GALGA DE CONTRASTE DE UN CONTADOR DE LIQUIDO, TAL COMO POR EJEMPLO DE GAS LICUADO

摘要

1. A calibrating gauge for a liquid meter such as for example a liquefied-gas meter, of the type comprising essentially a piston each face of which is provided with a rod and which is mounted freely sliding in a cylinder defining a reference volume and connected to the said meter to allow measuring the discrepancy between the value of the volume of liquid displayed by the meter and the volume of liquid actually delivered by the latter, characterized in that each said rod is hollow and communicates permanently with the chamber of the cylinder.