| 摘要 |
For detecting the occurrence or the imminence of a change of phase within a fluid, a predetermined quantity of heat is generated within thermally conducting means in contact with the fluid. The temperature of said means is measured and compared with a reference temperature so selected as to correspond to the apparition of a second phase within said fluid. In particular, effective or imminent apparition of gas bubbles can be detected in a liquid wherein the temperature of the thermally conducting means has a reference temperature close to the temperature of the liquid.
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