Patent ID: 11874151
Assignee: SAIPEM S.A.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A process for determining the volume of liquid remaining Vr inside a flexible pouch initially filled with a known volume Vi of a liquid to be consumed and provided with means for dispensing the liquid to be consumed, the process comprising:
placing the flexible pouch inside a rigid envelope initially filled with a known volume V1 of a first measuring liquid having an electrical conductivity C1;
during the dispensing of a volume VA of liquid to be consumed, admitting inside the rigid envelope the same volume VA of a second measuring liquid present outside the rigid envelope to compensate for the loss of volume due to the dispensing of the volume VA of liquid to be consumed and to maintain the pressure balance of the assembly, the second measuring liquid having an electrical conductivity C2 different from the electrical conductivity C1 of the first measuring liquid;
measuring the electrical conductivity CM of the mixture of the first and second measuring liquids present inside the rigid envelope;
determining the volume VA of liquid to be consumed that has been dispensed from the measurement of electrical conductivity C3; and
calculating the volume Vr of liquid to be consumed remaining inside the pouch from the volumes Vi and VA.