The Ubbelohde capillary viscometer
The Ubbelohde capillary viscometer is a standardized test device in which a fixed test quantity of oil flows through a standardized capillary. The flow time required for this is a measure of the kinematic viscosity.
The Ubbelohde viscometer is characterized by high measuring accuracy due to the suspended sphere level, which compensates for the acting surface tensions.
| Characteristics | |
| Measuring range | 0.35 to 50,000 mm²/s (with different capillaries) |
| Measurement accuracy | +/- 0,5% |
| Filling quantity | approx. 15 ml |
| Flow time | > 200 s |
| Temperature range | 25 to 100° C (above with special bath fluids) |
| Possible tests |
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