Definition & axiom
⚠ Conflicts with the ISO 15926-4 primary definition
Label (EN)
filter cartridge
Label (PT-BR)
Definition (EN)
Definition (PT-BR)
Semi-formal axiom (Aristotelian)
Axiom type
LLM classification basis: structure-based → ⊑
Filter cartridge is defined by its physical form as a 'filter element' - a replaceable component with specific geometry and construction. While it participates in filtration, its identity is primarily structural: it is a discrete, insertable/removable filter medium, distinct from other filter configurations like filter screens, filter beds, or permanent filter assemblies.
Validation status
Why primitive (necessary only)
Reviewer notes
FOL theory & disjointness
First-order logic theory (generated)
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Disjoint with
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Expert review
Axiomatization steps
1
Identity-Giving Function
✓ done
FiltrationFunction → FiltrationProcess ⊑ MechanicalSeparation
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COPI-Core operation
MechanicalSeparation via process parent MechanicalSeparation
LLM rationale:
Filter cartridge shares the same identity-giving function as the broader Filter class already enriched in our ontology. The function is to collect/remove particles from a fluid stream through physical or chemical separation mechanisms.
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Expert review
2
Genus Proximus
✓ done
Filter · Assembly
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Genus (genus proximum)
Most specific superclass — may be a domain class like "Valve" or an IOF-Core root.
BFO/IOF-Core Root
bfo:Object branch
bfo:ObjectAggregate branch
bfo:ImmaterialEntity branch
LLM rationale:
Filter cartridge is clearly a subtype of Filter (already enriched in our ontology). The parent candidates include 'Filter' which is the most specific and appropriate genus. FILTER ELEMENT from ISO 15926 suggests it's a component, but filter cartridge is itself a complete filtration device that can be installed as a unit, making Filter the correct genus rather than treating it as a mere part.
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Expert review
3
Differentia Specifica
✓ done
∃hasComponentPartAtAllTimes.ReplaceableFilterMedium ⊓ ∃bearerOf.CartridgeGeometryProperty
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Conditions that distinguish
Filter Cartridge
from sibling classes under genus
Filter.
Only what is not already entailed by the genus.
Differentia expression
Differentia (natural language)
LLM rationale:
The key differentiating characteristics are: (1) replaceability - it's designed to be inserted and removed as a unit, and (2) cartridge geometry - a specific form factor that fits into filter housings. These distinguish it from permanent filters, filter presses, and other filter configurations.
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Expert review
4
Necessary Parts
✓ done
no necessary parts
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Consider part-whole relations beyond subsumption:
hasComponentPartAtAllTimes (universal, structurally essential)
· hasComponentPartAtSomeTime (contingent, optional component)
LLM rationale:
Every filter cartridge must have a filter medium (the functional element) and a housing structure that creates the cartridge form factor for replaceability.
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Expert review
5
Process Participation Signature ⟨I, O, T⟩
✓ done
PortionOfFluid → PortionOfFluid + PortionOfSolid
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Inputs (I)
Outputs (O)
Transformation (T)
LLM rationale:
Filter cartridge accepts contaminated fluid and produces cleaned fluid plus retained contaminants. The transformation is purely physical separation without changing fluid composition beyond contaminant removal.
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Expert review
More
Alternative labels
none
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Synonyms / alternative labels (comma-separated) — skos:altLabel
Language auto-detected on export (PT if the label contains accents, EN otherwise).
Properties as BFO qualities
no CFIHOS/DEXPI properties
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No CFIHOS/DEXPI properties found for this cluster.
Custom axioms
none
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Axioms not produced by the pipeline. Each is appended verbatim as an
rdfs:subClassOf restriction on Filter Cartridge.
Write the restriction block in Turtle syntax (without the leading
rdfs:subClassOf).
Example: [ owl:onProperty :hasPart ; owl:someValuesFrom :Wellhead ]
Cross-standard divergences
none detected yet
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Click "Detect divergences" to analyse cross-standard disagreements for this cluster.
