Patent ID: 11874199
Assignee: ANEOLIA
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 11:
12. A process for testing a sample via a gas stream, the process comprising:
exhausting a reference gas of a reference gas source as a leakage gas along an exhaust path originating from the reference gas source and terminating at an opening linked to the sample, wherein the sample is a closed enclosure and the reference gas is distinct from external air;
measuring the pressure of the leakage gas along the exhaust path,
measuring a parameter representing the mass flow rate of the leakage gas along the exhaust path, wherein the measuring of the parameter representing the mass flow rate is a measurement by a thermal mass flowmeter using thermal conductivity, and
determining a dimension of a leak hole in a surface of the closed enclosure, based on the measurement of the parameter representing the mass flow rate along the exhaust path from the thermal mass flowmeter configured to use thermal conductivity, and measured on the reference gas exhausted from the reference gas source and having a given thermal conductivity.