BS EN 12405-3:2015 - Gas meters. Conversion devices. Flow computer

BS EN 12405-3:2015

Gas meters. Conversion devices. Flow computer

Status : Current   Published : December 2015



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.

Standard NumberBS EN 12405-3:2015
TitleGas meters. Conversion devices. Flow computer
Publication Date31 December 2015
Normative References(Required to achieve compliance to this standard)EN 437, EN 1776, EN 12261, EN 12405-1:2005+A2:2010, EN 12405-2, EN 55011, EN 60068-2-1, IEC 60068-2-1, EN 60068-2-2, IEC 60068-2-2, EN 60068-2-30, IEC 60068-2-30, EN 60068-2-31, IEC 60068-2-31, EN 60068-2-64, IEC 60068-2-64, EN 60068-2-78, IEC 60068-2-78, EN 60068-3-1, IEC 60068-3-1, EN 60079-0, IEC 60079-0, EN 60079-7, IEC 60079-7, EN 60079-11, IEC 60079-11, EN 60079-25, IEC 60079-25, EN 60529, IEC 60529, EN 60751, IEC 60751, EN 60947-5-6, IEC 60947-5-6, EN 60950-1, IEC 60950-1, EN 61000-4-1, IEC 61000-4-1, EN 61000-4-2, IEC 61000-4-2, EN 61000-4-3, IEC 61000-4-3, EN 61000-4-4, IEC 61000-4-4, EN 61000-4-5, IEC 61000-4-5, EN 61000-4-6, IEC 61000-4-6, EN 61000-4-8, IEC 61000-4-8, EN 61000-4-11, IEC 61000-4-11, EN 61000-4-29, IEC 61000-4-29, EN 62054-21, IEC 62054-21, EN 62262, IEC 62262, EN ISO 6976, ISO 6976, EN ISO 12213-2:2009, ISO 12213-2:2006, EN ISO 12213-3:2009, ISO 12213-3:2006, EN ISO 15970, ISO 15970, IEC 61520, ISO 17089-1, ISO/IEC/IEEE 60559
Informative References(Provided for Information)EN 22768-1: 1993, EN 24006:1993ISO, 4006:1991, EN 50160, ISO 5168, ISO 7498-2:1989, EN ISO 13443
International RelationshipsEN 12405-3:2015
Draft Superseded By13/30289289 DC
DescriptorsGas-supply meters, Conversion, Marking, Installation, Transducers, Direct energy conversion, Volume, Testing, Electronic equipment and components, Electronically-operated devices, Type testing
Title in FrenchCompteurs de gaz. Dispositifs de conversion. Calculateurs de débit
Title in GermanGaszähler. Umwerter. Flowcomputer
ISBN978 0 580 84180 4
File Size1.656 MB

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