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AVEVA™ PI System™ Feedback Portal

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Status No Status
Created by Guest
Created on Aug 19, 2022

Allow to configure the Delta UOMs in PSE

With the introduction of the property "Delta UOM", there is no way to control this in PSE. We need this to properly configure or modify UOM classes Refer to 2017SP2 release notes: 121485 A new property, DeltaUOM, has been added to the UOM object to allow applications to determine the appropriate unit for measuring the differences between two values.  For example, temperature units typically have a different unit to represent deltas because of the offset present in the conversion factors.
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  • Guest
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    Aug 19, 2022
    Please provide an example use case.
  • Guest
    Reply
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    Aug 19, 2022
    To anyone curious about controlling the delta UOM property - this is not configurable in a manual manner but determined automatically based on the abbreviations of the UOMs. Creating a UOM with an abbreviation of "delta " will automatically be used as the Delta UOM for that unit. For more detail see the AF SDK documentation Remarks on this property: https://docs.osisoft.com/bundle/af-sdk/page/html/P_OSIsoft_AF_UnitsOfMeasure_UOM_DeltaUOM.htm