METROLOGICAL BENCH FOR VERIFICATION, CALIBRATION OF LEVEL GAUGES AND LEVEL INDICATORS Russian patent published in 2019 - IPC G01F25/00 

FIELD: physics.

SUBSTANCE: invention is intended for verification, calibration, calibration and other metrological tests of level gauges and level indicators. Test bench includes a linear part and a movable part, as well as a reflector and means for moving the reflector. At that, on linear part is rigidly fixed instrument table with metal shield for connection of level indicator or level gauge, as well as precision guide rails for moving rigid milled base by means of four precision trolleys. On the movable part the bearing frame is rigidly fixed, movement of which is carried out by means of the precision step drive by means of the reinforced toothed polyurethane belt, and on which the reflector is fixed. At that, for measurement of distance from fixed metal shield to moved reflector stand contains high-precision laser interferometer or laser range finder installed on optical adjustable platform. Besides, test bench incorporates measuring unit to control temperature, humidity and ambient pressure.

EFFECT: reducing calibration, calibration and calibration errors of level and level gauges.

7 cl, 2 dwg