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Electrical apparatus for the detection and measurement of oxygen - Performance requirements and test methods; German version EN 50104:2002/A1:2004
German title
Elektrische Geräte für die Detektion und Messung von Sauerstoff - Anforderungen an das Betriebsverhalten und Prüfverfahren; Deutsche Fassung EN 50104:2002/A1:2004
Please get in touch with the relevant contact person at DIN if you have problems understanding the content of the standard or need advice on how to apply it.