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VALI is an online Data Validation and Reconciliation application for the enhancement of data quality with regards to coherency, reliability and availability.

This solution is based on a process mapping included in a first principle model in which mass, energy, performances and user’s constraints are fully embedded. Together with a rigorous thermodynamic package including equations of state, this model links all kind of plant process data (pressure, temperature, flow, etc.) defined with their uncertainty. Using the redundancy of these raw measurements, an interdependent network of information is obtained in order to extract a single set of coherent measurements (reconciliation) by closing the mass and energy balances.
This model can give the estimation for unmeasured variables and hence to act as a Soft Sensor.
The online VALI application provides this advanced coherency treatment on an automated workflow.
VALI gives the Customer access to a reliable, accurate and coherent picture of the installation leading to the automatic detection of problems (e.g. sensors failures) and inefficiencies occurring on site.

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