exported
equivalent
COPI_0000131
Level Transmitter
IRI:
https://www.inf.ufrgs.br/ontologies/copi/COPI_0000131
Generated onGerado em 2026-04-13
Natural Language DefinitionDefinição em Linguagem Natural
EN
A level transmitter is a transmitter that measures the level (height) of liquid or bulk solid material in a container and produces a standardized electrical output signal proportional to the measured level.PT-BR
Um transmissor de nível é um transmissor que mede o nível (altura) de material líquido ou sólido a granel em um recipiente e produz um sinal elétrico de saída padronizado proporcional ao nível medido.Formal AxiomsAxiomas Formais
Semi-formal (Aristotelian)Semi-formal (Aristotélico)
Every level transmitter is a transmitter that bears a LevelMeasurementAndTransmissionFunctionFirst-Order Logic TheoryTeoria em Lógica de Primeira Ordem
[Definition]∀x (LevelTransmitter(x) ↔ Transmitter(x) ∧ ∃f (LevelMeasurementAndTransmissionFunction(f) ∧ bearerOf(x,f)) ∧ ∃bearerOf.LevelMeasurementFunction) — Steps 1–3: genus + identity-giving function
[Function axiom: LevelMeasurementAndTransmissionFunction]∀f (LevelMeasurementAndTransmissionFunction(f) → ∀p (realizedIn(f,p) → LevelMeasurementAndTransmissionProcess(p)) ∧ ∃p (LevelMeasurementAndTransmissionProcess(p) ∧ realizedIn(f,p))) — Step 1: ∀ preserves type-type identity; ∃ rules out vacuous functions never realised
[Process participation signature]∀x ∀f ((LevelTransmitter(x) ∧ LevelMeasurementAndTransmissionFunction(f) ∧ bearerOf(x,f)) →
∃m (LevelMeasurementResult(m) ∧ participatesIn(m,f)) ∧
∃e (InformationContentEntity(e) ∧ participatesIn(e,f)) ∧
processType(f,MeasurementTransduction)) — Step 5: typed participants in the realising process
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: LevelTransmitter
<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
:LevelMeasurementAndTransmissionFunction rdf:type owl:Class ;
rdfs:subClassOf iof-core:DesignedFunction ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty bfo:BFO_0000054 ; # realizedIn
owl:allValuesFrom :LevelMeasurementAndTransmissionProcess
] ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty bfo:BFO_0000054 ; # realizedIn
owl:someValuesFrom :LevelMeasurementAndTransmissionProcess
] ;
rdfs:label "level measurement and transmission function"@en ;
rdfs:label "função de medição e transmissão de nível"@pt-br .
### Process type
:LevelMeasurementAndTransmissionProcess rdf:type owl:Class ;
rdfs:subClassOf :MeasurementProcess ;
rdfs:label "level measurement and transmission process"@en ;
rdfs:label "processo de medição e transmissão de nível"@pt-br .
:MeasurementProcess rdf:type owl:Class .
:LevelMeasurementAndTransmissionProcess
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasInput ;
owl:someValuesFrom :LevelMeasurementResult
] ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasSpecifiedOutput ;
owl:someValuesFrom :InformationContentEntity
] .
### Equipment universal: LevelTransmitter
:LevelTransmitter rdf:type owl:Class ;
owl:equivalentClass [
rdf:type owl:Class ;
owl:intersectionOf (
:Transmitter
[
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasFunction ; # Object branch (MaterialArtifact/Assembly/Object/FiatObjectPart)
owl:someValuesFrom :LevelMeasurementAndTransmissionFunction
]
)
] ;
rdfs:label "level transmitter"@en ;
rdfs:label "transmissor de nível"@pt-br ;
iof-av:naturalLanguageDefinition "A level transmitter is a transmitter that measures the level (height) of liquid or bulk solid material in a container and produces a standardized electrical output signal proportional to the measured level."@en ;
skos:definition "A level transmitter is a transmitter that measures the level (height) of liquid or bulk solid material in a container and produces a standardized electrical output signal proportional to the measured level."@en ;
iof-av:naturalLanguageDefinition "Um transmissor de nível é um transmissor que mede o nível (altura) de material líquido ou sólido a granel em um recipiente e produz um sinal elétrico de saída padronizado proporcional ao nível medido."@pt-br ;
rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty bfo:BFO_0000196 ; owl:someValuesFrom :COPI_0000058 ] ;
# Disjointness: LevelTransmitter and PressureTransmitter
[] rdf:type owl:AllDisjointClasses ;
owl:members ( :LevelTransmitter :PressureTransmitter ) .
# Disjointness: LevelTransmitter and TemperatureTransmitter
[] rdf:type owl:AllDisjointClasses ;
owl:members ( :LevelTransmitter :TemperatureTransmitter ) .
# Disjointness: LevelTransmitter and FlowTransmitter
[] rdf:type owl:AllDisjointClasses ;
owl:members ( :LevelTransmitter :FlowTransmitter ) .
Axiomatization Decision LogRegistro de Decisões
1 Identity-Giving FunctionFunção Identitária
Function class
LevelMeasurementAndTransmissionFunction
⊑ DesignedFunction
Realized in
LevelMeasurementAndTransmissionProcess
⊑ MeasurementProcess
The identity-giving function combines level measurement with signal transmission. This is what distinguishes a level transmitter from other transmitters (pressure, temperature, flow) and from level instruments that don't transmit signals.
2 Genus DeterminationDeterminação do Gênero
Transmitterbfo:Object (BFO_0000030)
From parent candidates, 'transmitter' is the most specific and appropriate genus. ISO 15926 defines level transmitter as a subtype of PROCESS VARIABLE TRANSMITTER, and transmitter is already enriched in our ontology with SignalTransmissionFunction. Level transmitter adds the specific level measurement capability to the general transmission function.
3 Differentia SpecificaDiferença Específica
∃bearerOf.LevelMeasurementFunctionA level transmitter is distinguished from other transmitters by its capability to measure level (height of liquid or bulk solid surface in a container).
The differentia is the level measurement function. The genus already provides signal transmission capability, so the differentia only needs to specify what process variable is being measured - level in this case.
4 Necessary PartsPartes Necessárias
No necessary parts recorded.
Level transmitters universally require a sensing element for level detection and signal conditioning electronics to produce the standardized output signal. The specific sensor technology varies by subtype.
Process Participation SignatureAssinatura de Participação em Processo
InputsEntradas
{'type': 'LevelMeasurementResult', 'count': 1, 'constraints': 'from process fluid/material'}
OutputsSaídas
{'type': 'InformationContentEntity', 'count': 1, 'constraints': 'proportional to measured level'}
TransformationTransformação
measurement and signal conversion - level information transduced to electrical signal
Level transmitters receive level information from the process and electrical power, converting level data to standardized electrical output signals (typically 4-20mA)
Disjoint WithDisjunto com
PressureTransmitter TemperatureTransmitter FlowTransmitter
C2: PressureTransmitter, TemperatureTransmitter, FlowTransmitter. Different process variables measured - level vs pressure vs temperature vs flow rate are mutually exclusive measurement functions
MetadataMetadados
| COPI IDCOPI ID | COPI_0000131 |
| IRIIRI | https://www.inf.ufrgs.br/ontologies/copi/COPI_0000131 |
| StatusStatus | exported |
| Axiom modeModo | equivalent |
| CreatedCriado | 2026-04-13 |
| UpdatedAtualizado | 2026-09-08 |
| LLM modelModelo LLM | claude-sonnet-4-20250514 |
| VersionVersão | 2026-10-07 |
ISA 5.1-2022 — 5_2_1/001_transmitter_with_integral_primary_element_bubble_format.png
Quick factsDados rápidos
| GenusGênero | Transmitter |
| Root classClasse raiz | MaterialArtifact |
| Axiom modeModo | equivalent |
| FunctionFunção | LevelMeasurementAndTransmissionFunction |
| ProcessProcesso | LevelMeasurementAndTransmissionProcess |
| PartsPartes | 0 |
Source DefinitionsDefinições nas Fontes
4 sources
ISO 15926-4
LEVEL TRANSMITTER
Definition text withheld (copyrighted standard) — follow the source link above.Texto da definição omitido (norma protegida por direitos autorais) — acesse o link da fonte acima.
CFIHOS
level transmitter
Definition text withheld (copyrighted standard) — follow the source link above.Texto da definição omitido (norma protegida por direitos autorais) — acesse o link da fonte acima.
ISA5_1
Level Transmitter
Definition text withheld (copyrighted standard) — follow the source link above.Texto da definição omitido (norma protegida por direitos autorais) — acesse o link da fonte acima.
POSC Caesar
Level Transmitter
Definition text withheld (copyrighted standard) — follow the source link above.Texto da definição omitido (norma protegida por direitos autorais) — acesse o link da fonte acima.
Provenance tiersCamadas de proveniência
primarystandardverbatimiso15926
A <LEVEL TRANSMITTER> is a <PROCESS VARIABLE TRANSMITTER> and a <LEVEL MEASURING INSTRUMENT>
secondarystandardverbatimcfihos
A transmitter that produces a continuous standardized output signal dependent of a received input signal from a level sensor.
secondarystandardverbatimisa5_1
ISA 5.1 tag abbreviation 'LT'. First letter 'L': Level. Succeeding letters: 'T' = Transmit.
secondarystandardverbatimposc_caesar
A transmitter that is producing a continuous standardized output signal dependent of a received input signal from a level sensor.