The method is also functional by filling {HEAD ~ the chamber A} to pressure {TAIL ~ p0x} and having in the measuring chamber C a gas to be measured, e.g. px and py 
to pressure
The method is also functional by filling { HEAD ~ the chamber A } to pressure { TAIL ~ p0x } and having in the measuring chamber C a gas to be measured , e.g. px and py
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH