7.2.4.17 Pset_FlowInstrumentPHistory

PSET_PERFORMANCEDRIVEN / IfcFlowInstrument

Flow Instrument PHistory: Properties for history of flow instrument values. HISTORY: Added in IFC4.

buildingSMART Data Dictionary

PSD-XML

Name	Type	Description
Value	P_REFERENCEVALUE / IfcTimeSeries / IfcReal	Value Indicates measured values over time which may be recorded continuously or only when changed beyond a particular deadband.
Quality	P_REFERENCEVALUE / IfcTimeSeries / IfcLogical	Quality Indicates the quality of measurement or failure condition, which may be further qualified by the Status. True: measured values are considered reliable; False: measured values are considered not reliable (i.e. a fault has been detected); Unknown: reliability of values is uncertain.
Status	P_REFERENCEVALUE / IfcTimeSeries / IfcLabel	Status Indicates an error code or identifier, whose meaning is specific to the particular automation system. Example values include: 'ConfigurationError', 'NotConnected', 'DeviceFailure', 'SensorFailure', 'LastKnown, 'CommunicationsFailure', 'OutOfService'.

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