<?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/371"><skos:prefLabel xml:lang="en-US">ITS-90</skos:prefLabel> <skos:definition xml:lang="de">Die angegebenen Temperaturwerte sind bezogen auf die Internationale Temperaturskala von 1990 (ITS-90) </skos:definition> <skos:definition xml:lang="en">The temperature values are related to the International Temperatur scala from 1990 (ITS-90) </skos:definition> <skos:scopeNote xml:lang="de">Die Temperaturwerte sind in der dargebotenen Einheit des Messgerätes anzugeben. Es wird empfohlen, die Temperaturwerte zusätzlich in Kelvin anzugeben, insofern dies nicht bereits die angegebene Einheit ist (siehe Example Note) und es sich um Kalibrierergebnisse handelt. </skos:scopeNote> <skos:scopeNote xml:lang="en">The temperature values have to be given in the unit specified for the measuring device. It is recommended that the temperature values are also given in Kelvin if this is not already the unit specified (see Example Note) and the values are calibration results. </skos:scopeNote> <skos:historyNote xml:lang="en">Created </skos:historyNote> <skos:note xml:lang="en">Comité International des Poids et Mesures (CIPM), ITS-90, https://www.bipm.org/en/committees/cc/cct/temperature-scales, Metrologia 27,3-10 (1990), CCT Guidebooks: Guides to Thermometry </skos:note> <skos:example xml:lang="en">
  
    Referenzwertwerte
    Reference values
  
  
    
      223.243 233.245 243.168 253.175 263.156 273.110 283.112 293.109 303.120 313.110 323.102 333.106 343.089 353.079 363.087
      \kelvin
    
    
      -49.907 -39.905 -29.982 -19.975 -9.994 -0.040 9.962 19.959 29.970 39.960 49.952 59.956 69.939 79.947 89.937
      \degreecelsius
    
  
 </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/5"/><skos:broader rdf:resource="https://digilab.ptb.de/dkd/refType/vocab/skos/117"/>  <dct:created>2026-01-16 21:17:04</dct:created>  </skos:Concept></rdf:RDF>