REFERENCE MEASURING ELEMENT Russian patent published in 2019 - IPC G01F25/00 G01F19/00 

FIELD: measurement.

SUBSTANCE: invention can be used for verification of fluid volume or volume measuring devices. Standard measuring tank includes a reservoir, a measuring neck equipped with an optical limit level sensor and a flanged branch pipe with a cover, an antifoaming agent, a working liquid supplying working fluid to the tank bottom and a drain device. Filling device comprises a branch pipe with a shut-off device and a horizontal pipeline section with a sampling cock, rigidly fixed to side surface of tank through its top and bottom reinforcement rings upward vertical section of pipeline, which contains sight-hole (dioptre), descending section of pipeline with valve for calibration of capacity scale at level of upper part of measuring neck. Ascending and descending sections of the pipeline are connected by a branch pipe at angle of 180°. Tap is connected with defoamer by tube. Said overflow tube is cut by its one end into vertical upward section of pipeline, and by its other end into vertical descending section. Discharge device includes a branch pipe with a shut-off device and a pipeline equipped with a sight-hole and a valve for control of liquid draining completeness.

EFFECT: technical result is provision of standard accuracy of measurements, operational safety and reduction of labour intensity during calibration.

1 cl, 4 dwg