure, the temperature and taking into account the compression factor (called PTZ conversion).

This document is not relevant to temperature conversion integrated into gas meters which only indicate the converted volume.

EN 12405-2 applies for energy conversion.

Gas-volume conversion devices consist of a calculator and a temperature transducer or a calculator, a temperature transducer and a pressure transducer locally installed.

For application of this European Standard, a conversion device may be, as a choice of the manufacturer, considered as a complete instrument (Type 1) or made of separate elements (Type 2), according to the definitions given in and

In this last case, the provisions concerning pressure transducers, temperature sensors and temperature transducers are given in Annexes B, C and D respectively.

Any conversion device can provide an error curve correction for a gas meter.

NOTE When rendering an account to an end user the readings from the conversion device can be used in conjunction with the readings from a gas meter conforming to EN 1359, EN 12480, or EN 12261, as appropriate, or to any other appropriate and relevant international or national standard for gas meters, without prejudice of national regulations.

Standard NumberBS EN 12405-1:2018
TitleGas meters. Conversion devices. Volume conversion
StatusCurrent, Work in hand
Publication Date18 October 2018
Normative References(Required to achieve compliance to this standard)EN 61000-4-2, EN 60068-2-78, EN 61000-4-29, EN 61000-4-8, EN 60068-2-2, EN 60730-1:2016, EN 61000-4-11, EN 61000-4-3, EN 60068-2-1, EN 61000-4-4, EN 1776, EN 55011, EN 60079-6, EN 60068-2-30, EN 60950-1, EN 60079-2, EN 60068-2-31, EN 61000-4-6, EN 60079-0, EN 60068-2-64, EN 60079-5, EN 60529, EN 60079-7, EN 437, EN 60751, EN 60079-1, EN 60079-25, EN 60079-11, EN 60068-3-1, EN 61000-4-5
Informative References(Provided for Information)ISO 5168, EN 50160, EN 12261, EN 24006, EN 61000-4-1, EN 1359, EN 12480, EN 22768-1
ReplacesBS EN 12405-1:2005+A2:2010
International RelationshipsEN 12405-1:2018
Draft Superseded By17/30356731 DC
DescriptorsConversion, Calculators, Probes, Volume flowmeters, Volume, Performance, 1st family gases, Gas-supply meters, 2nd family gases, Electronic equipment and components, Electronically-operated devices, Transducers, Type testing, Approval testing
Title in FrenchCompteurs de gaz. Dispositifs de conversion Conversion de volume
Title in GermanGaszähler. Umwerter Volumenumwertung
ISBN978 0 580 97644 5
File Size2.402 MB

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