Data Needed to Run Reconciliation Analysis

Sources of measurement information can be from many different systems and through many different methods. Some of the places that Sigmafine can receive information are:

• PI/Control System
• Material Transfers
• Measurement Device specifications
• Measurement Tolerances
• Strapping Tables
• Other Databases (Finance, Operations, etc)
• Manually Collected Data
• Lab System Data

When possible, it is recommended that you automate the data collection into the PI Data Archive system. Too much reliance on manually-collected input data will create untimely results. Manual inputs can be collected through Pimsoft’s client tools. Data in other databases can also be referenced or copied through interfaces and connectors.

We suggest you observe the following rules when setting up a Model for analysis with Sigmafine:

• Use a systematic approach to identify the location and calibration setup for each instrument in the model.
• Associate every instrument with the correct flow, and make sure that temperature and specific gravity corrections are applied to flow measurements if needed. Check whether this function of correction is performed by your control system or historian. If it is not, the data correction must be done within Sigmafine. The Sigmafine Data Reference does many of these corrections.
• Determine the calibration tolerance of each instrument (you can use ISO 5167 for orifice meters) or refer to meter data sheets and manufacturers.
• After you achieve full unit connectivity, examine the entire drawing, and then run a balance analysis so Sigmafine can identify flows and connections that cannot be solved.

Depending on the analysis that is required, Sigmafine will have specific information needs. Check that the information is provided in a timely manner so that the analysis can occur at time when all information is available. The following table contains a summary of the analysis rule requirements.

Analysis Rule Requirements

Analysis Rule	Requirement
Sigmafine Balance	Mass measurements resolved for all flows, inventory elements (tanks) and transfer elements. Mass tolerances (uncertainties) for each of the measurements. If volumes or volume rates come from field measurements, then a density is also requisite to resolve mass.General Requirement: Minimize the number of unmeasured flows in the model.
Component Balance	Component masses or volumes must be known for all measured flows, inventory elements (tanks) and transfer elements. Tolerances (uncertainties) for each of the components should also be known.
Composition Tracking	This analysis uses the results for a Mass or a Volume Balance and has their requirements. In addition, the initial composition of the inventories should be known as a starting point for the calculation.

The following data is needed to run the reconciliation:

• Computing Environment
• Description
• Information on interfaces to data historians
• Tank Data- Data source and unit of measurement for:
• Level measurements
• Density
• material code
• Temperature
• Pressure
• Analyzer Data- Data source and unit of measurement for:
• Analyzer compositions
• Receipt and Shipment Data- Data source and unit of measurement for:
• Receipts
• Shipments