SR EN 12405-1:2021

Gas meters - Conversion devices - Part 1: Volume conversion

This document 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 document 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 document: - 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. 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 document, a con

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General information

Status : Valid
Approval date : 11/29/2021
Number of pages : 122
ICS : 91.140.40 Gas supply systems
Technical Committee : 109 - Measurement of fluid flow

Relations with other standards:

Replaces SR EN 12405-1:2019
Normative reference SR EN 437:2019
Normative reference SR EN 1776:2016
Normative reference SR EN 16723-1:2017
Normative reference SR EN 16726+A1:2018
Normative reference SR EN 55011:2016
Normative reference SR EN 55011:2016/A1:2017
Normative reference SR EN 55011:2016/A11:2020
Normative reference SR EN 60068-2-1:2007
Normative reference SR EN 60068-2-2:2008
Normative reference SR EN 60068-2-30:2006
Normative reference SR EN 60068-2-31:2009
Normative reference SR EN 60068-2-64:2009
Normative reference SR EN 60068-2-64:2009/A1:2020
Normative reference SR EN 60068-2-78:2013
Normative reference SR EN 60068-3-1:2012
Normative reference SR EN IEC 60079-0:2018
Normative reference SR EN 60079-1:2015
Normative reference SR EN 60079-1:2015/AC:2018
Normative reference SR EN 60079-2:2015
Normative reference SR EN 60079-5:2015
Normative reference SR EN 60079-6:2016
Normative reference SR EN 60079-7:2016
Normative reference SR EN 60079-11:2012
Normative reference SR EN 60079-25:2011
Normative reference SR EN 60079-25:2011/AC:2013
Normative reference SR EN 60529:1995
Normative reference SR EN 60529:1995/A1:2003
Normative reference SR EN 60529:1995/A2:2015
Normative reference SR EN 60529:1995/A2:2015/AC:2019
Normative reference SR EN 60529:1995/AC:2017
Normative reference SR EN 60730-1:2016
Normative reference SR EN 60730-1:2016/A1:2019
Normative reference SR EN 60751:2009
Normative reference SR EN 60950-1:2006
Normative reference SR EN 60950-1:2006/A1:2011
Normative reference SR EN 60950-1:2006/A11:2009
Normative reference SR EN 60950-1:2006/A12:2011
Normative reference SR EN 60950-1:2006/A2:2014
Normative reference SR EN 61000-4-2:2009
Normative reference SR EN 61000-4-3:2006
Normative reference SR EN 61000-4-3:2006/A1:2008
Normative reference SR EN 61000-4-3:2006/A2:2011
Normative reference SR EN 61000-4-4:2013
Normative reference SR EN 61000-4-5:2015
Normative reference SR EN 61000-4-5:2015/A1:2018
Normative reference SR EN 61000-4-6:2014
Normative reference SR EN 61000-4-8:2010
Normative reference SR EN 61000-4-11:2005
Normative reference SR EN 61000-4-11:2005/A1:2018
Normative reference SR EN 61000-4-29:2002
Normative reference SR EN ISO 12213-2:2010
Normative reference SR EN ISO 12213-3:2010