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A thermohydrograph is a scientific instrument that silmultaneously records both temperature and relative humidity in graph form for a preset period of time. These instruments are usually portable and are often used in rooms in art galleries and museums so that the conservators can ensure that the air conditioning is operating correctly [because the preservation of the exhibits is aided by automatically adjusting the air conditioning to maintain close control of temperature and relative humidity and it is necessary to know whether those conditions are being maintained]. These instruments are mechanical with clockwork drives to rotate a drum to which the graph paper is attached. They are relatively delicate and require regular calibration to ensure accuracy. In recent years [from approx 2000] these instruments have to some extent been superseded by relatively more robust and accurate self-contained portable electronic temperature and relative humidity recording instruments from which the recorded data can be downloaded, stored and presented in graph form. Also in recent years it has been possible to monitor temperature and relative humidity with fixed instruments connected to computerised building monitoring systems [BMS] which allow an alarm to be raised in the event that a fault in the air condiortiong system causes the room temperature and or humidity to vary beyond preset limits.
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What is the codes for getting free IMVU male clothes?
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