Overview
ABSTRACT
This article describes the techniques used to verify fiscal gas meters in a regulatory framework. More specifically, it presents the different technologies of flowmetering (turbine, rotary pistons, diaphragm, ultrasonic, Vortex and Coriolis effects) and the reference meter (sound nozzle, master meter), their techniques of construction, the methods used to test them, their implementation and the uncertainties associated with the determination of the reference values.
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Fares BEN RAYANA: Gas metering expertise referent - ENGIE LAB-CRIGEN, ENGIE, Saint-Denis, France - Editor's note: This article is a reworking of one previously written by Frédéric VULOVIC.
INTRODUCTION
This article describes the means used to verify transactional gas meters within the regulatory framework. In particular, it presents the different techniques for measuring flow or volume standards, their construction rules, the methods for calibrating them, their implementation and the uncertainties associated with determining reference values.
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KEYWORDS
Positive displacement flowmetering | Sonic nozzle | Ultrasonic flowmetering | Vortex flowmetering | Coriolis flowmetering | Air and gas flowmetering
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Calibration and periodic verification of gas volume meters
Control gasometers
Bibliography
Websites
French metrology :
http://www.metrologie-francaise.fr/fr/organisation/laboratoires-associes.asp
Bureau International des Poids et Mesures (BIPM) :
International...
Events
The European Flow Measurement Workshop is held in Europe in partnership with CEESI (USA) every year: http://www.efmws.eu/
The North Sea Flow Measurement Workshop takes place every year between Norway and Scotland.
Standards and norms
- Mesure de débit de gaz au moyen de Venturi-tuyères en régime critique. - NF EN ISO 9300 - 2005
- Compteurs de volume de gaz à parois déformables. - NF EN 1359 - 1999
- Mesure de débit des fluides au moyen d'appareils déprimogènes insérés dans des conduites en charge de section circulaire. - NF EN ISO 5167 - 2003
- Compteurs de gaz à turbine. - NF EN 12261 - 2002
- Compteurs de gaz à déplacement...
Regulations
Decree no. 72-866 of September 6, 1972 regulating the category of measuring instruments: gas volume meters. Consolidated version as of May 17, 2017.
Arrêté du 21 octobre 2010 relatif aux compteurs de gaz combustible (NOR : ECEI1025327A). Version consolidée au 21 septembre 2017.
Arrêté du 2 novembre 2016 relatif aux instruments de mesure (NOR: ECFI1628264A). Consolidated version...
Directory
Manufacturers with a calibration bench for gas meters:
ELSTER-INSTROMET (Honeywell), Lognes :
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