RESIDUAL GAS VOLUME MEASURING DEVICE AND RESIDUAL GAS VOLUME MEASURING METHOD

摘要

Provided is a residual gas volume measuring device capable of measuring a residual gas volume with high accuracy, while inhibiting deterioration of a pump that pressurizes an airtight container. The present invention comprises: a second pipe 50 that allows communication between an airtight container 10 filled with a basic carbon dioxide absorbing liquid and a second storage unit 40 for storing water for pressurization, the second pipe 50 having a section on the airtight container 10 side thereof filled with the carbon dioxide absorbing liquid and having a section on the second storage unit 40 side thereof filled with the water for pressurization; and a pump P1 that is disposed in the section of the second pipe 50 filled with the water for pressurization. The pump P1 delivers the water for pressurization in the second pipe 50 to the second storage unit 40 side before a residual gas is introduced from a container B to be inspected to the airtight container 10, and delivers the water for pressurization in the second pipe 50 to the airtight container 10 side after the residual gas is introduced from the container B to be inspected to the airtight container 10.