STAND FOR THE DYNAMIC CALIBRATION OF CAPILLARY TUBES AND REDUCED DIAMETER CONDUITS IN ADIABATIC CONDITIONS

摘要

The invention relates to a stand for the dynamic calibration of capillary tubes and of rigid conduits with reduced diameter in adiabatic conditions, comprising two tanks (4, 10) for the working fluid, with the first tank (4) connected to an air compressor and having two dismountable junction connecting systems (a, b) located at the bottom of the tanks, in order to attach, by means of said systems, the ends of the capillary tube or conduit (9), two manometers for measuring the pressure of the working fluid at the input or output to/from the capillary tube and a rotameter for measuring the flow rate of the fluid. In order to determine exactly the fluid output pressure from of the capillary tube (9) there is also provided a differential manometer tube (22) connected by means of distributor (20) and some separation valves (19, 21) to the tank (10) in parallel with some similarly connected interchangeable rotameters (18) and for the calibration of capillary tubes and conducts (9) of various sizes, the tanks (4, 10) are collinearly hung by means of some supporting rods (26) and some guideways (25) to a linear supporting and guiding system (23).