ISO 8222:2020 pdf download – Petroleum measurement systems —Calibration – Volumetric measures,proving tanks and field measures(including formulae for properties of liquids and materials).
standard measure
volumetric measure which is designed to meet the requirements of regulatory standards
Note Ito entry: Examples of regulatory standards are OIML R 120. Measurement Instruments Directive (MID) and NIST 105-3.
standard volume base volume
volume expressed as being at standard conditions
strike measure
brim measure where the volume is defined from the top edge of the neck which has been designed to be struck by sliding a ground glass disk over it to leave a consistent volume within the measure
test measure
hand portable volumetric measure up to 20 I capacity
Note ito entry: A test measure can be inverted to drain or be fitted with a bottom drain.
Note 2 to entry: A test measure can aLso be non-portable, in a fixed frame or on a vehicle. It may in some cases be cbsslfled as a prover tank.
metal pocket which protrudes through, or Is attached to. the wall of a pipe or volumetric measure to hold a temperature-measuring device
volume to contain
standard volume of liquid a measure contains with respect to its reference line or datum when filled from a clean dry condition
volume to deliver
standard volume of liquid which can be withdrawn from or filled into a pre-wetted measure with respect to its reference line or datum and following specified drainage times and procedures
Note Ito entry: A wet condition Is obtained by felling the measure and draining It for the specified drain time and procedure.
Note 2 to entry: The volume to deliver is always less than the volume to contain due to the volume of residual liquid left on the walls of the measure after the specified drain time.
Note 3 to entry: A measure marked with a volume to deliver can be used either w withdraw or to fill volumes as long as the wetting and drainage procedures are followed.
technique for using or calibrating a volumetric measure by filling from top or bottom with liquid from the device under test or the reference
Note ito entry: The reference may be volumetric or gravimetric.
Note 2 to entry: ‘In’ is the term adopted by EURAMET guide cg2lW.
water draw Ex
technique for using or calibrating a volumetric measure by withdrawing tiquid from the measure into the device under test or the reference
Note I to entry: The reference maybe volumetric or gravi metric.
Note 2 to entry: ‘Water draw’ is usually applied to the calibration of pipe provers.
Note 3 to entry: ‘Es Is the term adopted by ELJRAMF.T guide cg21l2l.
metrological traceability
property of a measuring result whereby the result can be related to a reference through a documented unbroken chain of calibrations, each contributing to the measurement uncertainty
ISOURCE; VIM;2012, 2,411
transfer point
point or location in a fluid transfer where the quantity and accountability of the fluid passes from one measurement system to another
non-negative parameter characterizing the dispersion of the quantity values attributed to a measurand based on the information used
ISOURCE: VIM:2012. 2.261
Note I to entry: The uncertainty Is normally expressed as a half width range along with the probability distribution with that range. It can be expressed as a value or as a percentage of the perceived true value.
volunietric measure
measure used to provide an accurate measure of a volume, hence providing a calibration reference for other volume-measuring devices, such as pipe displacement provers or flowmeters
water pour
technique for calibrating a measure by decanting liquid from a reference measure or a gravimetric system to a device under test
wet measure
volumetric measure which has been wetted and drained before use In accordance with defined drain times and procedures given in the calibration certificate and specification
portion of the internal surface of a volumetric measure which has been in contact with the liquid during use
device, usually a horizontal edge, where a consistent liquid level is established to provide a datum.