| 摘要 |
The invention relates to a method for determining the current filling level of a liquid, preferably a calibrating, quality control, or cleaning fluid, or was te water, in a container, far example of an analyzer, where an immersion pipe is dippe d into the liquid in the container to be filled or drained, which immersion pi pe is connected to a pumping device via a tube system. The invention proposes that the pressure p in the tube system should be measured and increased, starting from the ambient pressure p0, until a first discontinuous pressure change occurs at pressure p1 due to the liquid column in the immersion pipe being forced o ut of the pipe, and/or that the pressure p in the tube system should be decreased until the liquid column in the immersion pipe reaches a change in cross-section of the immersion pipe, which change is situated above the maximum filling level of the liquid, such that a second discontinuous pressure change occurs at pressure p2 due to the liquid column reaching the change in cross-section, and that the pressure difference between ambient pressure p0 and the pressure p1 or p2 at one of the two pressure discontinuities or the time t1 or t2 until one of the tw o pressure discontinuities is reached, should tie recorded and used to determi ne the current filling level of the container.
|
