exported
equivalent
strainer
IRI:
http://www.inf.ufrgs.br/ontologies/copi#Strainer
Generated on 2026-04-13
Natural Language Definition
EN
A strainer is a material artifact that bears a separation function and has a filtering element, designed to separate solid particles from fluids by passing the fluid through screens or perforations.
PT-BR
Um filtro grosso é um artefato material que possui uma função de separação e tem um elemento filtrante, projetado para separar partículas sólidas de fluidos fazendo o fluido passar através de telas ou perfurações.
Formal Axioms
Semi-formal (Aristotelian)
Every strainer is a material artifact that bears a separation function and has a filtering element as component part at all times and participates in solid-liquid separation processes.
First-Order Logic Theory
Loading…
▸ Stored override
∀x(Strainer(x) ↔ (MaterialArtifact(x) ∧ ∃f(SeparationFunction(f) ∧ bearerOf(x,f)) ∧ ∃e(FilteringElement(e) ∧ hasComponentPartAtAllTimes(x,e)) ∧ ∃p(SolidLiquidSeparationProcess(p) ∧ participatesIn(x,p))))
OWL 2 / Turtle
@prefix copi: <https://www.inf.ufrgs.br/ontologies/copi/> .
@prefix : <https://www.inf.ufrgs.br/ontologies/copi/> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
@prefix bfo: <http://purl.obolibrary.org/obo/> .
@prefix iof-core: <https://spec.industrialontologies.org/ontology/construct/> .
@prefix iof-av: <https://spec.industrialontologies.org/ontology/annotation/> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix qudt: <http://qudt.org/schema/qudt/> .
@prefix dcterms: <http://purl.org/dc/terms/> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix apv: <http://inf.ufrgs.br/ontologies/apv#> .
### COPI — Core Ontology for Petroleum Installations
### Class module: Strainer
<https://www.inf.ufrgs.br/ontologies/copi>
rdf:type owl:Ontology ;
dcterms:title "Core Ontology for Petroleum Installations (COPI)"@en ;
dcterms:title "Ontologia Core para Instalações de Petróleo (COPI)"@pt-br ;
dcterms:description "BFO/IOF-Core conformant ontology of equipment classes for petroleum production plants, developed using the five-step RDL enrichment method."@en ;
skos:scopeNote "Material artifacts (bfo:material_entity) that (i) are part of a petroleum production plant, and (ii) bear at least one function whose realization involves the transport (e.g. production and injection), processing (separation and other processes), control, monitoring, measurement, containment or offloading of material or energy."@en ;
skos:scopeNote "Artefatos materiais (bfo:material_entity) que (i) fazem parte de uma planta de produção de petróleo, e (ii) possuem ao menos uma função cuja realização envolve o transporte (p. ex. produção e injeção), processamento (separação e outros processos), controle, monitoramento, medição, contenção ou escoamento de material ou energia."@pt-br ;
skos:scopeNote "COPI provides high-level equipment categories defined by function to demonstrate the defined-class mechanism. Equipment subtypes are annotated with references to CFIHOS and PCA RDL terms. COPI is not a reference data library; organizations should use CFIHOS, PCA RDL, or ISO 14224 for comprehensive equipment classification."@en ;
skos:scopeNote "COPI fornece categorias de alto nível de equipamentos definidas por função para demonstrar o mecanismo de classe definida. Os subtipos de equipamentos são anotados com referências aos termos do CFIHOS e do PCA RDL. COPI não é uma biblioteca de dados de referência; organizações devem utilizar o CFIHOS, o PCA RDL ou a ISO 14224 para classificação abrangente de equipamentos."@pt-br ;
owl:versionInfo "1.1.0" ;
owl:imports <https://spec.industrialontologies.org/ontology/core/Core/> ;
owl:imports <http://purl.obolibrary.org/obo/bfo/2020/bfo.owl> ;
dcterms:creator "Nicolau Oyhenard dos Santos"@en ;
dcterms:contributor "Cauã Antunes" ;
dcterms:contributor "Haroldo Rojas" ;
dcterms:contributor "Rafael Petry" ;
dcterms:contributor "Régis Romeu" ;
dcterms:contributor "Mara Abel" ;
dcterms:isPartOf <https://inf.ufrgs.br/projetos/OntoKG> ;
dcterms:publisher "Universidade Federal do Rio Grande do Sul (UFRGS)"@en ;
dcterms:license <https://creativecommons.org/licenses/by/4.0/> ;
dcterms:created "2026-04-08"^^xsd:date ;
dcterms:modified "2026-10-08"^^xsd:date ;
apv:GlobalMinLanguageCoverage "en pt-br" ;
apv:ClassURIFormationRule "https://www[.]inf[.]ufrgs[.]br/ontologies/copi/(COPI_[0-9]{7}|[A-Z][A-Za-z0-9]*)" ;
apv:ClassMinAnnotationCoverage "rdfs:label https://spec.industrialontologies.org/ontology/annotation/naturalLanguageDefinition" .
iof-av:naturalLanguageDefinition rdf:type owl:AnnotationProperty ;
apv:MinAnnotationLength 20 .
### Identity-giving function
:COPI_0000195 rdf:type owl:Class ; # SeparationFunction
rdfs:subClassOf iof-core:DesignedFunction ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty bfo:BFO_0000054 ; # realizedIn
owl:allValuesFrom :COPI_0000635 # SeparationProcess
] ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty bfo:BFO_0000054 ; # realizedIn
owl:someValuesFrom :COPI_0000635 # SeparationProcess
] ;
rdfs:label "separation function"@en ;
rdfs:label "função de separação"@pt-br .
### Process type
:COPI_0000635 rdf:type owl:Class ; # SeparationProcess
rdfs:subClassOf :COPI_0000006 ; # MechanicalSeparation
rdfs:label "separation process"@en ;
rdfs:label "processo de separação"@pt-br .
:COPI_0000006 rdf:type owl:Class . # MechanicalSeparation
:COPI_0000635 # SeparationProcess
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasInput ;
owl:someValuesFrom :COPI_0000037 # PortionOfFluid
] ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasSpecifiedOutput ;
owl:someValuesFrom :COPI_0000037 # PortionOfFluid
] ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasSpecifiedOutput ;
owl:someValuesFrom :COPI_0000040 # PortionOfSolid
] .
### Equipment universal: Strainer
:COPI_0000152 rdf:type owl:Class ; # Strainer
owl:equivalentClass [
rdf:type owl:Class ;
owl:intersectionOf (
iof-core:MaterialArtifact
[
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasFunction ; # Object branch (MaterialArtifact/Assembly/Object/FiatObjectPart)
owl:someValuesFrom :COPI_0000195 # SeparationFunction
]
)
] ;
rdfs:label "strainer"@en ;
rdfs:label "filtro grosso"@pt-br ;
iof-av:naturalLanguageDefinition "A strainer is a material artifact that bears a separation function and has a filtering element, designed to separate solid particles from fluids by passing the fluid through screens or perforations."@en ;
skos:definition "A strainer is a material artifact that bears a separation function and has a filtering element, designed to separate solid particles from fluids by passing the fluid through screens or perforations."@en ;
iof-av:naturalLanguageDefinition "Um filtro grosso é um artefato material que possui uma função de separação e tem um elemento filtrante, projetado para separar partículas sólidas de fluidos fazendo o fluido passar através de telas ou perfurações."@pt-br ;
iof-av:semiFormalNaturalLanguageAxiom "Every strainer is a material artifact that bears a separation function and has a filtering element as component part at all times and participates in solid-liquid separation processes."@en ;
iof-av:firstOrderLogicAxiom "∀x(Strainer(x) ↔ (MaterialArtifact(x) ∧ ∃f(SeparationFunction(f) ∧ bearerOf(x,f)) ∧ ∃e(FilteringElement(e) ∧ hasComponentPartAtAllTimes(x,e)) ∧ ∃p(SolidLiquidSeparationProcess(p) ∧ participatesIn(x,p))))"@en ;
skos:definition "[ISO 15926-4] A <STRAINER> is a <FunctionalObject> that is capable of <STRAINING>"@en ;
skos:definition "[CFIHOS] A filter that is separating solid particles from a fluid by passing the fluid through a wire mesh, screen or metal plates containing perforations or slits."@en ;
skos:definition "[SLB Glossary] A device used to catch and hold the debris flowing in pipelines."@en ;
skos:definition "[POSC Caesar] A mechanical separator that is separating solid particles from a fluid by passing the fluid through a wire mesh, screen or metal plates containing perforations or slits."@en .
# Disjointness: Strainer and HeatExchanger
[] rdf:type owl:AllDisjointClasses ;
owl:members ( :COPI_0000152 :COPI_0000092 ) . # Strainer, HeatExchanger
# Disjointness: Strainer and Pump
[] rdf:type owl:AllDisjointClasses ;
owl:members ( :COPI_0000152 :COPI_0000072 ) . # Strainer, Pump
# Disjointness: Strainer and Compressor
[] rdf:type owl:AllDisjointClasses ;
owl:members ( :COPI_0000152 :COPI_0000073 ) . # Strainer, Compressor
Axiomatization Decision Log
1
Identity-Giving Function
Function class
SeparationFunction
⊑ DesignedFunction
Realized in
SeparationProcess
⊑ MechanicalSeparation
The identity-giving function is separating solid particles from fluids through physical filtration. This aligns with the already-enriched SeparationFunction in our ontology, used by separators and centrifuges. All definitions converge on this separation capability as the defining characteristic.
2
Genus Determination
MaterialArtifact
bfo:Object (BFO_0000030)
Monolithic causally unified material artefact.
MaterialArtifact ≡ Object ⊓ ∃bearerOf.DesignedFunction.
No domain-specific superclass exists in the parent candidates that is appropriate. 'FunctionalObject' and 'Artefact' are too abstract, 'PipeFitting' is too narrow (strainers can be standalone units), and 'other mechanical equipment' is not a proper ontological class. Strainers are typically monolithic or simple assemblies that function as single causally unified objects, making MaterialArtifact the appropriate BFO root.
3
Necessary Parts
No necessary parts recorded (concept may be primitive at this level).
These are the minimal universal parts required for any strainer to function - a filtering mechanism and a body to contain it. Specific configurations (basket shape, Y-shape, etc.) are subtype-specific.
4
Process Participation Signature ⟨I, O, T⟩
Inputs (I)
PortionOfFluid
— containing solid particles
Outputs (O)
PortionOfFluid
— with reduced solid particle content
PortionOfSolid
— captured particles and debris
Transformation (T)
mechanical separation of solid particles from fluid stream
Strainers take a contaminated fluid input and produce a cleaner fluid output plus captured solid waste. The transformation is purely mechanical separation without phase change or chemical alteration.
5
Axiom Mode Decision
Necessary + Sufficient
— modelled as a defined class
(≡, EquivalentClass). Automatic classification is
appropriate for this concept.
Disjointness Axioms
HeatExchanger
Pump
Compressor
C4: HeatExchanger, Pump, Compressor. Strainers perform mechanical separation while heat exchangers perform thermal energy transfer, pumps add mechanical energy to fluids, and compressors increase gas pressure. These represent incompatible process signatures.
Cross-Standard Observations
All sources agree on the core separation function. CFIHOS and POSC Caesar provide more technical detail about the filtering mechanism (wire mesh, screens, perforations). SLB focuses on debris capture in pipelines. ISO 15926 gives the most abstract definition but aligns with the functional approach.
