pressure
Let an agent handle pressure by kind, units, measurement and safety, and route blood pressure questions to health guidance without diagnosis.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify
Researched by: Claude
Purpose and description
Let an agent handle pressure by kind, units, measurement and safety, and route blood pressure questions to health guidance without diagnosis.
Force applied perpendicular to a surface per unit area, measured in pascals (N/m2); includes atmospheric, hydrostatic, gas and blood pressure, expressed as absolute or gauge pressure.
What it is for: Engineering, weather, medicine and everyday devices.
It can be convert pressure units; distinguish absolute and gauge pressure; read gauges and sensors; check pressure equipment safety.
Distinguishing features
Force per unit area
Scalar quantity
Many units in use
Relevant to safety
What it looks like
Not visible; shown on gauges, barometers and monitors.
Physical character
standard atmosphere: 101325 Pa
1 bar: 100000 Pa
How it is recognised
Units: Pa, bar, psi, mmHg, atm
Gauge versus absolute readings
Social pressure is a different sense
Related models
is a kind of - category
is measured in - unit
is measured by - instruments
includes - medical sense
In practice
Families and kinds
atmospheric pressure
hydrostatic pressure
gas pressure
blood pressure
tyre pressure
Identifiers
SI unit pascal (Pa) unit
Standards and regulation
SI Brochure
EU Pressure Equipment Directive
Blood pressure measurement guidelines
Failure modes and hazards
Pressure vessel failure
Confusing gauge and absolute pressure
Agents interpreting personal blood pressure readings
Also called
+31
Where this came from
wikidata · CC0 1.0
Also registered as vr.tr.pressure-state
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 4 bundles · 8 layers · 8 findings · 16 questions.
Quantity Which pressure.
Kind and reference matter.
Kind
Atmospheric, gas.
Kind
Pressure kind.
- Which kind of pressure is meant? definition
- Is it absolute or gauge pressure? definition
Units
Conversion.
Units
Units.
- What is the value in pascals or another unit? measurement
- Which unit is conventional here? definition
Measurement Instruments.
Instruments measure pressure.
Instrument
Gauges.
Instrument
Instrument.
- Which instrument measures it? definition
- How accurate is it? measurement
Calibration
Accuracy.
Calibration
Calibration.
- When was the gauge last calibrated? provenance
- Against which standard? provenance
Safety Equipment.
Pressure can be dangerous.
Equipment
Vessels.
Equipment
Pressure equipment.
- What is the maximum allowable pressure of this equipment? measurement
- Is it inspected as required? provenance
Tyres
Everyday.
Tyres
Tyre pressure.
- What tyre pressure does the manufacturer specify? provenance
- Should it be checked cold? action
Health Blood pressure.
Clinicians interpret readings.
Reading
Measurement.
Reading
Blood pressure reading.
- How is blood pressure measured correctly, according to guidelines? provenance
- Is a very high reading with symptoms an emergency? boundary
Advice
Clinician.
Advice
Advice limit.
- Is the user asking to interpret their own readings? boundary
- How should they be referred to a clinician? action
What the second pass must settle
- Should pressure kinds be separate entries?
- How should unit conversion be linked?
- How should blood pressure be split off?