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Density measurement redefined

15 April 2019

Anton Paar believes it has redefined digital density measurement with the introduction of a new measuring principle – the Pulsed Excitation Method (PEM), and the launch of a new range of digital density meters.

The measuring principle – Pulsed Excitation Method – is said to provide unmatched sensitivity regarding bubbles, particles, and sample homogeneity. It is also said to provide the density meter with three times more information about the sample’s characteristics than any conventional method.
The measuring cell promises stable results that are unaffected by any external influences such as frequently changing users with different filling styles.  This results in density meters with high precision. The Pulsed Excitation Method (PEM) offers  a viscosity correction of results for high viscosity samples which is two times better, and therefore gives unparalleled repeatability and reproducibility.
It also offers viscosity insight, For Newtonian fluids, PEM delivers the viscosity in addition to the density value (accuracy: 5% in the range from 10 mPa·s to 3,000 mPa·s. Due to PEM, filling error detection is now also available for instruments with metal oscillators for measurements up to 150°C

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