SR EN 12405-3:2016

Gas meters - Conversion devices - Part 3: Flow computer

Part 3 of this European Standard specifies the requirements and tests for the construction, performance, safety and conformity of flow computers (FCs) used to meet the metrological and technical requirements of a high accuracy volume conversion device. They are used to determine volume of fuel gases, including those of the first and second families according to EN 437. For the purpose of this European Standard, only flow computers that are intended to operate with ultrasonic meters according to ISO 17089 1 or gas turbine meters conforming to EN 12261 are considered. For the purpose of this European Standard only classification classes E2 and M1 are considered for the flow computer calculator. FCs are equipped with external separate transducers for pressure and temperature which may be approved separately. The provisions concerning pressure and temperature transducers are given in Annex B and C. Requirements and tests are given for energy calculator in EN 12405 2.

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General information

Status : Valid
Approval date : 5/31/2016
Number of pages : 81
ICS : 91.140.40 Gas supply systems
Technical Committee : 109 - Measurement of fluid flow

Relations with other standards:

Normative reference SR EN 61000-4-5:2015
Normative reference SR EN 60068-2-30:2006
Normative reference SR EN 12405-2:2012
Normative reference SR EN 437+A1:2009
Normative reference SR EN 61000-4-2:2009
Normative reference SR EN 60079-7:2016
Normative reference SR EN 60068-2-31:2009
Normative reference SR EN 12261:2018
Normative reference SR EN 61000-4-8:2010
Normative reference SR EN 60529:1995/A1:2003
Normative reference SR EN 61000-4-29:2002
Normative reference SR EN 60068-2-64:2009
Normative reference SR EN 1776:2016
Normative reference SR EN 12405-1+A2:2011
Normative reference SR EN 60529:1995/A2:2015
Normative reference SR EN 60068-2-2:2008
Normative reference SR EN 61000-4-11:2005/A1:2018
Normative reference SR EN 62262:2004
Normative reference SR EN ISO 12213-2:2010
Normative reference SR EN ISO 12213-3:2010
Normative reference SR EN 62054-21:2005/A1:2017
Normative reference SR EN ISO 15970:2014
Normative reference SR EN 62054-21:2005
Normative reference SR EN ISO 6976:2017
Normative reference SR EN 60068-2-78:2013
Normative reference SR EN 62054-21:2005/A1:2017/AC:2018
Normative reference SR EN 61000-4-11:2005
Normative reference SR EN 60079-0:2013
Normative reference SR EN 60079-7:2016/A1:2018
Normative reference SR EN 61000-4-3:2006/A1:2008
Normative reference SR EN 60529:1995/AC:2017
Normative reference SR EN 60529:1995
Normative reference SR EN 60950-1:2006/A2:2014
Normative reference SR EN 60950-1:2006
Normative reference SR EN 61000-4-3:2006/A2:2011
Normative reference SR EN 60079-25:2011
Normative reference SR EN 60950-1:2006/A12:2011
Normative reference SR EN 60947-5-6:2001
Normative reference SR EN 61000-4-1:2007
Normative reference SR EN 61000-4-4:2013
Normative reference SR EN 60068-3-1:2012
Normative reference SR EN 60950-1:2006/A11:2009
Normative reference SR EN 55011:2016/A1:2017
Normative reference SR EN 60950-1:2006/C91:2010
Normative reference SR EN 61000-4-3:2006
Normative reference SR EN 60079-25:2011/AC:2013
Normative reference SR EN 60079-11:2012
Normative reference SR EN 60079-0:2013/A11:2014
Normative reference SR EN 60950-1:2006/A1:2011
Normative reference SR EN 60950-1:2006/AC:2011
Normative reference SR EN 61000-4-6:2014
Normative reference SR EN 55011:2016
Normative reference SR EN 61000-4-5:2015/A1:2018
Normative reference SR EN 60751:2009
Normative reference SR EN 60068-2-1:2007