<?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/317"><skos:prefLabel xml:lang="en-US">calibrationMedium</skos:prefLabel> <skos:definition xml:lang="en-US">Information on the substance in or with which the calibration was carried out   and that was in touch with the calibration item (e.g. measuring tip) during the calibration. </skos:definition> <skos:definition xml:lang="de">Informationen über die Substanz in oder mit der die Kalibrierung durchgeführt wurde und die mit dem Kalibriergegenstand (z.B. Messspitze) während der Kalibrierung in Berührung war. </skos:definition> <skos:scopeNote xml:lang="de">Beispiele für das Kalibriermedium können sein:

Flüssigkeit in einem Temperierbad
Gas in dem ein Feuchtesensor kalibriert wurde
Kühlmedium in dem ein Referenzwiderstand während seiner Kalibrierung eingetaucht war
Flüssigkeit mit der eine Pipettenkalibrierung durchgeführt wurde
Druckübertragungsmedium mit dem die Kalibrierung eines Druckmessgerätes durchgeführt wurde.
 </skos:scopeNote> <skos:scopeNote xml:lang="en-US">Some examples of a calibration medium are:

liquid in a temperature calibration bath
gas in which a humidity sensor was calibrated
cooling medium in which a reference resitor was immersed during its calibration
liquid that was used for the calibration of a pipette.
pressure-transmitting medium for the calibration of presssure gauges.
 </skos:scopeNote> <skos:historyNote xml:lang="en-US">2025-07-03 Created </skos:historyNote> <skos:historyNote xml:lang="en-US">2025-11-06 Added 3 XML examples </skos:historyNote> <skos:example xml:lang="en-US">&lt;!-- Option 1: Angabe der CAS-Nr./ Specification of the CAS no. --&gt;
&lt;dcc:measuringEquipment refType="basic_calibrationMedium"&gt;
    &lt;dcc:name&gt;
        &lt;dcc:content lang="de"&gt;Kalibriermedium&lt;/dcc:content&gt;
        &lt;dcc:content lang="en"&gt;Calibration medium&lt;/dcc:content&gt;
    &lt;/dcc:name&gt;
    &lt;dcc:equipmentClass&gt;
        &lt;dcc:reference&gt;CAS Database&lt;/dcc:reference&gt;
        &lt;dcc:classID&gt;132259-10-0&lt;/dcc:classID&gt;
        &lt;dcc:link&gt;https://commonchemistry.cas.org/&lt;/dcc:link&gt;
    &lt;/dcc:equipmentClass&gt;
    &lt;dcc:description&gt;
        &lt;dcc:name&gt;
            &lt;dcc:content lang="de"&gt;Luft&lt;/dcc:content&gt;
            &lt;dcc:content lang="en"&gt;air&lt;/dcc:content&gt;
        &lt;/dcc:name&gt;
    &lt;/dcc:description&gt;
&lt;/dcc:measuringEquipment&gt; </skos:example> <skos:example xml:lang="en-US">&lt;!-- Option 2: Angabe feststehender Begriff, Erklärung in Expertenbericht (alternativ auch Norm etc. möglich)/ Specification of a fixed term, explanation in an export report (alternatively, a norm etc. is also possible)--&gt;
&lt;dcc:measuringEquipment refType="basic_calibrationMedium"&gt;
    &lt;dcc:name&gt;
        &lt;dcc:content lang="de"&gt;Kalibriermedium&lt;/dcc:content&gt;
         &lt;dcc:content lang="en"&gt;calibration medium&lt;/dcc:content&gt;
    &lt;/dcc:name&gt;
     &lt;dcc:equipmentClass&gt;
         &lt;dcc:reference&gt;DKD-E x-y&lt;/dcc:reference&gt;
          &lt;dcc:classID&gt;Nitrogen&lt;/dcc:classID&gt;
                &lt;dcc:link&gt;https://www.ptb.de/cms/metrologische-dienstleistungen/dkd/publikationen.html&lt;/dcc:link&gt;
        &lt;!-- Alternativ: Angabe DOI --&gt;
     &lt;/dcc:equipmentClass&gt;
     &lt;dcc:description&gt;
          &lt;dcc:name&gt;
             &lt;dcc:content lang="de"&gt;Luft&lt;/dcc:content&gt;
             &lt;dcc:content lang="en"&gt;air&lt;/dcc:content&gt;
          &lt;/dcc:name&gt;
     &lt;/dcc:description&gt;
 &lt;/dcc:measuringEquipment&gt; </skos:example> <skos:example xml:lang="en-US">&lt;!-- Option 3: Angabe eines verwendeten Materials (optional mit Zertifikat)/ Specification of materials used (optionally with certificate)  --&gt;
&lt;dcc:measuringEquipment refType="basic_calibrationMedium"&gt;
    &lt;dcc:name&gt;
        &lt;dcc:content lang="de"&gt;Kalibriermedium&lt;/dcc:content&gt;
        &lt;dcc:content lang="en"&gt;Calibration medium&lt;/dcc:content&gt;
     &lt;/dcc:name&gt;
     &lt;dcc:description&gt;
         &lt;dcc:name&gt;
             &lt;dcc:content lang="de"&gt;Luft&lt;/dcc:content&gt;
              &lt;dcc:content lang="en"&gt;air&lt;/dcc:content&gt;
         &lt;/dcc:name&gt;
    &lt;/dcc:description&gt;
    &lt;dcc:certificate&gt;
        &lt;dcc:referral&gt;
            &lt;dcc:content lang="de"&gt;Kalibrierschein ohne Akkreditierungssymbol&lt;/dcc:content&gt;
            &lt;dcc:content lang="en"&gt;CalibrationCertificate without accreditation symbol&lt;/dcc:content&gt;
        &lt;/dcc:referral&gt;
        &lt;dcc:referralID&gt;BAM-202x-12345&lt;/dcc:referralID&gt;
        &lt;dcc:procedure&gt;analogue&lt;/dcc:procedure&gt;
        &lt;dcc:value&gt;analogue&lt;/dcc:value&gt;
        &lt;dcc:traceable&gt;false&lt;/dcc:traceable&gt;
    &lt;/dcc:certificate&gt;
    &lt;dcc:manufacturer&gt;
        &lt;dcc:name&gt;
            &lt;dcc:content lang="de"&gt;Gashersteller&lt;/dcc:content&gt;
            &lt;dcc:content lang="en"&gt;gas manufacturer&lt;/dcc:content&gt;
        &lt;/dcc:name&gt;
        &lt;dcc:location&gt;
            &lt;dcc:city&gt;Stadt&lt;/dcc:city&gt;
        &lt;/dcc:location&gt;
    &lt;/dcc:manufacturer&gt;
    &lt;dcc:identifications&gt;
        &lt;dcc:identification&gt;
            &lt;dcc:issuer&gt;calibrationLaboratory&lt;/dcc:issuer&gt;
            &lt;dcc:value&gt;123456&lt;/dcc:value&gt;
            &lt;dcc:name&gt;
                &lt;dcc:content lang="de"&gt;interne Flaschennummer&lt;/dcc:content&gt;
                &lt;dcc:content lang="en"&gt;internal bottle number&lt;/dcc:content&gt;
            &lt;/dcc:name&gt;
        &lt;/dcc:identification&gt;
    &lt;/dcc:identifications&gt;
&lt;/dcc:measuringEquipment&gt; </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/90"/><skos:broader rdf:resource="https://digilab.ptb.de/dkd/refType/vocab/skos/2"/>  <dct:created>2025-07-03 20:24:13</dct:created>  </skos:Concept></rdf:RDF>