| 摘要 |
PURPOSE:To measure a volume simply and conveniently, by using two chambers, whose volumes are known, enclosing a body to be measured in one chamber, measuring the temperature and pressure of each chamber, then communicating both chambers, measuring the temperature and pressure, and performing an operation process. CONSTITUTION:A body to be measured (z) is enclosed in a main chamber 1. A closing valve 3 is closed so that the main chamber 1 and a subsidiary chamber 2 are shut off. A closing valve 4 is opened and an oxygen is supplied into the subsidiary chamber 2 through a pump mechanism 5. The inside of the chamber 2 is pessurized and the pressure, which is different from that in the main chamber 1, is set. Under this state, the pressures and the temperatures of the main chamber 1 and the subsidiary chamber 2 are measured. Then the closing valve 3 is opened and the main chamber 1 and the subsidiary chamber 2 are communicated. Then the temperature and pressure under the balanced state are measured. The volume of the body to be measured (z) is computed by using the obtained measured values and an equation of state of gas. Thus the volume is measured simply and conveniently. |
