| 摘要 |
A stand-alone sensing unit (24) for fitting to a sealed container (10) which is partially filled with a liquid which gives rise to variations of a given property of the container headspace (16), comprising a housing (24) containing a transducer responsive to the given property and a data processor, and having a boss (28) which engages in the top of a chimney (18) of a rubber septum (12) which seals the container, thereby to cause the septum to be punctured and open communication between the container headspace and the transducer, which delivers signals to the data processor, in turn feeding signals to a visual indicating means (26) forming part of the sensing unit.
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