| OELCHECK test instrument: | CINRG - CS-HVA-1 Houillon Viscometer Automation System, VH1 Houillon Viscometers |
| Sample quantity: | 5 ml (kinematic viscosity) |
| Unit: | mm²/s for viscosity, none for VI (viscosity index) |
| Test result: | Viscosity 40 °C, viscosity 100 °C, VI (viscosity index) |
| Result range: | Viscosity 40 °C: 1 - 2,000 mm²/s Viscosity 100 °C: 0.8 - 200 mm²/s Viscosity index: 0 - 499 |
| Analysis for: | all oils and fuels |
| Brief description: | The determination of viscosity is used to describe the flow behavior of liquids. The CINRG - CS-HVA-1 combines 4 temperature control baths into one measuring system. Each bath is set to 40°C or 100 °C and contains 4 measuring stations with capillary viscometers. The time required for the oil to pass through a specific measuring section is converted into the kinematic viscosity at 40 °C and at 100 °C using the capillary constants. The viscosity values at 40 °C and 100 °C are used to calculate the VI (viscosity index). The higher the VI, the lower the temperature-induced change in viscosity. |
| Statement: | The change in viscosity allows conclusions to be drawn about mixing with other oils, contamination e.g. by fuel or soot, shearing of VI improvers or oil thickening e.g. by oxidation. |
| Underlying test standard: | DIN 51659-3, DIN ISO 2909, ASTM D2270, ASTM D7279 |
