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Inline process viscometers for monitoring product quality

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article image Allows continuous feedback from the pipe or tank, telling the operator the viscosity of the liquid at the processing conditions.

RHEOLOGY Solutions has released the Marimex Industries range of inline viscometers, measuring viscosity in the pipe or vessel where the fluids are actually processed.

One of the most important variables for effectively processing fluids with minimised costs and maximised throughput is the viscosity of the fluid. Viscosity is often also a primary indicator of the quality of the product. Traditionally, viscosity measurements have been taken offline in the QC laboratory. It is now possible to obtain inline viscosity readings on a continuous basis for QA/QC during processing.

A live demonstration of the Marimex ViscoScope inline viscometer will be shown in Sydney during Food Pro in July and in Melbourne during Ausplas in September 2005. The equipment operates by imposing a small amplitude displacement at constant resonance frequency (constant shear rate) and measuring the power required to maintain it. The equipment has no moving parts and is maintenance-free. Construction materials can include Hastalloy C22 and it is also possible to use Teflon-coated sensors.

Inline sensors such as those from Marimex allow continuous feedback from the pipe or tank, telling the operator the viscosity of the liquid at the processing conditions, allowing him to adjust pumping, mixing or heating rates to maintain a target product quality.

The system consists of a sensor and associated electronics which have been designed for process environments. The sensor does not employ any moving parts and is maintenance-free. The viscosity is obtained with the torsional oscillation principle. The sensor has a rugged design and high resistance against foreign influences, and can be applied in many manufacturing applications including chemical, petrochemical, pharmaceutical, coatings and food industries.

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