Preparing power compensation systems for use

With power compensation DSC analysers there are two small furnaces and some specific practices to be aware of. 

Before starting and before turning on any sub-ambient accessories, inspect the furnaces to make sure that they are clean and the surrounding block is dry and free from condensation. Clean furnaces with a swab and suitable solvent, and complete this with a furnace burn-off in air at about 600°C or above. For this purpose, the furnace shouldbe opened to allow air access 

The imderside of the swing-away or rotating cover should be inspected from time to time to make sure that it is clean particularly if sublimation is suspected. If the guard rings beside the furnaces are contaminated these can be removed and cleaned. They should be replaced with the slot facing the purge gas exit port, which is situated centrally behind the furnaces. 

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