Definition & axiom
⚠ Conflicts with the ISO 15926-4 primary definition
Label (EN)
differential pressure switch
Label (PT-BR)
Definition (EN)
Definition (PT-BR)
Semi-formal axiom (Aristotelian)
Axiom type
LLM classification basis: function-based → ≡
The concept is primarily defined by its function to switch or provide on/off signals based on differential pressure measurements, rather than by any specific physical mechanism or construction
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
DifferentialPressureSwitchingFunction → DifferentialPressureSwitchingProcess ⊑ MeasurementProcess
▼
COPI-Core operation
MeasurementProcess via process parent MeasurementProcess
LLM rationale:
The identity-giving function is to switch or provide on/off signals when measured differential pressure reaches a pre-set value, combining differential pressure measurement with switching action
▸
Expert review
2
Genus Proximus
✓ done
Instrument · Assembly
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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:
ISO 15926 explicitly states that a differential pressure switch is a pressure switch. From parent candidates, PRESSURE SWITCH is the most specific and appropriate superclass, though it is not yet enriched in our ontology
▸
Expert review
3
Differentia Specifica
✓ done
∃bearerOf.DifferentialPressureSwitchingFunction
▼
Conditions that distinguish
Differential Pressure Switch
from sibling classes under genus
Instrument.
Only what is not already entailed by the genus.
Differentia expression
Differentia (natural language)
LLM rationale:
The key differentia is the ability to measure differential pressure (pressure difference between two inputs) rather than absolute pressure, which requires dual pressure inputs and differential measurement capability
▸
Expert review
4
Necessary Parts
✓ done
no necessary parts
▼
Consider part-whole relations beyond subsumption:
hasComponentPartAtAllTimes (universal, structurally essential)
· hasComponentPartAtSomeTime (contingent, optional component)
LLM rationale:
Essential components for differential pressure measurement and switching functionality
▸
Expert review
5
Process Participation Signature ⟨I, O, T⟩
✓ done
PortionOfFluid → InformationContentEntity
▼
Inputs (I)
Outputs (O)
Transformation (T)
LLM rationale:
Takes two pressure inputs, measures their difference, and outputs electrical switching signal when preset threshold is reached
▸
Expert review
More
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 13 selected
▼
Select which CFIHOS/DEXPI properties inhere in every instance of Differential Pressure Switch as
bfo:Quality subclasses.
Each selected property →
:DifferentialPressureSwitchQuality ⊑ bfo:Quality, inheres in :DifferentialPressureSwitch
Custom axioms
none
▼
Axioms not produced by the pipeline. Each is appended verbatim as an
rdfs:subClassOf restriction on Differential Pressure Switch.
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 (2)
DIFFERENTIAL PRESSURE SWITCH — ClassOfFunctionalObject
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cfihos V2.0
differential pressure switch — TagAndEquipmentClass
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Provenance tiers (2)
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 219 · claude-sonnet-4-20250514
Created 2026-04-16 18:12
Updated 2026-09-08 12:26
