Le présent document spécifie les exigences et les méthodes d'essai de type relatives aux détendeurs débitmètres intégrés utilisés pour le soudage, le coupage et les techniques connexes, pour les gaz comprimés jusqu'à 300 bar et le CO2.
La présente norme fixe les conditions de construction et de fonctionnement auxquelles doivent satisfaire les détendeurs avec débitmètres employés sur des bouteilles de gaz ou mélanges de gaz liquéfiés ou comprimés pour les applications des procédés de soudage sous protection gazeuse par exemple TIG, soudage plasma, MIG, MAG, MOG.
ISO 2503:2009 specifies requirements for single or two-stage pressure regulators without flow-metering devices for connection to gas cylinders used for compressed gases up to 300 bar (30 MPa), dissolved acetylene, liquefied petroleum gases (LPG), methylacetylene‑propadiene mixtures (MPS), and carbon dioxide (CO2), for use in welding, cutting and allied processes. It does not cover pressure regulators having a nominal outlet pressure p2 > 20 bar. ISO 2503:2009 also specifies requirements for single or two-stage pressure regulators with flow-metering devices for connection to gas cylinders used for compressed gases or mixtures up to 300 bar (30 MPa), and carbon dioxide (CO2), for use in welding, cutting and allied processes. Typical processes using this equipment are: tungsten inert-gas arc welding (TIG), metal-arc inert-gas welding (MIG), metal-arc active-gas welding (MAG), plasma arc welding, tubular-cored-wiretubular-cored-wire welding and plasma cutting. Annex B gives examples of flow-control systems and their flow-measuring devices.
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