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Standards Worldwide
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EN 50057:1991-06

Electrical apparatus for the detection and measurement of combustible gases; performance requirements for group II apparatus indicating up to 100 % lower explosive limit

German title
Elektrische Geräte für das Aufspüren und die Messung brennbarer Gase; Anforderungen an das Betriebsverhalten von Geräten der Gruppe II mit einem Meßbereich bis zu 100 % der unteren Explosionsgrenze
Publication date
1991-06
Original language
English
Publication date
1991-06
Original language
English

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