| 摘要 |
<p>The invention relates to an apparatus for determining the yeast activity. According to the invention, the apparatus comprises a base structure () consisting of a fermentation vessel () provided with a thread wherein there is introduced the fermenting mass () consisting of water, glucose and yeast, the fermentation vessel () having a Peltier type electrical thermostating system (), at the top of the vessel () there being provided a measuring structure () comprising, in its turn, a resilient stainless steel membrane () upon which there acts the carbon dioxide released by the yeast fermentation process, two electroresistive sensors () for measuring the deformation () of the membrane, a temperature sensor (), a sealing membrane () made of silicone rubber, the structure () being connected by means of a cable () with an electronic unit () for acquiring, processing and displaying data provided with three displays: for displaying the carbon dioxide pressure value, the fermenting mass temperature and time. In order to carry out complex tests in various working conditions, the apparatus is also provided with an optional structure comprising a multiplexing unit () whereto there may be connected in parallel a plurality of base structures () identical to the base structure (), an electronic computer () equipped with a specialized computing program and an electronic printer ().</p> |
