Measurement of partial pressure of a component of a mixture in a drying process comprising inert gas and vapor of at least one fluid with good accuracy in measurement range between 0.02 mbar and 2 mbar

摘要

Measurement of the partial pressure of a component of a mixture in a drying process comprising an inert gas and the vapor of at least one fluid with good accuracy in the measurement range between 0.02 mbar and 2 mbar. The mixture is compressed with a compression factor in an evacuatable measurement chamber, the volume of which is reduced. The compression process is effected until condensation of the vapor occurs. From the values obtained of the total pressure (p1 tot (T), p1.1 tot (T), of the temperature (T) and the compression factor (KF1,KF1.1) at least during and/or after onset of condensation and possibly the total pressure (p0 tot (T)) before condensation and/or the condensation pressure (1w(T)) of the vapor at the condensation temperature (T), the partial pressure (P OL(T)), p(OW (T)) of the components (L,W) is determined.