exported
equivalent
differential pressure measuring element
IRI:
http://www.inf.ufrgs.br/ontologies/copi#Differentialpressuremeasuringelement
Generated on 2026-05-04
Natural Language Definition
EN
A pressure element that bears a differential pressure measurement function and that consists in sensing the pressure difference between two fluid media or connection points to enable measurement of differential pressure through mechanical deflection proportional to the pressure difference.
PT-BR
Um elemento de pressão que porta uma função de medição de pressão diferencial e que consiste em detectar a diferença de pressão entre duas mídias fluidas ou pontos de conexão para permitir a medição de pressão diferencial através de deflexão mecânica proporcional à diferença de pressão.
Formal Axioms
Semi-formal (Aristotelian)
DifferentialPressureMeasuringElement equivalentTo PressureElement and bearerOf some DifferentialPressureMeasurementFunction
First-Order Logic Theory
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▸ Stored override
∀x(DifferentialPressureMeasuringElement(x) ↔ (PressureElement(x) ∧ ∃f(DifferentialPressureMeasurementFunction(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: DifferentialPressureMeasuringElement
<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_0000179 rdf:type owl:Class ; # DifferentialPressureMeasurementFunction
rdfs:subClassOf :COPI_0000177 ; # PressureSensingFunction
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty bfo:BFO_0000054 ; # realizedIn
owl:allValuesFrom :COPI_0000470 # DifferentialPressureMeasurementProcess
] ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty bfo:BFO_0000054 ; # realizedIn
owl:someValuesFrom :COPI_0000470 # DifferentialPressureMeasurementProcess
] ;
rdfs:label "differential pressure measurement function"@en ;
rdfs:label "função de medição de pressão diferencial"@pt-br ;
iof-av:naturalLanguageDefinition "A PressureSensingFunction that is realized in a DifferentialPressureMeasurementProcess and that consists in sensing the pressure difference between two fluid media or two points in the same medium to enable measurement of differential pressure."@en ;
skos:definition "A PressureSensingFunction that is realized in a DifferentialPressureMeasurementProcess and that consists in sensing the pressure difference between two fluid media or two points in the same medium to enable measurement of differential pressure."@en .
:COPI_0000177 rdf:type owl:Class . # PressureSensingFunction
### Process type
:COPI_0000470 rdf:type owl:Class ; # DifferentialPressureMeasurementProcess
rdfs:subClassOf iof-core:MeasurementProcess ;
rdfs:label "differential pressure measurement process"@en ;
rdfs:label "processo de medição de pressão diferencial"@pt-br ;
iof-av:naturalLanguageDefinition "A PlannedProcess in which a differential pressure measuring element senses the pressure difference between two fluid inputs, producing a mechanical deflection or signal proportional to the differential pressure for measurement purposes."@en ;
skos:definition "A PlannedProcess in which a differential pressure measuring element senses the pressure difference between two fluid inputs, producing a mechanical deflection or signal proportional to the differential pressure for measurement purposes."@en .
iof-core:MeasurementProcess rdf:type owl:Class .
:COPI_0000470 # DifferentialPressureMeasurementProcess
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasInput ;
owl:someValuesFrom :COPI_0000037 # PortionOfFluid
] .
### Equipment universal: DifferentialPressureMeasuringElement
:COPI_0000251 rdf:type owl:Class ; # DifferentialPressureMeasuringElement
owl:equivalentClass [
rdf:type owl:Class ;
owl:intersectionOf (
:COPI_0000142 # PressureElement
[
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasFunction ; # Object branch (MaterialArtifact/Assembly/Object/FiatObjectPart)
owl:someValuesFrom :COPI_0000179 # DifferentialPressureMeasurementFunction
]
)
] ;
rdfs:label "differential pressure measuring element"@en ;
rdfs:label "elemento medidor de pressão diferencial"@pt-br ;
iof-av:naturalLanguageDefinition "A pressure element that bears a differential pressure measurement function and that consists in sensing the pressure difference between two fluid media or connection points to enable measurement of differential pressure through mechanical deflection proportional to the pressure difference."@en ;
skos:definition "A pressure element that bears a differential pressure measurement function and that consists in sensing the pressure difference between two fluid media or connection points to enable measurement of differential pressure through mechanical deflection proportional to the pressure difference."@en ;
iof-av:naturalLanguageDefinition "Um elemento de pressão que porta uma função de medição de pressão diferencial e que consiste em detectar a diferença de pressão entre duas mídias fluidas ou pontos de conexão para permitir a medição de pressão diferencial através de deflexão mecânica proporcional à diferença de pressão."@pt-br ;
skos:definition "[ISO 15926-4] A <DIFFERENTIAL PRESSURE MEASURING ELEMENT> is a <PRESSURE MEASURING ELEMENT> for the measurement of <DIFFERENTIAL PRESSURE>"@en .
Axiomatization Decision Log
1
Identity-Giving Function
Function class
DifferentialPressureMeasurementFunction
⊑ PressureSensingFunction
Realized in
DifferentialPressureMeasurementProcess
⊑ MeasurementProcess
The identity-giving function is the measurement of differential pressure, which distinguishes this from absolute pressure measurement or gauge pressure measurement. This function is realized through various mechanical mechanisms but the functional identity remains constant.
2
Genus Determination
PressureElement
From the parent_candidates list, 'PRESSURE MEASURING ELEMENT' maps to 'pressure element' which is already enriched in our ontology. This is the most specific appropriate superclass, as differential pressure measuring elements are a specialized type of pressure sensing device. The genus is more specific than the generic 'Instrument' and captures the pressure-specific sensing capability.
3
Necessary Parts
| Part class | Parent | Relation |
|---|---|---|
| None | MaterialArtifact | hasComponentPartAtAllTimes |
While the subtypes indicate various sensing mechanisms (bellows, bourdon tube, diaphragm, piston, liquid column), these are subtype-specific implementations rather than universal parts. The generic differential pressure measuring element concept does not mandate a specific sensing mechanism, only the functional capability.
4
Process Participation Signature ⟨I, O, T⟩
Inputs (I)
PortionOfFluid
— high pressure and low pressure inputs at separate connection points
Outputs (O)
—
Transformation (T)
mechanical deflection or displacement generated proportional to the pressure difference between two fluid inputs
The signature captures the fundamental operation: two fluid pressure inputs create mechanical displacement output proportional to their difference. This distinguishes differential pressure elements from single-input pressure sensors and grounds the measurement transduction transformation.
5
Axiom Mode Decision
Necessary + Sufficient
— modelled as a defined class
(≡, EquivalentClass). Automatic classification is
appropriate for this concept.
Cross-Standard Observations
Only one source (ISO 15926-4) provides the definition. The concept is well-defined with clear functional identity and multiple constructive subtypes listed, showing good ontological structure in the source standard.
