exported
equivalent
pressure transmitter
IRI:
http://www.inf.ufrgs.br/ontologies/copi#Pressuretransmitter
Generated on 2026-04-13
Natural Language Definition
EN
A pressure transmitter is a transmitter that converts pressure measurements into standardized output signals for transmission to control or monitoring systems.
PT-BR
Um transmissor de pressão é um transmissor que converte medições de pressão em sinais de saída padronizados para transmissão a sistemas de controle ou monitoramento.
Formal Axioms
Semi-formal (Aristotelian)
Every pressure transmitter is a transmitter that has the function to transmit pressure measurement signals.
First-Order Logic Theory
Loading…
▸ Stored override
∀x(PressureTransmitter(x) ↔ (Transmitter(x) ∧ ∃f(PressureTransmissionFunction(f) ∧ hasFunction(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: PressureTransmitter
<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_0000031 rdf:type owl:Class ; # PressureTransmissionFunction
rdfs:subClassOf :COPI_0000030 ; # SignalTransmissionFunction
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty bfo:BFO_0000054 ; # realizedIn
owl:allValuesFrom :COPI_0000613 # PressureSignalTransmissionProcess
] ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty bfo:BFO_0000054 ; # realizedIn
owl:someValuesFrom :COPI_0000613 # PressureSignalTransmissionProcess
] ;
rdfs:label "pressure transmission function"@en ;
rdfs:label "função de transmissão de pressão"@pt-br .
:COPI_0000030 rdf:type owl:Class . # SignalTransmissionFunction
### Process type
:COPI_0000613 rdf:type owl:Class ; # PressureSignalTransmissionProcess
rdfs:subClassOf :COPI_0000035 ; # SignalTransmissionProcess
rdfs:label "pressure signal transmission process"@en ;
rdfs:label "processo de transmissão de sinal de pressão"@pt-br .
:COPI_0000035 rdf:type owl:Class . # SignalTransmissionProcess
:COPI_0000613 # PressureSignalTransmissionProcess
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasInput ;
owl:someValuesFrom :COPI_0000048 # PressureMeasurementResult
] ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasSpecifiedOutput ;
owl:someValuesFrom iof-core:InformationContentEntity
] .
### Equipment universal: PressureTransmitter
:COPI_0000144 rdf:type owl:Class ; # PressureTransmitter
owl:equivalentClass [
rdf:type owl:Class ;
owl:intersectionOf (
:COPI_0000157 # Transmitter
[
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasFunction ; # Object branch (MaterialArtifact/Assembly/Object/FiatObjectPart)
owl:someValuesFrom :COPI_0000031 # PressureTransmissionFunction
]
)
] ;
rdfs:label "pressure transmitter"@en ;
rdfs:label "transmissor de pressão"@pt-br ;
iof-av:naturalLanguageDefinition "A pressure transmitter is a transmitter that converts pressure measurements into standardized output signals for transmission to control or monitoring systems."@en ;
skos:definition "A pressure transmitter is a transmitter that converts pressure measurements into standardized output signals for transmission to control or monitoring systems."@en ;
iof-av:naturalLanguageDefinition "Um transmissor de pressão é um transmissor que converte medições de pressão em sinais de saída padronizados para transmissão a sistemas de controle ou monitoramento."@pt-br ;
rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty bfo:BFO_0000196 ; owl:someValuesFrom :COPI_0000058 ] ;
skos:definition "[ISO 15926-4] A <PRESSURE TRANSMITTER> is a <PROCESS VARIABLE TRANSMITTER> and a <PRESSURE MEASURING INSTRUMENT>"@en ;
skos:definition "[CFIHOS] A transmitter that is producing a standardized output signal dependent of a received input signal from a pressure element."@en ;
skos:definition "[ISA 5.1] ISA 5.1 tag abbreviation 'PT'. First letter 'P': Pressure. Succeeding letters: 'T' = Transmit."@en .
# Disjointness: PressureTransmitter and FlowTransmitter
[] rdf:type owl:AllDisjointClasses ;
owl:members ( :COPI_0000144 :COPI_0000118 ) . # PressureTransmitter, FlowTransmitter
# Disjointness: PressureTransmitter and TemperatureTransmitter
[] rdf:type owl:AllDisjointClasses ;
owl:members ( :COPI_0000144 :COPI_0000155 ) . # PressureTransmitter, TemperatureTransmitter
# Disjointness: PressureTransmitter and LevelTransmitter
[] rdf:type owl:AllDisjointClasses ;
owl:members ( :COPI_0000144 :COPI_0000131 ) . # PressureTransmitter, LevelTransmitter
Axiomatization Decision Log
1
Identity-Giving Function
Function class
PressureTransmissionFunction
⊑ SignalTransmissionFunction
Realized in
PressureSignalTransmissionProcess
⊑ SignalTransmissionProcess
The identity-giving function is the specialized transmission of pressure measurement data as standardized output signals. This is a subtype of the already-defined SignalTransmissionFunction, specifically for pressure variables. The function realizes the conversion of pressure sensing to communication-ready signals.
✓
Expert review — Accepted
2
Genus Determination
Transmitter
From parent_candidates, 'transmitter' is the most specific appropriate superclass and is already enriched in our ontology with SignalTransmissionFunction. ISO 15926 confirms this inheritance path through PROCESS VARIABLE TRANSMITTER. 'PRESSURE MEASURING INSTRUMENT' is a lateral classification axis (measurement vs transmission), while 'transmitter' captures the core equipment category.
✓
Expert review — Accepted
3
Necessary Parts
No necessary parts recorded (concept may be primitive at this level).
These parts constitute the minimal functional architecture: sensing, conditioning, and process interface. Specific sensor technologies (capacitive, piezoresistive) vary by subtype.
✓
Expert review — Accepted
4
Process Participation Signature ⟨I, O, T⟩
Inputs (I)
PressureMeasurementResult
— from process variable
Outputs (O)
InformationContentEntity
— proportional to pressure input (4-20mA, digital, etc.)
Transformation (T)
pressure measurement signal converted to standardized transmission signal
Signature reflects the signal transduction from pressure sensing to communication-ready output, requiring electrical power for active signal conditioning and transmission.
✓
Expert review — Accepted
5
Axiom Mode Decision
Necessary + Sufficient
— modelled as a defined class
(≡, EquivalentClass). Automatic classification is
appropriate for this concept.
✓
Expert review — Accepted
Disjointness Axioms
FlowTransmitter
TemperatureTransmitter
LevelTransmitter
C2: FlowTransmitter, TemperatureTransmitter, LevelTransmitter. Different process variable specializations with incompatible input signal types - a transmitter cannot simultaneously transmit pressure and temperature signals as its primary function
Cross-Standard Observations
ISO 15926 provides the clearest taxonomic structure showing dual inheritance from both transmitter and pressure measurement categories. CFIHOS focuses on the signal conversion aspect. ISA 5.1 confirms the standard instrumentation classification. All sources align on the core function of standardized signal output from pressure input.
Source Definitions
3 sources
ISO 15926-4
PRESSURE TRANSMITTER ↗
Definition text withheld (copyrighted standard) — follow the source link above.
CFIHOS
pressure transmitter
Definition text withheld (copyrighted standard) — follow the source link above.
isa5_1
Pressure Transmitter ↗
Definition text withheld (copyrighted standard) — follow the source link above.
Metadata
| Ontology | COPI |
| Research group | INF-UFRGS-Ontologies |
| Funding | CNPq INF-UFRGS-ENERGIA |
| Project | OntoKG / Petrobras |
| ID | #50 |
| Cluster | pressure transmitter |
| Status | exported |
| Axiom mode | equivalent |
| Created | 2026-04-13 |
| Updated | 2026-09-08 |
ISA 5.1-2022 P&ID Symbol
5_2_1/001_transmitter_with_integral_primary_element_bubble_format.png
