METROLOGICAL STAND FOR VERIFICATION, CALIBRATION OF LEVELS AND LEVEL ALARMS

摘要

The invention relates to measuring equipment and is intended for verification, calibration, calibration and other metrological tests of level meters and level switches. A stand for checking level gauges or level indicators, including a linear part with elements for connecting verified level indicators and a moving part, the linear part being presented in the form of metal profiles fixed to supports, in addition, the stand contains a reflector and means for moving the reflector in a horizontal plane along the stationary linear part of the stand, and the level indicator or level gauge being verified is installed so that its horizontal axis is perpendicular to the plane of the reflector, characterized in that the instrument cabinet with a metal shield is rigidly fixed on the linear part to connect the level indicator or level gauge, and precision guides are mounted rails for moving a rigid milled base by means of four precision trolleys, and on the moving part a support frame is rigidly fixed, the movement of which is carried out by means of a precision step drive with the help of reinforced gears a polyurethane belt, and on which a reflector is attached, and for measuring the distance from a fixed metal shield to a movable reflector, the stand contains a high-precision laser interferometer or laser range finder mounted on an optical adjustable platform, while the optical axis of the laser interferometer or laser range finder is located strictly perpendicular to the supporting frame , and metal profiles are rigidly fixed on adjustable supports, and a measuring unit for monitoring temperature, humidity and ambient pressure is introduced into the stand.