exported
necessary
in-line filter
IRI:
http://www.inf.ufrgs.br/ontologies/copi#In-Linefilter
Generated on 2026-04-13
Natural Language Definition
EN
An in-line filter is a filter that is installed directly within a fluid line and supported by connected piping or equipment, designed to remove particles or contaminants from fluid streams during normal flow operations.
PT-BR
Um filtro em linha é um filtro que é instalado diretamente dentro de uma linha de fluido e suportado por tubulações ou equipamentos conectados, projetado para remover partículas ou contaminantes de correntes de fluido durante operações normais de fluxo.
Formal Axioms
Semi-formal (Aristotelian)
Every in-line filter is a filter that has an in-line installation method and is supported by connected equipment.
First-Order Logic Theory
Loading…
▸ Stored override
∀x (InLineFilter(x) → Filter(x) ∧ ∃m,e (InLineInstallation(m) ∧ ConnectedEquipment(e) ∧ hasInstallationMethod(x,m) ∧ supportedBy(x,e)))
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: InLineFilter
<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 "2026-10-07"^^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_0000194 rdf:type owl:Class ; # FiltrationFunction
rdfs:subClassOf iof-core:DesignedFunction ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty bfo:BFO_0000054 ; # realizedIn
owl:allValuesFrom :COPI_0000510 # FiltrationProcess
] ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty bfo:BFO_0000054 ; # realizedIn
owl:someValuesFrom :COPI_0000510 # FiltrationProcess
] ;
rdfs:label "filtration function"@en ;
rdfs:label "função de filtração"@pt-br .
### Process type
:COPI_0000510 rdf:type owl:Class ; # FiltrationProcess
rdfs:subClassOf :COPI_0000006 ; # MechanicalSeparation
rdfs:label "filtration process"@en ;
rdfs:label "processo de filtração"@pt-br .
:COPI_0000006 rdf:type owl:Class . # MechanicalSeparation
:COPI_0000510 # FiltrationProcess
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_0000400 # RemovedMaterial
] .
### Equipment universal: InLineFilter
:COPI_0000126 rdf:type owl:Class ; # InLineFilter
rdfs:subClassOf :COPI_0000081 ; # Filter
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasFunction ; # Object branch (MaterialArtifact/Assembly/Object/FiatObjectPart)
owl:someValuesFrom :COPI_0000194 # FiltrationFunction
] ;
rdfs:label "in line filter"@en ;
rdfs:label "filtro em linha"@pt-br ;
iof-av:naturalLanguageDefinition "An in-line filter is a filter that is installed directly within a fluid line and supported by connected piping or equipment, designed to remove particles or contaminants from fluid streams during normal flow operations."@en ;
skos:definition "An in-line filter is a filter that is installed directly within a fluid line and supported by connected piping or equipment, designed to remove particles or contaminants from fluid streams during normal flow operations."@en ;
iof-av:naturalLanguageDefinition "Um filtro em linha é um filtro que é instalado diretamente dentro de uma linha de fluido e suportado por tubulações ou equipamentos conectados, projetado para remover partículas ou contaminantes de correntes de fluido durante operações normais de fluxo."@pt-br ;
iof-av:semiFormalNaturalLanguageAxiom "Every in-line filter is a filter that has an in-line installation method and is supported by connected equipment."@en ;
iof-av:firstOrderLogicAxiom "∀x (InLineFilter(x) → Filter(x) ∧ ∃m,e (InLineInstallation(m) ∧ ConnectedEquipment(e) ∧ hasInstallationMethod(x,m) ∧ supportedBy(x,e)))"@en ;
iof-av:isPrimitive "true"^^xsd:boolean ;
iof-av:primitiveRationale "Using necessary conditions because this is a constructive type defined by physical installation configuration. Under OWA, any filter with in-line connections and piping support could be classified as in-line filter, but specialized hybrid equipment or custom installations might have these features without belonging to the standard in-line filter maintenance category. Starting with necessary conditions protects against false positives."@en ;
skos:definition "[ISO 15926-4] An <IN-LINE FILTER> is an <ARTEFACT> and a <FILTER> that is intended to be supported by connected equipment. Typically supported by piping"@en .
Axiomatization Decision Log
1
Identity-Giving Function
Function class
FiltrationFunction
⊑ DesignedFunction
Realized in
FiltrationProcess
⊑ MechanicalSeparation
The identity-giving function is filtration (separation of particles/contaminants from fluid streams). This function is already established for the general Filter class, and in-line filter inherits this same basic function.
2
Genus Determination
Filter
Filter is the most specific appropriate superclass from the parent candidates. An in-line filter IS a filter with additional installation constraints. Filter is already enriched in our ontology with function: FiltrationFunction, genus: Separator.
3
Necessary Parts
No necessary parts recorded (concept may be primitive at this level).
In-line filters inherit the basic filter element from the genus, but additionally require specific inlet/outlet connections that enable direct integration into piping systems without independent support structures.
4
Process Participation Signature ⟨I, O, T⟩
Inputs (I)
PortionOfFluid
— containing particles or contaminants
Outputs (O)
PortionOfFluid
— reduced particle/contaminant content
RemovedMaterial
— separated particles retained in filter element
Transformation (T)
physical separation of particles/contaminants from fluid stream
Standard filtration signature - one contaminated fluid input, two outputs (cleaned fluid and retained contaminants). Same as general Filter class since function is identical.
5
Axiom Mode Decision
Necessary conditions only
— modelled as a primitive universal
(⊑, SubClassOf). Identity is grounded in designed
function and cannot be reduced to a property checklist.
Using necessary conditions because this is a constructive type defined by physical installation configuration. Under OWA, any filter with in-line connections and piping support could be classified as in-line filter, but specialized hybrid equipment or custom installations might have these features without belonging to the standard in-line filter maintenance category. Starting with necessary conditions protects against false positives.
Cross-Standard Observations
Only one source (ISO 15926) provides a definition. The definition emphasizes the physical installation aspect (in-line, supported by connected equipment) rather than functional differentiation. This aligns with treating it as a constructive subtype of Filter.
