Equalizing valve for equalizing a pressure for a measurement of a fluid sample under atmospheric pressure, measuring arrangement and method for determining a property of a fluid sample

摘要

The invention relates to a compensating valve for equalizing a pressure for a measurement of a fluid sample under atmospheric pressure with a valve housing, a valve piston longitudinally movable in the valve housing, a sample feed, a sample discharge and an opening to a free atmosphere, the valve piston along a longitudinal axis between a first position and a second position is movably accommodated in the valve housing, the sample supply being fluidly connected to the sample discharge by means of the valve piston in the first position and the sample discharge being connected to the opening to a free atmosphere in a second position. The invention also relates to a measuring arrangement for determining a property of a fluid sample by means of a chemical analysis, wherein the fluid sample can be fed to an analysis device, and a method for determining a property of a fluid sample with an analysis device under atmospheric pressure.