| 摘要 |
This invention makes it possible to measure in situ the volume mass of fluids contained in tanks, in particular aggressive, nuclear, and dangerous fluids, without the use of any electric voltage. The device contains two bubble tubes (10, 20) whose lower ends (19, 29) are connected to each other by a sampling tube, in this case the second bubble tube (20), thus containing a single sampling opening (28). In this way, the fluid used for the two measurements is the same, and these latter are made in similar conditions. A third bubble tube (30) can be fitted underneath, providing a third pressure measure for measuring level height. The device as a whole is connected to a controlled source (40) of gas under pressure with means for detecting and measuring pressure (42), means (50) for calculating the volume mass rho of the fluid and the height (HC) of the immersion level (C).
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