exported
equivalent
flow transmitter
IRI:
http://www.inf.ufrgs.br/ontologies/copi#Flowtransmitter
Generated on 2026-04-13
Natural Language Definition
EN
A flow transmitter is a transmitter that produces standardized output signals proportional to flow measurements from flow sensing elements.
PT-BR
Um transmissor de fluxo é um transmissor que produz sinais de saída padronizados proporcionais às medições de fluxo provenientes de elementos sensores de fluxo.
Formal Axioms
Semi-formal (Aristotelian)
Every flow transmitter is a transmitter that has the function of transmitting flow signals and has as input flow measurements.
First-Order Logic Theory
Loading…
▸ Stored override
∀x (FlowTransmitter(x) ↔ Transmitter(x) ∧ ∃f(FlowSignalTransmissionFunction(f) ∧ bearerOf(x,f)) ∧ ∃m(FlowMeasurementResult(m) ∧ hasInput(x,m)))
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: FlowTransmitter
<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_0000185 rdf:type owl:Class ; # FlowSignalTransmissionFunction
rdfs:subClassOf :COPI_0000030 ; # SignalTransmissionFunction
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty bfo:BFO_0000054 ; # realizedIn
owl:allValuesFrom :COPI_0000526 # FlowSignalTransmissionProcess
] ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty bfo:BFO_0000054 ; # realizedIn
owl:someValuesFrom :COPI_0000526 # FlowSignalTransmissionProcess
] ;
rdfs:label "flow signal transmission function"@en ;
rdfs:label "função de transmissão de sinal de fluxo"@pt-br .
:COPI_0000030 rdf:type owl:Class . # SignalTransmissionFunction
### Process type
:COPI_0000526 rdf:type owl:Class ; # FlowSignalTransmissionProcess
rdfs:subClassOf :COPI_0000035 ; # SignalTransmissionProcess
rdfs:label "flow signal transmission process"@en ;
rdfs:label "processo de transmissão de sinal de fluxo"@pt-br .
:COPI_0000035 rdf:type owl:Class . # SignalTransmissionProcess
:COPI_0000526 # FlowSignalTransmissionProcess
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasInput ;
owl:someValuesFrom :COPI_0000049 # FlowMeasurementResult
] ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasSpecifiedOutput ;
owl:someValuesFrom iof-core:InformationContentEntity
] .
### Equipment universal: FlowTransmitter
:COPI_0000118 rdf:type owl:Class ; # FlowTransmitter
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_0000185 # FlowSignalTransmissionFunction
]
)
] ;
rdfs:label "flow transmitter"@en ;
rdfs:label "transmissor de fluxo"@pt-br ;
iof-av:naturalLanguageDefinition "A flow transmitter is a transmitter that produces standardized output signals proportional to flow measurements from flow sensing elements."@en ;
skos:definition "A flow transmitter is a transmitter that produces standardized output signals proportional to flow measurements from flow sensing elements."@en ;
iof-av:naturalLanguageDefinition "Um transmissor de fluxo é um transmissor que produz sinais de saída padronizados proporcionais às medições de fluxo provenientes de elementos sensores de fluxo."@pt-br ;
rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty bfo:BFO_0000196 ; owl:someValuesFrom :COPI_0000058 ] ;
skos:definition "[ISO 15926-4] A <FLOW TRANSMITTER> is a <PROCESS VARIABLE TRANSMITTER> and a <FLOW MEASURING INSTRUMENT>"@en ;
skos:definition "[CFIHOS] A flow transmitter providing an output signal that is proportional to the flow inputs from a flow element."@en ;
skos:definition "[ISA 5.1] ISA 5.1 tag abbreviation 'FT'. First letter 'F': Flow, Flow Rate. Succeeding letters: 'T' = Transmit."@en ;
skos:definition "[POSC Caesar] A transmitter that is producing a standardized output signal dependent of a received input signal from a flow sensor."@en .
# Disjointness: FlowTransmitter and PressureTransmitter
[] rdf:type owl:AllDisjointClasses ;
owl:members ( :COPI_0000118 :COPI_0000144 ) . # FlowTransmitter, PressureTransmitter
# Disjointness: FlowTransmitter and TemperatureTransmitter
[] rdf:type owl:AllDisjointClasses ;
owl:members ( :COPI_0000118 :COPI_0000155 ) . # FlowTransmitter, TemperatureTransmitter
# Disjointness: FlowTransmitter and LevelTransmitter
[] rdf:type owl:AllDisjointClasses ;
owl:members ( :COPI_0000118 :COPI_0000131 ) . # FlowTransmitter, LevelTransmitter
Axiomatization Decision Log
1
Identity-Giving Function
Function class
FlowSignalTransmissionFunction
⊑ SignalTransmissionFunction
Realized in
FlowSignalTransmissionProcess
⊑ SignalTransmissionProcess
The identity-giving function is the transmission of standardized output signals proportional to flow measurements. This is a specialization of general SignalTransmissionFunction that specifically handles flow process variables. All definitions emphasize the conversion/transmission of flow measurement to standardized output signals.
✓
Expert review — Accepted
2
Genus Determination
Transmitter
Based on parent_candidates, 'transmitter' is the most specific appropriate superclass and is already enriched in our ontology with SignalTransmissionFunction. Flow transmitter is clearly a specialized type of transmitter that focuses on flow process variables. The ISO 15926 definition explicitly states it's a PROCESS VARIABLE TRANSMITTER, and CFIHOS/POSC definitions describe it as a transmitter with flow-specific functionality.
✓
Expert review — Accepted
3
Necessary Parts
No necessary parts recorded (concept may be primitive at this level).
These parts are universal to all flow transmitters - every instance needs a flow sensing capability and signal conditioning/transmission capability. Specific sensing technologies (differential pressure, electromagnetic, etc.) are differentia for subtypes.
✓
Expert review — Accepted
4
Process Participation Signature ⟨I, O, T⟩
Inputs (I)
FlowMeasurementResult
— from flow sensing element
Outputs (O)
InformationContentEntity
— proportional to flow rate
Transformation (T)
signal conversion and amplification - converts flow measurement to standardized electrical signal
Flow transmitters receive flow measurements from sensing elements and convert them to standardized output signals. They require electrical power for operation. The core transformation is measurement-to-signal conversion, not process fluid transformation.
✓
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
PressureTransmitter
TemperatureTransmitter
LevelTransmitter
C2: PressureTransmitter, TemperatureTransmitter, LevelTransmitter. These transmitter types have incompatible input signatures - they handle different process variables (pressure, temperature, level vs. flow) and cannot simultaneously be flow transmitters and other process variable transmitters.
Cross-Standard Observations
All sources consistently define flow transmitter as a signal transmission device for flow measurements. ISO 15926 provides the most complete taxonomic context (subclass of both process variable transmitter and flow measuring instrument). CFIHOS and POSC emphasize the proportional relationship between input flow and output signal. ISA 5.1 provides the standard tag designation 'FT'.
Source Definitions
4 sources
ISO 15926-4
FLOW TRANSMITTER ↗
Definition text withheld (copyrighted standard) — follow the source link above.
CFIHOS
flow transmitter
Definition text withheld (copyrighted standard) — follow the source link above.
isa5_1
Flow Transmitter ↗
Definition text withheld (copyrighted standard) — follow the source link above.
POSC Caesar
Flow 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 | #48 |
| Cluster | flow 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
