The working principle is based on the proven physics of Newton’s second law of motion, where F = m x a relates to a force “F” exerted on the slurry mass “m” and the resulting acceleration “a”. The density is defined as the slurry mass per unit of volume.

The instrument’s excitation system exerts forces with known amplitudes and frequencies onto the full crosssection of the slurry, while a set of accelerometers measures its resulting response.

Density fluctuations are easily tracked with high speed accelerometers, with practically immediate response time, an important aspect in quick-acting process control systems.