validated
equivalent
moisture meter
IRI:
http://www.inf.ufrgs.br/ontologies/copi#Moisturemeter
Generated on 2026-09-08
Natural Language Definition
EN
A moisture meter is an instrument that bears a moisture measurement function, using a moisture sensing element and a digital display to measure and indicate the moisture content of a sample or medium.
PT-BR
Um medidor de umidade e um instrumento que possui uma funcao de medicao de umidade, usando um elemento sensor de umidade e um display digital para medir e indicar o teor de umidade de uma amostra ou meio.
Formal Axioms
Semi-formal (Aristotelian)
Every moisture meter is an instrument that bears a moisture measurement function and has a moisture sensing element and a digital display as component parts, and conversely.
First-Order Logic Theory
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▸ Stored override
∀x (MoistureMeter(x) ↔ Instrument(x) ∧ ∃f (MoistureMeasurementFunction(f) ∧ bearerOf(x,f)) ∧ ∃e (MoistureSensingElement(e) ∧ hasComponentPartAtAllTimes(x,e)) ∧ ∃d (DigitalDisplay(d) ∧ hasComponentPartAtAllTimes(x,d)))
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: MoistureMeter
<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_0000758 rdf:type owl:Class ; # MoistureMeasurementFunction
rdfs:subClassOf iof-core:DesignedFunction ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty bfo:BFO_0000054 ; # realizedIn
owl:allValuesFrom :COPI_0000759 # MoistureMeasurementProcess
] ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty bfo:BFO_0000054 ; # realizedIn
owl:someValuesFrom :COPI_0000759 # MoistureMeasurementProcess
] ;
rdfs:label "moisture measurement function"@en ;
iof-av:naturalLanguageDefinition "A DesignedFunction that is realized in a MoistureMeasurementProcess and that consists in measuring and indicating the moisture content of a sample or medium."@en ;
skos:definition "A DesignedFunction that is realized in a MoistureMeasurementProcess and that consists in measuring and indicating the moisture content of a sample or medium."@en .
### Process type
:COPI_0000759 rdf:type owl:Class ; # MoistureMeasurementProcess
rdfs:subClassOf iof-core:MeasurementProcess ;
rdfs:label "moisture measurement process"@en ;
iof-av:naturalLanguageDefinition "A PlannedProcess in which a moisture sensing element detects moisture content and a digital display presents the measured value."@en ;
skos:definition "A PlannedProcess in which a moisture sensing element detects moisture content and a digital display presents the measured value."@en .
iof-core:MeasurementProcess rdf:type owl:Class .
:COPI_0000759 # MoistureMeasurementProcess
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 iof-core:MeasurementInformationContentEntity
] ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasSpecifiedOutput ;
owl:someValuesFrom :COPI_0000046 # VisualIndication
] .
### Equipment universal: MoistureMeter
:COPI_0000760 rdf:type owl:Class ; # MoistureMeter
owl:equivalentClass [
rdf:type owl:Class ;
owl:intersectionOf (
:COPI_0000091 # Instrument
[
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasFunction ; # Object branch (MaterialArtifact/Assembly/Object/FiatObjectPart)
owl:someValuesFrom :COPI_0000758 # MoistureMeasurementFunction
]
[
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasComponentPartAtAllTimes ;
owl:someValuesFrom :COPI_0000761 # MoistureSensingElement
]
[
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasComponentPartAtAllTimes ;
owl:someValuesFrom :COPI_0000751 # DigitalDisplay
]
)
] ;
rdfs:label "moisture meter"@en ;
iof-av:naturalLanguageDefinition "A moisture meter is an instrument that bears a moisture measurement function, using a moisture sensing element and a digital display to measure and indicate the moisture content of a sample or medium."@en ;
skos:definition "A moisture meter is an instrument that bears a moisture measurement function, using a moisture sensing element and a digital display to measure and indicate the moisture content of a sample or medium."@en ;
iof-av:naturalLanguageDefinition "Um medidor de umidade e um instrumento que possui uma funcao de medicao de umidade, usando um elemento sensor de umidade e um display digital para medir e indicar o teor de umidade de uma amostra ou meio."@pt-br ;
iof-av:semiFormalNaturalLanguageAxiom "Every moisture meter is an instrument that bears a moisture measurement function and has a moisture sensing element and a digital display as component parts, and conversely."@en ;
iof-av:firstOrderLogicAxiom "∀x (MoistureMeter(x) ↔ Instrument(x) ∧ ∃f (MoistureMeasurementFunction(f) ∧ bearerOf(x,f)) ∧ ∃e (MoistureSensingElement(e) ∧ hasComponentPartAtAllTimes(x,e)) ∧ ∃d (DigitalDisplay(d) ∧ hasComponentPartAtAllTimes(x,d)))"@en ;
skos:definition "[ISO 15926-4] A <MOISTURE METER> is an <INSTRUMENTATION ITEM> and a <MEASURING INSTRUMENT> with a digital display and a moisture sensing element, that is intended to measure and indicate a <MOISTURE>"@en .
:COPI_0000761 rdf:type owl:Class ; # MoistureSensingElement
rdfs:subClassOf iof-core:MaterialArtifact ;
rdfs:label "elemento de umidade de sensoriamento"@pt-br ;
rdfs:label "moisture sensing element"@en .
:COPI_0000751 rdf:type owl:Class ; # DigitalDisplay
rdfs:subClassOf iof-core:MaterialArtifact ;
rdfs:label "digital display"@en .
Axiomatization Decision Log
1
Identity-Giving Function
Function class
MoistureMeasurementFunction
⊑ DesignedFunction
Realized in
MoistureMeasurementProcess
⊑ MeasurementProcess
No already-enriched function is co-extensional: MOISTURE (any medium) is explicitly distinct from HUMIDITY (water vapour in air specifically) in ISO 15926-4's own taxonomy, so HumidityMeasurementFunction is not reused; mirrors that sibling's pattern (function_parent=DesignedFunction directly) exactly.
2
Genus Determination
Instrument
Matches the already-enriched 'humidity analyser' sibling's genus exactly; MEASURING INSTRUMENT (the literal ISO 15926-4 parent) is not itself an enriched cluster, so the concrete genus Instrument is used directly.
3
Necessary Parts
| Part class | Parent | Relation |
|---|---|---|
| MoistureSensingElement | MaterialArtifact | hasComponentPartAtAllTimes |
| DigitalDisplay | MaterialArtifact | hasComponentPartAtAllTimes |
Both parts are named verbatim in the ISO 15926-4 primary definition itself and are structurally distinct (sensing vs. display), so both are asserted as necessary.
4
Process Participation Signature ⟨I, O, T⟩
Inputs (I)
PortionOfFluid
— the sample or medium whose moisture content is sensed
Outputs (O)
MeasurementInformationContentEntity
— measured moisture content value
VisualIndication
— digital display of the measured moisture content
Transformation (T)
moisture content sensed by a moisture sensing element and presented as a digital indication
Standard sensing-and-indication signature, matching other Instrument-genus measurement devices. [Corrected 2026-09-10: replaced retired InformationBearingArtifact (ODR-021, resolved 2026-08-08) with two outputs matching sibling 'humidity analyser' exactly (MeasurementInformationContentEntity + VisualIndication), consistent with the DigitalDisplay necessary_part already asserted.]
5
Axiom Mode Decision
Necessary + Sufficient
— modelled as a defined class
(≡, EquivalentClass). Automatic classification is
appropriate for this concept.
Cross-Standard Observations
Only ISO 15926-4 defines this exact term in terms.db (no cross-source corroboration), but the definition itself is rich (names both the sensing element and the display verbatim), unlike many single-source ISO 15926-4 terms. Tertiary web search corroborated a capacitance-based sensing mechanism as one common implementation, but this was not written to source_definitions_used since the primary definition already sufficiently grounds the necessary_parts without needing tertiary backing.
Reviewer Notes
Step 2b (enrich-term skill): the primary ISO 15926-4 definition already names both structural parts verbatim (digital display, moisture sensing element), so no secondary/tertiary sourcing was needed to ground necessary_parts. A supplementary WebSearch corroborated capacitance-based sensing as a common mechanism but was not written to source_definitions_used (not needed, and a single result would have tripped the tertiary-triangulation requirement for no benefit).
