VALI uses DVR and state-of-the-art modelling techniques to transform process data into consistent, accurate and reliable information, that can help to operate processes correctly, detect problems in time, and eliminate inefficiencies. VALI automatically computes key performance indicators with a high level of accuracy and reliability. Users can add their own constraints, rules and equations to the process model in a user-friendly way.


When process parameters cannot be measured directly, VALI uses a soft sensing system to calculate their value. The same technique can be used to reduce the investment in expensive measurement equipment, such as multiphase flow meters in the oil and gas industry.

VALI installations include applications on continuous processes in a wide range of industry sectors where accurate measurement data is critical.

The modeling capabilities of ValiStudio allow creation of all the different units and streams needed for an accurate representation of the process. These units can be grouped in separate Process Flow Diagrams for a clear visualization of the process.

The modeling toolbox contains all the different kinds of process equipment (pumps, heat exchangers, etc.).

A thermodynamic library gives access to a list of chemical compounds with their respective thermodynamic parameters for accurate calculations. VALI is also compliant with CAPE-OPEN.

Process measurements are introduced through tags, with their respective uncertainties.

Additional equations can be implemented through an internal programming code called FLEX, allowing complex performance calculations.


Workflows are configured to run the process model online with a configurable aggregation time going from 15 minutes to 1 day. The graphical representation of these workflows is a flow chart where each object represents one step of the workflow.

A workflow toolbox gives access to the different functionalities :

  • Data acquisition from different historian systems,
  • Manual data input interface,
  • Calculations,
  • Data storage to different types of database,
  • Email sending,
  • File management.

The workflow history gives the status of the executed runs with their penalty and quality indexes.


An integrated reporting tool has been developed to provide reporting features such as trends or charts. These reports are seamlessly integrated with the model, allowing a continuity between reporting and modeling inside the application.

  • The reporting toolbox allows configuration of the reports with trends, tables, conditional formatting, formulas, pie charts, etc.
  • Multiple VALI databases can be used within the same report.
  • Results stored in the database can be accessed through other softwares such as Microsoft Excel.

All the reports configured inside the ValiStudio interface can be made accessible through any web browser thanks to a new web-reporting tool. All the application reports can be viewed in this web-reporting interface without a ValiStudio installation. As with ValiStudio, the user can navigate between the dates, consult the latest calculated data, or easily print reports.



A Last Run Analysis section allows analysis of different relevant information about the last run calculated inside the ValiStudio interface:

  • Suspected tags provide a list of measurements showing suspect behavior (data acquisition problems, filtered tags, flagged tags, etc.).
  • Messages give access to the different logs provided by the engine during the calculations (warnings, serious errors, fatal errors).
  • Sensitivity Analysis gives access to meaningful information about the run and the tags (gain distribution of the run, chi-square test, dependencies between the tags, Gaussian distribution of the tags, etc.).
  • Results section gives access to the run report and its different pieces of information (tags values, bounds, log, etc.)
  • Debug information allows the user to identify possible causes of non convergence with residues, tags and variables values for each iteration of the calculation.


Please fill the form. Our experts will get back to you.