Patent ID: 8863571

Claim:
A filling level meter ( 4 ) for membrane gasometers ( 1 ) that include at least one accumulation chamber (C 1 ), arranged for containing a gas, that comprise an impermeable flexible membrane ( 2 ) that moves between two positions corresponding to the chamber being totally full and totally empty, wherein said meter ( 4 ) comprises: an instrument ( 12 ) connectable to a fixed element ( 3 , 9 ), arranged for generating a signal of measurement of a physical value that corresponds to a quantity of gas contained in said accumulation chamber (C 1 ); means for processing and displaying ( 5 ) the value of the quantity of gas corresponding to said generated signal; and a filiform, flexible means ( 6 ) for connecting said instrument ( 12 ) and said membrane ( 2 ), wherein said filiform, flexible means ( 6 ) comprises at least one portion constituted by a plurality of helical springs ( 7 ) that are arranged either in series or in parallel.