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IEC 60654-1 Ed. 2.0 b:1993
Industrial-process measurement and control equipment - Operating conditions - Part 1: Climatic conditions
Lists environmental climatic conditions e.g. air temperature humidity and air pressure in specified locations to which land-based and offshore industrial-process measurement and control systems may be exposed during operation, during periods when they are installed but inactive and during storage or transportation.
International Electrotechnical Commission [iec]