DIN EN 12405-1:2022-02
Gas meters - Conversion devices - Part 1: Volume conversion; German version EN 12405-1:2021 / Note: This standard is part of the DVGW body of rules.
| Fecha edición: |
2022-02-01
En Vigor
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| Idiomas disponibles: | Inglés, Alemán |
| Resumen: | 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 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. 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 document, 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 3.1.20.1 and 3.1.20.2. 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. |
| Keywords: | CE marking|Conformity|Conformity testing|Definitions|Design|Electrical engineering|Electronic instruments|Electronic measuring devices|Gas meters|Gas technology|Gas-supply meters|Instrument transformers|Marking|Measuring ranges|Pressure|Pressure transmitter|Production|Quantitative measurement|Quantity translators|Real gas factors|Safety|Specification (approval)|Temperature|Testing|Translators|Transmitters|Volume |
| ICS: | 27.075 - Tecnologías del hidrógeno, 91.140.40 - Sistemas de suministro de gas |
| CTN: | |
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Equivalencia Internacional |
Idéntica EN 12405-1:2021 |
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Reemplazo Normas |
Reemplaza a DIN EN 12405-1:2018-12 Reemplaza a DIN EN 12405-1:2019-04 |
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