ISA 5.1 symbol
exported equivalent COPI_0000309
Level Switch
IRI: https://www.inf.ufrgs.br/ontologies/copi/COPI_0000309
Generated onGerado em 2026-04-16
Natural Language DefinitionDefinição em Linguagem Natural
EN
A level switch is an instrument that bears a LevelSwitchingFunction, combining level detection with switching capability to provide discrete on/off electrical signals when fluid or particulate material levels reach preset values.
PT-BR
Um interruptor de nível é um instrumento que possui uma Função de Comutação de Nível, combinando detecção de nível com capacidade de comutação para fornecer sinais elétricos discretos ligado/desligado quando níveis de fluidos ou materiais particulados atingem valores predefinidos.
Formal AxiomsAxiomas Formais
Semi-formal (Aristotelian)Semi-formal (Aristotélico)
Every level switch is an instrument that has the function of level switching and outputs discrete electrical signals based on preset level conditions.
First-Order Logic TheoryTeoria em Lógica de Primeira Ordem
[Definition]∀x (LevelSwitch(x) ↔ Instrument(x) ∧ ∃f (LevelSwitchingFunction(f) ∧ bearerOf(x,f)) ∧ ∃bearerOf.LevelSwitchingFunction ⊓ ∃participatesIn.LevelSwitchingProcess) — Steps 1–3: genus + identity-giving function [Function axiom: LevelSwitchingFunction]∀f (LevelSwitchingFunction(f) → ∀p (realizedIn(f,p) → LevelSwitchingProcess(p)) ∧ ∃p (LevelSwitchingProcess(p) ∧ realizedIn(f,p))) — Step 1: ∀ preserves type-type identity; ∃ rules out vacuous functions never realised [Process participation signature]∀x ∀f ((LevelSwitch(x) ∧ LevelSwitchingFunction(f) ∧ bearerOf(x,f)) → ∃m (FluidPortion(m) ∧ participatesIn(m,f)) ∧ ∃e (DiscreteElectricalSignal(e) ∧ participatesIn(e,f)) ∧ processType(f,MeasurementTransduction)) — Step 5: typed participants in the realising process
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: LevelSwitch <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 "1.1.0-104-g4d16eff" ; 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 "2026-07-13"^^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 :LevelSwitchingFunction rdf:type owl:Class ; rdfs:subClassOf iof-core:DesignedFunction ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty bfo:BFO_0000054 ; # realizedIn owl:allValuesFrom :LevelSwitchingProcess ] ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty bfo:BFO_0000054 ; # realizedIn owl:someValuesFrom :LevelSwitchingProcess ] ; rdfs:label "level switching function"@en ; rdfs:label "função de chaveamento de nível"@pt-br . ### Process type :LevelSwitchingProcess rdf:type owl:Class ; rdfs:subClassOf iof-core:PlannedProcess ; rdfs:label "level switching process"@en ; rdfs:label "processo de chaveamento de nível"@pt-br . :LevelSwitchingProcess rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty iof-core:hasInput ; owl:someValuesFrom :FluidPortion ] ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty iof-core:hasSpecifiedOutput ; owl:someValuesFrom :DiscreteElectricalSignal ] . ### Equipment universal: LevelSwitch :LevelSwitch rdf:type owl:Class ; owl:equivalentClass [ rdf:type owl:Class ; owl:intersectionOf ( :Instrument [ rdf:type owl:Restriction ; owl:onProperty iof-core:hasFunction ; # Object branch (MaterialArtifact/Assembly/Object/FiatObjectPart) owl:someValuesFrom :LevelSwitchingFunction ] ) ] ; rdfs:label "level switch"@en ; rdfs:label "interruptor de nível"@pt-br ; iof-av:naturalLanguageDefinition "A level switch is an instrument that bears a LevelSwitchingFunction, combining level detection with switching capability to provide discrete on/off electrical signals when fluid or particulate material levels reach preset values."@en ; skos:definition "A level switch is an instrument that bears a LevelSwitchingFunction, combining level detection with switching capability to provide discrete on/off electrical signals when fluid or particulate material levels reach preset values."@en ; iof-av:naturalLanguageDefinition "Um interruptor de nível é um instrumento que possui uma Função de Comutação de Nível, combinando detecção de nível com capacidade de comutação para fornecer sinais elétricos discretos ligado/desligado quando níveis de fluidos ou materiais particulados atingem valores predefinidos."@pt-br ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty bfo:BFO_0000196 ; owl:someValuesFrom :COPI_0000058 ] ;
Axiomatization Decision LogRegistro de Decisões
1 Identity-Giving FunctionFunção Identitária
Function class
LevelSwitchingFunction ⊑ DesignedFunction
Realized in
LevelSwitchingProcess ⊑ PlannedProcess
The identity-giving function is to provide discrete on/off switching signals when fluid or particulate material levels reach preset values. This combines level sensing with switching actuation.
2 Genus DeterminationDeterminação do Gênero
Instrumentbfo:Object (BFO_0000030)
From parent_candidates, INSTRUMENTATION ITEM and LEVEL MEASURING INSTRUMENT point to instrumentation hierarchy. 'Instrument' is the most specific appropriate superclass for measurement and control devices. Control switch is too narrow as it excludes the measurement aspect. Not enriched yet in our ontology.
3 Differentia SpecificaDiferença Específica
∃bearerOf.LevelSwitchingFunction ⊓ ∃participatesIn.LevelSwitchingProcess

Combines level detection capability with switching function to output discrete on/off signals at preset level values.

The differentia requires both level detection and switching capabilities with discrete output signals, distinguishing it from continuous measurement instruments and from switches that detect other process variables.
4 Necessary PartsPartes Necessárias

No necessary parts recorded.

All level switches require sensing, switching, and output components regardless of the specific detection principle used.
Process Participation SignatureAssinatura de Participação em Processo
InputsEntradas
{'type': 'FluidPortion', 'count': 1, 'constraints': 'variable level'}
OutputsSaídas
{'type': 'DiscreteElectricalSignal', 'count': 1, 'constraints': 'on/off state indication'}
TransformationTransformação
level state transduction to electrical switching signal
Transforms physical level information into discrete electrical switching signals for control system use.
MetadataMetadados
COPI IDCOPI IDCOPI_0000309
IRIIRIhttps://www.inf.ufrgs.br/ontologies/copi/COPI_0000309
StatusStatusexported
Axiom modeModoequivalent
CreatedCriado2026-04-16
UpdatedAtualizado2026-07-12
LLM modelModelo LLMclaude-sonnet-4-20250514
VersionVersão2026-07-13