exported
necessary
flow measuring element
IRI:
http://www.inf.ufrgs.br/ontologies/copi#Flowmeasuringelement
Generated on 2026-05-04
Natural Language Definition
EN
A MeasuringElement that bears a FlowMeasurementFunction and that is designed to determine and quantify the rate of fluid flow through a system.
PT-BR
Um MeasuringElement que possui uma FlowMeasurementFunction e que é projetado para determinar e quantificar a taxa de fluxo de fluido através de um sistema.
Formal Axioms
Semi-formal (Aristotelian)
Every FlowMeasuringElement is a MeasuringElement that bears a FlowMeasurementFunction
First-Order Logic Theory
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▸ Stored override
∀x(FlowMeasuringElement(x) ↔ (MeasuringElement(x) ∧ ∃f(FlowMeasurementFunction(f) ∧ bearerOf(x,f))))
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: FlowMeasuringElement
<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_0000174 rdf:type owl:Class ; # FlowMeasurementFunction
rdfs:subClassOf iof-core:DesignedFunction ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty bfo:BFO_0000054 ; # realizedIn
owl:allValuesFrom :COPI_0000522 # FlowMeasurementProcess
] ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty bfo:BFO_0000054 ; # realizedIn
owl:someValuesFrom :COPI_0000522 # FlowMeasurementProcess
] ;
rdfs:label "flow measurement function"@en ;
rdfs:label "função de medição de fluxo"@pt-br ;
iof-av:naturalLanguageDefinition "A DesignedFunction that is realized in a FlowMeasurementProcess and that consists in determining and quantifying the rate of fluid flow through a system, providing measurement data for monitoring, control, or recording purposes."@en ;
skos:definition "A DesignedFunction that is realized in a FlowMeasurementProcess and that consists in determining and quantifying the rate of fluid flow through a system, providing measurement data for monitoring, control, or recording purposes."@en .
### Process type
:COPI_0000522 rdf:type owl:Class ; # FlowMeasurementProcess
rdfs:subClassOf iof-core:PlannedProcess ;
rdfs:label "flow measurement process"@en ;
rdfs:label "processo de medição de fluxo"@pt-br ;
iof-av:naturalLanguageDefinition "A PlannedProcess in which a measuring element determines the flow rate of a fluid by sensing flow-related physical phenomena and converting them into measurable signals or indications."@en ;
skos:definition "A PlannedProcess in which a measuring element determines the flow rate of a fluid by sensing flow-related physical phenomena and converting them into measurable signals or indications."@en .
:COPI_0000522 # FlowMeasurementProcess
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_0000049 # FlowMeasurementResult
] .
### Equipment universal: FlowMeasuringElement
:COPI_0000116 rdf:type owl:Class ; # FlowMeasuringElement
rdfs:subClassOf :COPI_0000116 ; # FlowElement
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasFunction ; # Object branch (MaterialArtifact/Assembly/Object/FiatObjectPart)
owl:someValuesFrom :COPI_0000174 # FlowMeasurementFunction
] ;
rdfs:label "flow measuring element"@en ;
rdfs:label "MeasuringElement que possui uma FlowMeasurementFunction e"@pt-br ;
iof-av:naturalLanguageDefinition "A MeasuringElement that bears a FlowMeasurementFunction and that is designed to determine and quantify the rate of fluid flow through a system."@en ;
skos:definition "A MeasuringElement that bears a FlowMeasurementFunction and that is designed to determine and quantify the rate of fluid flow through a system."@en ;
iof-av:naturalLanguageDefinition "Um MeasuringElement que possui uma FlowMeasurementFunction e que é projetado para determinar e quantificar a taxa de fluxo de fluido através de um sistema."@pt-br ;
iof-av:semiFormalNaturalLanguageAxiom "Every FlowMeasuringElement is a MeasuringElement that bears a FlowMeasurementFunction"@en ;
iof-av:firstOrderLogicAxiom "∀x(FlowMeasuringElement(x) ↔ (MeasuringElement(x) ∧ ∃f(FlowMeasurementFunction(f) ∧ bearerOf(x,f))))"@en ;
iof-av:isPrimitive "true"^^xsd:boolean ;
skos:definition "[ISO 15926-4] A <FLOW MEASURING ELEMENT> is a <MEASURING ELEMENT> that is used to measure <FLOW RATE>"@en .
Axiomatization Decision Log
1
Identity-Giving Function
Function class
FlowMeasurementFunction
⊑ DesignedFunction
Realized in
FlowMeasurementProcess
⊑ PlannedProcess
The function FlowMeasurementFunction already exists in the enriched classes list (used by flow element, flow meter, orifice plate, coriolis mass flow meter). Since 'flow measuring element' has the identical identity-giving function - measuring flow rate - I reuse the existing function name rather than creating a new one.
2
Genus Determination
FlowElement
The source definition explicitly states that 'A FLOW MEASURING ELEMENT is a MEASURING ELEMENT that is used to measure FLOW RATE'. The genus MEASURING ELEMENT is directly provided in the parent_candidates. While MeasuringElement is not yet enriched in our ontology, it is the most specific and ontologically correct superclass according to the ISO 15926 hierarchy.
3
Necessary Parts
No necessary parts recorded (concept may be primitive at this level).
No specific component parts are mentioned in the source definition or available in the Known Component Terms list. The definition is purely functional, stating only that it 'measures flow rate' without specifying any mandatory physical components. Different subtypes (differential pressure, electromagnetic, optical, etc.) have different structural implementations, so parts should be specified at the subtype level rather than at this universal level.
4
Process Participation Signature ⟨I, O, T⟩
Inputs (I)
PortionOfFluid
— flowing fluid stream whose flow rate is to be measured
Outputs (O)
FlowMeasurementResult
— measurement signal or indication representing flow rate
Transformation (T)
flow rate of a fluid stream is sensed and converted into a measurable signal or indication
The process signature captures the essence of flow measurement: a flowing fluid stream enters as input, and the measuring element outputs an information-bearing artifact (signal, indication, or reading) that represents the flow rate. The transformation is measurement_transduction as the element converts a physical quantity (flow rate) into a measurable signal.
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.
Cross-Standard Observations
Only one source (ISO 15926) provides a definition. The concept shows rich subtype diversity in the ISO hierarchy with multiple measurement principles (differential pressure, electromagnetic, thermal, optical, etc.), indicating it serves as a functional parent category for various flow measurement technologies.
