Pump-Transfer Cooler Filtration Unit
Pump-Transfer Cooler Filtration Unit
Pump-Transfer Cooler Filtration Unit
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5. GRAPHS FOR MOTOR-PUMP SELECTION<br />
.<br />
.<br />
VISCOSITY / TEMPERATURE GRAPH<br />
To DIN 51519 Viscosity index 50<br />
VISCOSITY / TEMPERATURE GRAPH<br />
Viscosity index 0 to 200, oil ISO VG 320<br />
100000<br />
kinematic viscosity in mm 2 /s<br />
kinematic viscosity in mm 2 /s<br />
10000<br />
1000<br />
100<br />
10<br />
VI = 200<br />
VI = 150<br />
VI = 100<br />
VI = 50<br />
VI = 0<br />
temperature in °C<br />
1<br />
0 10 20 30 40 50 60 70 80 90 100<br />
temperature in °C<br />
The viscosity index (VI) indicates how much the viscosity of the oil changes with temperature.<br />
The higher the viscosity index, the smaller the change in viscosity in relation to the temperature.<br />
⇒ Oils with a high viscosity index have a lower viscosity at low temperatures than oils with a low viscosity index.<br />
6
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