TUBE-PISTON INSTALLATION FOR CALIBRATION AND CHECKING METERS AND FLOWMETERS Russian patent published in 2008 - IPC G01F25/00 

FIELD: invention refers to measuring technique.

SUBSTANCE: in tubular body of installation there is piston placed with possibility to travel in calibrated section connected with main system of hydraulic lines. Detectors of initial and end positions of piston are connected with control block with which are also connected locking elements and locking means placed in system of hydraulic lines in such way as to provide possibility to change direction of flow in calibrated section on opposite. Locking means are two in-series installed controlled locking elements between which there are means connected with control block to provide possibility to control passages. In preferable execution of installation in quality of piston they choose ball piston. At that end parts of body are fulfilled curved downward for providing possibility of placing and holding in them of piston during changes of direction of flow in calibrated section. Installation is simple in manufacturing compact arrangement providing increase of accuracy and reliability of checking (graduation) at its usage in quality of reference measuring system.

EFFECT: increases accuracy of measuring.

6 cl, 1 dwg