TN337 – Baseline stability at constant temperature Private content

Some experiments carried out at constant temperature consists of monitoring the calorimeter output over a long time period and measurements of minor thermal variations. To be sure that the measurement is significant it implies that the calorimetric output with an inert sample must be very stable. The curve shown below is the type of curve that could be expected on using the standard equipment without any special devices like main stabilizers, thermostated water circuit or air conditioners : it has been carried out in a normal room but under the following conditions : no heating system, closed shutter, no air stream in the room : the general rule is to avoid any rapid room temperature variation.

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