<?xml version="1.0" encoding="utf-8"?><rdf:RDF  xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"  xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"  xmlns:skos="http://www.w3.org/2004/02/skos/core#"  xmlns:map="http://www.w3c.rl.ac.uk/2003/11/21-skos-mapping#"  xmlns:dct="http://purl.org/dc/terms/"  xmlns:dc="http://purl.org/dc/elements/1.1/"><skos:ConceptScheme rdf:about="https://digilab.ptb.de/dkd/refType/vocab/">  <dc:title>Metrology Database</dc:title>  <dc:creator>German Calibration Service (DKD)</dc:creator>  <dc:contributor>Thomas Krah, Daniel Hutzschenreuter, Benjamin Gloger, Muhammed-Ali Demir, Moritz Jordan</dc:contributor>  <dc:publisher>Deutscher Kalibrierdienst (German Calibration Service)</dc:publisher>  <dc:rights></dc:rights>  <dc:subject>metrology, reference types, digital calibration certificate, certificate of conformity</dc:subject>  <dc:description><![CDATA[  ]]></dc:description>  <dc:date>2023-06-19</dc:date>  <dct:modified>2026-04-10 06:58:36</dct:modified>  <dc:language>en-US</dc:language>  </skos:ConceptScheme>  <skos:Concept rdf:about="https://digilab.ptb.de/dkd/refType/vocab/skos/104"><skos:prefLabel xml:lang="en-US">referenceAirPressure</skos:prefLabel> <skos:definition xml:lang="en-EN">reference air pressure for a conventional or calculated quantity value </skos:definition> <skos:definition xml:lang="de-DE">Referenzluftdruck für einen konventionellen oder berechneten Wert. </skos:definition> <skos:historyNote xml:lang="en-EN">
2023-11-15
Created
 </skos:historyNote> <skos:historyNote xml:lang="en-EN">




2024-02-12
Edited XML example (replaced &lt; and &gt; for machine readability)




 </skos:historyNote> <skos:historyNote xml:lang="en">2025-02-04: Adapted example to schema version 3.3.0 (replaced si:expandedUnc with si:measurementUncertaintyUnivariate) </skos:historyNote> <skos:historyNote xml:lang="en">2026-01-30:

Removed one example (formerly "Beispiel 1") as it was not related to the refType at all.
Renamed the remaining example from "Beispiel 2" to "Beispiel"
Added an english explanation to the example.
 </skos:historyNote> <skos:example xml:lang="ab">Beispiel: Angabe der Referenzbedingungen für einen konventionellen Wägewert (Der konventionelle Wägewert eines Gewichtsstückes ist eine Rechengröße, die einem Gewichtstück zugeordnet wird, wenn es bei einer Temperatur von 20 °C einem Bezugsgewichtstück der Dichte 8000 kg/m3 in Luft der Dichte 1,2 kg/m3 das Gleichgewicht hält. Er entspricht also dem Wert, den eine perfekte Waage für dieses Gewichtsstück bei den Referenzbedingungen anzeigt.)
Example: Specification of the reference conditions for a conventional weight value (The conventional weight value of a weight is a calculated value assigned to a weight when it balances with a reference weight of density 8000 kg/m3 in air with a density of 1.2 kg/m3 at a temperature of 20°C. It therefore corresponds to the value that a perfect scale will display for this weight in the reference conditions.)
 

</skos:example><skos:inScheme rdf:resource="https://digilab.ptb.de/dkd/refType/vocab/"/><skos:related rdf:resource="https://digilab.ptb.de/dkd/refType/vocab/skos/103"/><skos:broader rdf:resource="https://digilab.ptb.de/dkd/refType/vocab/skos/2"/>  <dct:created>2023-11-15 14:30:30</dct:created>  </skos:Concept></rdf:RDF>