Definition & axiom
⚠ Conflicts with the ISO 15926-4 primary definition
Label (EN)
gas detector
Label (PT-BR)
Definition (EN)
Definition (PT-BR)
Semi-formal axiom (Aristotelian)
Axiom type
LLM classification basis: function-based → ≡
Gas detector is defined by its identity-giving function to detect the presence of a specified concentration of gas, regardless of the specific sensing technology or physical implementation used.
Validation status
Why primitive (necessary only)
Reviewer notes
FOL theory & disjointness
First-order logic theory (generated)
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Disjoint with
▸
Expert review
Axiomatization steps
1
Identity-Giving Function
✓ done
GasDetectionFunction → GasDetectionProcess ⊑ MeasurementProcess
▼
COPI-Core operation
MeasurementProcess via process parent DetectionProcess
LLM rationale:
The identity-giving function is gas detection - sensing the presence of a specified concentration of gas. This is a specialization of the general DetectionFunction already established in the ontology for the detector class.
▸
Expert review
2
Genus Proximus
✓ done
Detector · Assembly
▼
Genus (genus proximum)
Most specific superclass — may be a domain class like "Valve" or an IOF-Core root.
BFO/IOF-Core Root
bfo:Object branch
bfo:ObjectAggregate branch
bfo:ImmaterialEntity branch
LLM rationale:
The parent_candidates and all source definitions consistently identify this as a specialized type of detector. The detector class is already enriched in our ontology with DetectionFunction and Assembly genus, making it the appropriate immediate superclass.
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Expert review
3
Differentia Specifica
✓ done
∃bearerOf.GasDetectionFunction
▼
Conditions that distinguish
Gas Detector
from sibling classes under genus
Detector.
Only what is not already entailed by the genus.
Differentia expression
Differentia (natural language)
LLM rationale:
The differentia is the specific GasDetectionFunction - the capability to sense gas presence at specified concentrations. This is more specific than the generic DetectionFunction inherited from detector, and distinguishes gas detectors from other detector subtypes.
▸
Expert review
4
Necessary Parts
✓ done
GasDetectingMeasuringElement
▼
Consider part-whole relations beyond subsumption:
hasComponentPartAtAllTimes (universal, structurally essential)
· hasComponentPartAtSomeTime (contingent, optional component)
LLM rationale:
Gas detectors require a specialized gas-detecting measuring element as their core sensing component. General sensing elements inherited from detector are too broad for this specialized detection function.
▸
Expert review
5
Process Participation Signature ⟨I, O, T⟩
✓ done
PortionOfGas → InformationContentEntity
▼
Inputs (I)
Outputs (O)
Transformation (T)
LLM rationale:
Gas detectors take atmospheric gas portions as input and produce detection signals indicating concentration levels. The transformation involves chemical or physical sensing mechanisms.
▸
Expert review
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Alternative labels
none
▼
Synonyms / alternative labels (comma-separated) — skos:altLabel
Language auto-detected on export (PT if the label contains accents, EN otherwise).
Properties as BFO qualities
0 of 17 selected
▼
Select which CFIHOS/DEXPI properties inhere in every instance of Gas Detector as
bfo:Quality subclasses.
Each selected property →
:GasDetectorQuality ⊑ bfo:Quality, inheres in :GasDetector
Custom axioms
none
▼
Axioms not produced by the pipeline. Each is appended verbatim as an
rdfs:subClassOf restriction on Gas Detector.
Write the restriction block in Turtle syntax (without the leading
rdfs:subClassOf).
Example: [ owl:onProperty :hasPart ; owl:someValuesFrom :Wellhead ]
Cross-standard divergences
none detected yet
▼
Click "Detect divergences" to analyse cross-standard disagreements for this cluster.
Source Definitions (3)
GAS DETECTOR — ClassOfFunctionalObject
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cfihos V2.0
gas detector — TagAndEquipmentClass
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Gas Detector — Class
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Provenance tiers (3)
Sources the pipeline cited while building this entry. Verbatim = the quote was copied word-for-word from that source; summary = paraphrased.
OWL/Turtle preview
Download .ttl
Numeric
COPI_* IRIs from copi-iri-map.tsv, with the readable name as a trailing comment. Names not yet in the map stay readable.
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ID 194 · claude-sonnet-4-20250514
Created 2026-04-16 18:12
Updated 2026-09-24 15:22
