Defined in File Ifc4.h
IfcFlowMeter: public Ifc4::IfcFlowController¶
A flow meter is a device that is used to measure the flow rate in a system.
HISTORY New entity in IFC2x4
Type Use Definition IfcFlowMeter defines the occurrence of any flow meter; common information about flow meter types is handled by IfcFlowMeterType. The IfcFlowMeterType (if present) may establish the common type name, usage (predefined type), properties, materials, ports, composition, assignments, and representations. The IfcFlowMeterType is attached using the IfcRelDefinesByType objectified relationship and is accessible by the IsTypedBy inverse attribute. If the IfcFlowMeterType has ports or aggregated elements, such objects are reflected at the IfcFlowMeter occurrence using the IfcRelDefinesByObject relationship.
Property Use Definition The property sets relating to this entity are defined by IfcPropertySet and attached by the IfcRelDefinesByProperties relationship. They are accessible by the IsDefinedBy inverse attribute. Property sets may also be specified at the IfcFlowMeterType, defining the common property data for all occurrences of the same type. They are then accessible by the IsTypedBy inverse attribute pointing to IfcFlowMeterType.HasPropertySets. If both are given, then the properties directly defined at IfcFlowMeter override the properties defined at IfcFlowMeterType. Refer to the documentation at the supertype IfcFlowController and ancestors for inherited property set definitions. The following property set definitions are applicable to this entity: (All Types)
Pset_FlowMeterOccurrence (PSET_OCCURRENCEDRIVEN) Pset_FlowMeterTypeCommon (PSET_TYPEDRIVENOVERRIDE)
Quantity Use Definition The quantities relating to this entity are defined by IfcElementQuantity and attached by the IfcRelDefinesByProperties relationship. They are accessible by the IsDefinedBy inverse attribute. The following base quantities are defined and shall be exchanged with the IfcElementQuantity.Name = ‘BaseQuantities’. Other quantities, being subjected to local standard of measurement, may be defined with another string value assigned to Name. In this case a valid value for MethodOfMeasurement shall be provided.
Material Use Definition The material of the IfcFlowMeter is defined by IfcMaterialConstituentSet or as a fallback by IfcMaterial, and attached by the RelatingMaterial attribute on the IfcRelAssociatesMaterial relationship. It is accessible by the HasAssociations inverse attribute. Material information can also be given at the IfcFlowMeterType, defining the common attribute data for all occurrences of the same type. The following keywords for IfcMaterialConstituentSet.MaterialConstituents[n].Name shall be used:
Body: The primary material from which the object is constructed.
Port Use Definition The distribution ports relating to the IfcFlowMeter are defined by IfcDistributionPort and attached by the IfcRelConnectsPortToElement relationship. If the flow meter occurrence is defined by IfcFlowMeterType, then the port occurrences must reflect those defined at the IfcFlowMeterType using the IfcRelDefinesByObject relationship. Ports are specific to the IfcFlowMeter PredefinedType as follows indicated by the IfcDistributionPort Name, PredefinedType, and FlowDirection:
Inlet (ELECTRICAL, SINK): Inlet from utility. Outlet (ELECTRICAL, SOURCE): Measured use.
Inlet (GAS, SINK): Inlet from utility. Outlet (GAS, SOURCE): Measured use.
Inlet (OIL, SINK): Inlet from utility. Outlet (OIL, SOURCE): Measured use.
Inlet (DOMESTICCOLDWATER, SINK): Inlet from utility. Outlet (DOMESTICCOLDWATER, SOURCE): Measured use.
Figure 226 illustrates flow meter port use. Figure 226 — Flow meter port use
Whether the optional attribute PredefinedType is defined for this IfcFlowMeter.
IfcFlowMeter(std::string v1_GlobalId, ::Ifc4::IfcOwnerHistory *v2_OwnerHistory, boost::optional<std::string> v3_Name, boost::optional<std::string> v4_Description, boost::optional<std::string> v5_ObjectType, ::Ifc4::IfcObjectPlacement *v6_ObjectPlacement, ::Ifc4::IfcProductRepresentation *v7_Representation, boost::optional<std::string> v8_Tag, boost::optional<::Ifc4::IfcFlowMeterTypeEnum::Value> v9_PredefinedType)¶