| 摘要 |
The apparatus consists of a probe (2) with a deformable envelope containing an incompressible fluid (6), linked by a pipe (5) to a hollow cylindrical recipient (4), a system (7) for feeding a pressurized gas into (4), and a gauge (8) to determine the volume in (4). (4) has its upper and lower ends (14, 15) closed by plugs (12, 13), and (8) operates by ultrasound passing through the lower plastic stopper. The apparatus consists of a probe (2) with a deformable envelope containing an incompressible fluid (6), linked by a pipe (5) to a hollow cylindrical recipient (4), a system (7) for feeding a pressurized gas into the recipient, and a gauge (8) to determine the volume of fluid in the recipient. The cylindrical recipient is positioned vertically, with its upper and lower ends (14, 15) closed by plugs (12, 13), and the gauge (8) operates by ultrasound passing through the lower plastic stopper.
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