Viscosity Sensors How to Achieve Easy Integration With Process Analytics for Concentration and Viscosity Analysis

Author / Editor: Gerald Schwarz / Dominik Stephan

Process measuring sensors are important tools for process optimization, process monitoring and quality control and must meet many requirements. Measuring accuracy, low maintenance and calibration requirements and robust design, but also easy integration into the plant are important factors to take into account.

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The inline viscosity sensor works with a rotation principle and can be mounted directly in pipes or tanks
The inline viscosity sensor works with a rotation principle and can be mounted directly in pipes or tanks
(Picture: Anton Paar)

Process sensors make a significant contribution to increasing a plant’s productivity. Due to the continuous inline measurement of the quality parameters, production plants can operate at the best possible conditions. The consumption of raw materials and energy is effectively optimized and the production is running at maximum capacity.

Process Measuring Technology: An Investment That Makes Sense

Process sensors are also essential for quality control. Laboratory measurements (like the gathering, preparing and measuring of samples from the production) have their disadvantages: They only give information about a single point in time and the time delay for the analysis can be considerable. This could mean that in case of the detection of a parameter outside the permitted tolerance limits, the reaction comes late and damage may be considerable.

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Altering a Plant is More Costly than State of the Art Sensors

Sample transport and measurement are often time consuming. Furthermore, the quality of laboratory analysis depends on many external influences, like sampling, temperature compensation, personnel, etc. Nevertheless, a good laboratory measurement is always the basis for checking the process data and should at least have the same accuracy as the process measurement.

The costs for altering a plant are often higher than the cost of new sensor equipment. The investment should not exceed a certain limit and therefore the sensors should easily integrate and have low operating costs. Costs for investment, maintenance and calibration are decisive when considering process measuring technology.