System for measuring the flow rate of a fluid medium

A system for measuring a flow rate of a fluid medium, the system comprising:

• an input line of a fluid medium configured to be associated in fluid communication with a supply line of said medium,
• an output line of said fluid medium configured to be associated in fluid communication with a line for distribution of said medium, and
• measurement means configured to measure a flow rate of the fluid medium in transit which are interposed between said input line and said output line,
• electronic management and control means functionally associated with said measurement means,
• wherein said measurement means comprise
• at least two connecting lines arranged in parallel between said input line and said output line,
• a flowmeter in fluid communication with each one of said connecting lines, a corresponding interval of measurable flow rate values stored in said electronic means being associated with each flowmeter,
• valve means configured to directionally control with at least three ways and at least two operating positions, which are interposed between said at least two connecting lines and said input line or said output line and are adapted to open, in each one of said at least two operating positions, a fluid communication between one of said at least two connecting lines and said input line or said output line,
• the electronic management and control means being functionally associated with the flowmeters and with the valve means and being adapted to maintain/switch an operating position of said valve means as a function of a flow rate value detected by the flowmeter having the corresponding connecting line in fluid communication with the input line or the output line by virtue of the valve means, in order to select the flowmeter with which a measurable flow rate value interval comprising the detected flow rate value is associated, opening the fluid communication between the corresponding connecting line and the input line or the output line.