Determination of viscosity

Quality control in realistic conditions

Aviation in the 21st century makes serious demands of engineering and materials: Modern jets fly at 33,000 feet, where temperatures of -60 °C prevail. In this case, it needs to be ensured that viscosity levels do not increase during long-haul flights to a level over a critical value or that the paraffin begins flocculating as a result of the extreme temperature changes.

For tests in the lab, viscosity is examined in realistic conditions. In combination with the powerful DLK 45 flow cooler or the Proline RP 890 cooling thermostat, the PVL 15 viscothermostats for two measuring stations and PVL 24 for four measuring stations are designed for working at temperatures between -40 °C and -60 °C.


LAUDA solutions for this application


Technical Data LAUDA Proline PVL 15
Product Name LAUDA Proline PVL 15 LAUDA Proline PVL 24 LAUDA Proline PVL 15 C
Working temperature min. °C 30 30 30
Working temperature max. °C 100 100 100
Interface(s)     RS-232/485
Temperature stability ±K 0.01 0.01 0.01
Bath volume max. L 15 24 15
Bath depth mm 320 320 320
Heater power kW 3.50 3.50 3.50
Pump pressure max. bar 0.80 0.80 0.80
Pump flow max. (pressure) L/min 25 25 25