Norm

NEN-EN 12405-1:2005 en

Gasmeters - Herleidingsinstrumenten - Deel 1: Herleiding van volume

  • Deze norm is ingetrokken sinds 05-11-2010

110,00

Over deze norm

Status Ingetrokken
Aantal pagina's 94
Commissie Debiet- en hoeveelheidsmeting
Gepubliceerd op 01-05-2005
Taal Engels
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). EN 12405-2 for energy conversion is in preparation. 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 3.1.18.1 and 3.1.18.2. 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.

Details

ICS-code 91.140.40
Nederlandse titel Gasmeters - Herleidingsinstrumenten - Deel 1: Herleiding van volume
Engelse titel Gas meters - Conversion devices - Part 1: Volume conversion
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Normatieve verwijzingen
  • 2004/22/EG, Meetinstrumenten

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