KERN ABT-A01 Operating Manual

Contents

6.2.5 Glass Plummet for Measuring FluidsTo save test fluids used for density determination of fluids, use a small glass beakerand an accordingly sized glass plummet. However, it needs to be pointed that a largeglass plummet achieves higher accuracy.It is desirable that the buoyancy and the volume of the glass plummet are determinedas accurately as possible. For the determination of fluid density these results areapplied to the common denominator as well as the numerator of the formula.6.3 General information6.3.1 Density / Relative DensityRelative density follows from the weight of a specimen divided by the weight of water(at 4° Celsius) of the same volume. For this reason relative density does not have aunit. Density equals mass divided by volume.The application of the relative density instead of the density of a fluid in a formulaproduces an incorrect result. In the case of fluids only their density isphysically meaningful.6.3.2 Drift of Balance DisplayThe drifting of a balance does not influence the final result of the densitydetermination although the shown weight of weighing in air is affected. Accuratevalues are merely required if the density of fluids is determined by means of a glassplummet.For this purpose some of the models carry out auto-adjustment.40 ABT-A01-BA-defsi-0710

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