Efficient Multiparameter Measurements on Lubricants and Oils

Density and the refractive index play a key role in the production of fuels, waxes, lubricants and similar materials. These products are often highly viscous and therefore not always easy to measure. To cope with these challenges, Anton Paar (Austria) has developed Modulyzer for Petro. In its basic configuration, Modulyzer for Petro is a combination of a DMA 4100/4500 M density meter or a DMA 5000 M (the most accurate density meter in the world), an Abbemat-HP/WR refractometer and an Xsample Heated for the efficient, flexible and modular measurement of highly viscous samples with measurement temperatures of up to 80 °C.

The magazine, the needle and all hoses are electrically preheated to a set temperature. After the measurement, Xsample Heated recovers the sample and automatically cleans the system. Sample handling is made easy and convenient for the user. The automatic filling warning generated by FillingCheck on the DMA Generation M density meters, the check of the filling procedure via U-View and the temperature management with ThermoBalance result in stable and reliable measuring results.

Modulyzer for Petro provides features such as the API compensation of the density measurement. In the case of measurements at high sample temperatures, after which results should also be shown for a reference temperature such as 20 °C, this can save time and costs. These time savings are especially important regarding intermediate products, which have to be measured in short times and with great accuracy. If the measurement results do not accord with specified values, corrective actions can be taken immediately.