9. Additional Information
66
Principle of viscosity correction
The oscillation-type density meter is under the influence of viscosity. Viscosity
compensation corrects the effect of viscosity. Since low viscous standard
liquid is used for calibration liquid (reference), measurement of highly viscous
sample would turn out to be higher than true value.
The effect of viscosity when measured is as follow:
Low-viscosity liquid (water, Japanese sake, whisky): less than 5mPa·s
The effect: 0.0001g/cm
3
or less
Viscous liquid (olive oil, tomato juice, engine oil): 5~1000mPa·s
The effect: 0.0001~0.0008g/cm
3
High-viscosity liquid (honey, mayonnaise, hair conditioner): over 1000 mPa·s
The effect: 0.0008 g/cm
3
ca.
Summary of Contents for DA-640
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