MEASURING DEVICE FOR CONTROLLING THE FILL LEVEL OF A LIQUID-GAS MIXTURE USING A LIQUID FEED VALVE IN A VESSEL, COMPRISING AT LEAST ONE VERTICAL FLUID STANDPIPE WHICH IS INSTALLED ON THE SIDE EXTERNAL WALL OF THE VESSEL AND WHICH IS CONNECTED IN A FLUID-BEARING MANNER WITH THE INTERNAL CHAMBER OF THE VESSEL VIA HORIZONTAL, TUBE-LIKE, HYDRAULIC DEVICES, WHEREIN A FIRST LOWER LEVEL HYDRAULIC DEVICE IS INSTALLED CLOSE TO THE BOTTOM OF THE VESSEL SO THAT THE FILL LEVEL IN THE FLUID STANDPIPE CHANGES WITH THAT IN THE VESSEL, AND A SECOND HYDRAULIC DEVICE IS PROVIDED ABOVE THE SET POINT OF THE FILL LEVEL IN THE VESSEL SO THAT THE FILL LEVEL IN THE FLUID STANDPIPE CHANGES WHEN THE SET POINT FOR THE FILL LEVEL IN THE VESSEL, WHICH CAN BE FREELY SELECTED, IS EXCEEDED AND THE MEASURING DEVICE IS EQUIPPED WITH A DISPLAY AND CONTROL UNIT WHICH HAS A CONTROLLING CONNECTION WITH THE LIQUID FEED VALVE OF THE VESSEL, AND THE VESSEL INCLUDES INLET AND OUTLET LINES FOR LIQUIDS AND GASES, AND THE FLUID STANDPIPE IS EQUIPPED WITH AT LEAST A FURTHER THIRD TUBE-LIKE HYDRAULIC DEVICE WHICH PROTRUDES INTO THE VESSEL HORIZONTALLY, WHICH IS INSTALLED AT THE HEIGHT OF THE SET POINT OR BELOW THE SET POINT OF THE FILL LEVEL IN THE VESSEL, AND THE FIRST LOWER LEVEL HYDRAULIC DEVICE, IN RELATION TO THE OTHER HYDRAULIC DEVICES PROVIDED, IS DESIGNED TO THROTTLE THE REFLUX FLOW. (FIGURE 2)
