دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: 1. a vessel of known size, often equipped with a thermometer, used to determine or to compare densities of solids or liquids. 2. in core analysis, the cylindrical steel chamber filled with mercury used to measure the bulk volume of a core sample. When a core sample is placed in the pycnometer, the mercury that it displaces spills into a dish and is weighed. By dividing the weight of the displaced mercury by the density of the mercury, the bulk volume of the sample can be determined.