Use of a drip and/or expansion chamber.

摘要

Use of a drip and/or expansion chamber comprising a gas-permeable but liquid-tight membrane (46d) controlling the fluid level, the dry side of the membrane being connected to the outer atmosphere or a pressure-controlling device via a duct (48d). The use is characterized in that said drip and/or expansion chamber is being utilized so that said duct points vertically downwards so that any condensate formed runs away from the membrane and not towards the same.