Customer Applications BETTER AIR MEANS BETTER PERFORMANCE We all know the situation: meetings where individuals‘ performance drops sharply. In most cases, this is a direct result of the poor quality of the air in the room. Uncomfortable situations like this need not arise. CO 2 dis- plays by Rotronic make it easy to measure air quality, and the results can be used to initiate the appropriate measures. In an enclosed room, some 25 to 35 cubic metres of fresh air per person per hour are needed, given normal activities. This ensures that the carbon dioxide (CO 2 ) content remains below 1,000 ppm (ppm = parts per million [value of the pro- portion of carbon dioxide in the air] ), and that the volatile substances exuded by humans are extracted to a sufficient degree. By comparison, the

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