IfcFilterType

Definition from IAI: The element type IfcFilterType defines a list of commonly shared property set definitions of a filter and an optional set of product representations. It is used to define a filter specification (i.e. the specific product information, that is common to all occurrences of that product type).

> NOTE: The product representations are defined as representation maps (at the level of the supertype IfcTypeProduct, which get assigned by an element occurrence instance through the IfcShapeRepresentation.Item[1] being an IfcMappedItem.

A filter type is used to define the common properties of a filter that may be applied to many occurrences of that type. A filter is an apparatus used to remove particulate or gaseous matter from fluids and gases. Filter types (or the instantiable subtypes) may be exchanged without being already assigned to occurrences.

The occurrences of the IfcFilterType are represented by instances of IfcTreatmentDevice or its subtypes.

Property Set Use Definition:

The property sets relating to this entity are defined by the IfcPropertySet and attached by the IfcRelDefinesByProperties relationship. It is accessible by the inverse IsDefinedBy relationship. The following property set definitions specific to this entity are part of this IFC release:

- Pset_FilterTypeCommon: common property set for all filter types

- Pset_FilterTypeAirParticleFilter: property set for all air particle filter types

> NOTE: This entity has been renamed from IfcAirFilter in IFC R2x.

> HISTORY: New entity in IFC Release 2x2.

EXPRESS specification:

ENTITY IfcFilterType
SUBTYPE OF ( | IfcFlowTreatmentDeviceType);
PredefinedType | : | IfcFilterTypeEnum;
WHERE
WR1 | : | (PredefinedType <> IfcFilterTypeEnum.USERDEFINED) OR ((PredefinedType = IfcFilterTypeEnum.USERDEFINED) AND EXISTS(SELF\IfcElementType.ElementType));
END_ENTITY;

Attribute definitions:

PredefinedType | : | The type of air filter.

Inheritance graph

ENTITY IfcFilterType;
ENTITY IfcRoot;
GlobalId | : | IfcGloballyUniqueId;
OwnerHistory | : | IfcOwnerHistory;
Name | : | OPTIONAL IfcLabel;
Description | : | OPTIONAL IfcText;
ENTITY IfcObjectDefinition;
INVERSE
HasAssignments | : | SET OF IfcRelAssigns FOR RelatedObjects;
IsDecomposedBy | : | SET OF IfcRelDecomposes FOR RelatingObject;
Decomposes | : | SET [0:1] OF IfcRelDecomposes FOR RelatedObjects;
HasAssociations | : | SET OF IfcRelAssociates FOR RelatedObjects;
ENTITY IfcTypeObject;
ApplicableOccurrence | : | OPTIONAL IfcLabel;
HasPropertySets | : | OPTIONAL SET [1:?] OF IfcPropertySetDefinition;
INVERSE
ObjectTypeOf | : | SET [0:1] OF IfcRelDefinesByType FOR RelatingType;
ENTITY IfcTypeProduct;
RepresentationMaps | : | OPTIONAL LIST [1:?] OF UNIQUE IfcRepresentationMap;
Tag | : | OPTIONAL IfcLabel;
ENTITY IfcElementType;
ElementType | : | OPTIONAL IfcLabel;
ENTITY IfcDistributionElementType;
ENTITY IfcDistributionFlowElementType;
ENTITY IfcFlowTreatmentDeviceType;
ENTITY IfcFilterType;
PredefinedType | : | IfcFilterTypeEnum;
END_ENTITY;