#### 7.1.4.17 Pset_FlowInstrumentPHistory

PSET_PERFORMANCEDRIVEN / IfcFlowInstrument

| Properties for history of flow instrument values. HISTORY: Added in IFC4.

buildingSMART Data Dictionary

PSD-XML

- 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'.

Link to this page