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Viscosity sensor

24/7 Viscosity Monitoring


The VISCOSITY SENSOR enables continuous monitoring of viscosity, relative dielectric number and temperature of lubricating and hydraulic oils in order to provide effective real-time assessment of the oil condition. The constant oil analysis helps to detect immediately any occurring changes as well as to estimate the lubricant quality and engine oil ageing.

Technical Data

  • Measuring range:
    SAW-dynamic viscosity: 8 – 400 mm²/s
    Rel. dielectric number: 1 – 7
    Temperature: -20 °C to +85 °C
  • Accuracy:
    SAW-dynamic viscosity: +/- 5 mm²/s
    Rel. dielectric number: +/- 0.02
    Temperature: +/- 0.5 K
  • Voltage: 9 – 33 VDC
  • Max. fluid pressure: 50 bar
  • Protection class: IP 67

The relevant parameters, namely SAW-dynamic viscosity, relative dielectric number and temperature are measured and displayed on the special display unit DATALOGGER in real-time mode. After the learning phase of the VISCOSITY SENSOR is finished, the obtained values are also available at a reference temperature of 40 °C along with the oil characteristics at current temperature.




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