2 Terms and definitions
The general terms used in this Document are in accordance with the International Vocabulary of Metrology — Basic and General Concepts and Associated Terms (VIM), OIML V 2-200:2012, and the International Vocabulary of Terms in Legal Metrology (VIML), OIML V 1:2013. Other terms specific to this Document are defined below.
base volume
constant reference volume that corresponds to the displacement of a full stroke of the displacer in the calibrated section
calibrated section
specified section in a prover defined with a pipe (or cylinder) and displacer(s) that has a constant crosssectional area
detector
contact sensor or a non-contact (optical or mechanical) sensor that is used to detect the position of the displacer
displacer
object (usually a sphere or a piston) that travels along with the liquid flowing through the prover and that is used to define the calibrated section