exported
necessary
measuring element
IRI:
http://www.inf.ufrgs.br/ontologies/copi#Measuringelement
Generated on 2026-08-08
Natural Language Definition
EN
A material artifact that bears a property measurement function, used for the measurement of a property and defined independently from the measuring instrument that handles that measurement result.
PT-BR
Um artefato material que possui uma função de medição de propriedade, usado para a medição de uma propriedade e definido independentemente do instrumento de medição que trata esse resultado.
Formal Axioms
First-Order Logic Theory
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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: MeasuringElement
<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_0000712 rdf:type owl:Class ; # PropertyMeasurementFunction
rdfs:subClassOf :COPI_0000029 ; # InstrumentationFunction
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty bfo:BFO_0000054 ; # realizedIn
owl:allValuesFrom :COPI_0000713 # PropertyMeasurementProcess
] ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty bfo:BFO_0000054 ; # realizedIn
owl:someValuesFrom :COPI_0000713 # PropertyMeasurementProcess
] ;
rdfs:label "property measurement function"@en .
:COPI_0000029 rdf:type owl:Class . # InstrumentationFunction
### Process type
:COPI_0000713 rdf:type owl:Class ; # PropertyMeasurementProcess
rdfs:subClassOf iof-core:MeasurementProcess ;
rdfs:label "property measurement process"@en .
iof-core:MeasurementProcess rdf:type owl:Class .
:COPI_0000713 # PropertyMeasurementProcess
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 iof-core:MeasurementInformationContentEntity
] .
### Equipment universal: MeasuringElement
:COPI_0000573 rdf:type owl:Class ; # MeasuringElement
rdfs:subClassOf :COPI_0000091 ; # Instrument
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasFunction ; # Object branch (MaterialArtifact/Assembly/Object/FiatObjectPart)
owl:someValuesFrom :COPI_0000712 # PropertyMeasurementFunction
] ;
rdfs:label "measuring element"@en ;
rdfs:label "elemento de medição"@pt-br ;
iof-av:naturalLanguageDefinition "A material artifact that bears a property measurement function, used for the measurement of a property and defined independently from the measuring instrument that handles that measurement result."@en ;
skos:definition "A material artifact that bears a property measurement function, used for the measurement of a property and defined independently from the measuring instrument that handles that measurement result."@en ;
iof-av:naturalLanguageDefinition "Um artefato material que possui uma função de medição de propriedade, usado para a medição de uma propriedade e definido independentemente do instrumento de medição que trata esse resultado."@pt-br ;
iof-av:isPrimitive "true"^^xsd:boolean ;
iof-av:primitiveRationale "Same-genus same-function (CLAUDE.md): the element's identity-giving function is the sensing captured by InstrumentationFunction, which its genus Instrument already bears, so equivalence would collapse the two. What distinguishes the element is stated by ISO 15926 relationally — it is \"defined independently from a MEASURING INSTRUMENT that is handling that measurement result\" — and a relational condition is not sufficient under OWA."@en ;
skos:definition "[ISO 15926-4] A <MEASURING ELEMENT> is a <PROCESS SIGNAL GENERATING FUNCTION> used for the measurement of a <Property>. It is defined independently from a <MEASURING INSTRUMENT> that is handling that measurement result and that may or may not house that <MEASURING ELEMENT>; If so, there is an assembly relationship, if not, there is a connection relationship"@en .
Axiomatization Decision Log
1
Identity-Giving Function
Function class
PropertyMeasurementFunction
⊑ InstrumentationFunction
Realized in
PropertyMeasurementProcess
⊑ MeasurementProcess
ISO 15926 and DEXPI agree on a purely functional definition — 'used for the measurement of a Property' / 'An artefact used for the measurement of a Property'. ISO adds the decisive qualification: it is defined independently from the measuring instrument that handles the result and may or may not house it. So the identity-giving function is sensing the property itself, not reporting it.
2
Genus Determination
Instrument
Instrument (COPI_0000091), not MaterialArtifact. COPI already treats primary elements as instruments — temperature element, pressure element, flow element and level element all carry genus Instrument — and a measuring element belongs with them. DEXPI types it as an artefact; ISO 15926 files it under PROCESS SIGNAL GENERATING FUNCTION, a function class that cannot serve as a genus for an artifact.
3
Necessary Parts
No necessary parts recorded (concept may be primitive at this level).
Parts named in the differentia are not asserted as necessary_parts: validate_necessary_parts_quotes() requires each part to carry a verbatim source_quote, and these come from the definition of this entry itself rather than from a standard stating a component relationship. Left empty pending expert review.
4
Process Participation Signature ⟨I, O, T⟩
Inputs (I)
PortionOfFluid
— the entity whose property is being sensed
Outputs (O)
MeasurementInformationContentEntity
— the sensed value of the property
Transformation (T)
transduction of a property of some entity into a measurement result
Output is information content, not a material entity (ODR-010 §3). The element senses; the instrument handles the result.
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.
Same-genus same-function (CLAUDE.md): the element's identity-giving function is the sensing captured by InstrumentationFunction, which its genus Instrument already bears, so equivalence would collapse the two. What distinguishes the element is stated by ISO 15926 relationally — it is "defined independently from a MEASURING INSTRUMENT that is handling that measurement result" — and a relational condition is not sufficient under OWA.
Reviewer Notes
ODR-022 §13 coverage audit: standard term bearing a DesignedFunction that held a numeric IRI without an axiomatization. Genus of 'gas detecting measuring element'. Until now a non-enriched genus was carrying an enriched entry. Awaiting expert review.
