{"id":3194,"date":"2024-04-18T17:04:54","date_gmt":"2024-04-18T15:04:54","guid":{"rendered":"https:\/\/www.klasmeier.com\/kalibrierung-von-widerstandsthermometern\/"},"modified":"2025-10-23T10:50:28","modified_gmt":"2025-10-23T08:50:28","slug":"kalibrierung-von-widerstandsthermometern","status":"publish","type":"page","link":"https:\/\/www.klasmeier.com\/en\/kalibrierdienst-klasmeier\/kalibrierung-von-widerstandsthermometern\/","title":{"rendered":"Calibration of resistance thermometers"},"content":{"rendered":"\n
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Precise calibration for all resistance thermometers \u2013 flexible, accredited, reliable<\/strong><\/h3>\n\n\n\n

We calibrate your resistance thermometers<\/strong> (temperature sensors such as Pt100, Pt25, etc.) and direct-reading measuring devices<\/strong> using state-of-the-art methods \u2013 either by comparison or fixed-point calibration. Our accredited laboratory (DIN EN ISO\/IEC 17025) provides you with internationally recognized calibration certificates (DAkkS-compliant) with individually tailored measurement uncertainties \u2013 precisely tailored to your application.<\/p>\n\n\n\n

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Our services<\/strong><\/h2>\n\n\n\n


<\/i><\/mark> Accredited calibration of resistance thermometers and direct-reading measuring instruments
<\/strong><\/i><\/mark> Temperature range: -196\u00b0C to +961\u00b0C \u2013 complete coverage of ITS-90<\/strong>
<\/i><\/mark> Calibration method: fixed-point calibration at ITS-90 fixed points or comparison calibration<\/strong>
<\/i><\/mark> Proficiency testing according to DIN EN ISO\/IEC 17043<\/strong>
<\/i><\/mark> Repair service for thermometers in our own factory<\/strong><\/p>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n

Your benefits at a glance<\/h2>\n\n\n\n
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Various calibration methods<\/strong><\/h4>\n\n\n\n

The choice is yours:<\/p>\n\n\n\n

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Fixed-point calibration
at melting points<\/strong>
(economical, low measurement uncertainty)<\/h4>\n<\/div>\n\n\n\n
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Comparative calibration
<\/strong>(freely selectable measuring points, cost-effective)<\/h4>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n
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Kurze Durchlaufzeiten von 5 Arbeitstagen<\/strong><\/h4>\n\n\n\n

\u2192 Minimieren Sie Ausfallzeiten \u2013 Ihre Widerstandshermometer sind schnell wieder im Einsatz.<\/p>\n<\/div>\n<\/div>\n\n\n\n

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Kleine Messunsicherheiten<\/strong><\/h4>\n\n\n\n

\u2192 Profitieren Sie von h\u00f6chster Pr\u00e4zision:
Wir holen das Beste aus Ihrem Thermometer heraus.<\/p>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n

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Everything from a single source<\/strong><\/h4>\n\n\n\n

\u2192 Complete package from calibration and suitability testing to repairs \u2013 all at Klasmeier.<\/p>\n<\/div>\n<\/div>\n\n\n\n

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Central location in Fulda<\/strong><\/h4>\n\n\n\n

\u2192 Perfect accessibility \u2013 bring your thermometer in person or use our secure courier service.<\/p>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n

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Paperless documentation<\/strong><\/h4>\n\n\n\n

\u2192 Accessible at any time, legally binding signature.
Complete transparency and security via our modern cloud solution.<\/p>\n\n\n\n

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Measurement uncertainties in accredited calibration of resistance thermometers according to DIN EN ISO\/IEC 17025 (DAkkS)<\/h3>\n<\/div>\n\n\n\n
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Measuring range<\/strong><\/th>Procedure<\/strong><\/th>Measurement uncertainty<\/strong><\/th><\/tr><\/thead>
-189,3442 \u00b0C to 0 \u00b0C<\/td>DKD-R 5-1 Fixed points: Ar, Hg, TPW<\/td>5,5 mK<\/td><\/tr>
-38,8344 \u00b0C to 29,7646 \u00b0C<\/td>DKD-R 5-1 Fixed points: Hg, TPW, Ga<\/td>3,5 mK<\/td><\/tr>
0 \u00b0C to 29,7646 \u00b0C<\/td>DKD-R 5-1 Fixed points: TPW, Ga<\/td>2,5 mK<\/td><\/tr>
0 \u00b0C to 156,5985 \u00b0C<\/td>DKD-R 5-1 Fixed points: TPW, In Melting Points<\/td>5,5 mK<\/td><\/tr>
0 \u00b0C to 231,928 \u00b0C<\/td>DKD-R 5-1 Fixed points: TPW, In, Sn Melting Points<\/td>7,0 mK<\/td><\/tr>
0 \u00b0C to 419,527 \u00b0C<\/td>DKD-R 5-1 Fixed points: TPW, Sn, Zn Melting Points<\/td>12 mK<\/td><\/tr>
0 \u00b0C to 660,323 \u00b0C<\/td>DKD-R 5-1 Fixed points: TPW, Sn, Zn, Al Melting Points<\/td>20 mK<\/td><\/tr><\/tbody><\/table>
Calibration at fixed temperature points with characteristic curve determination. The measurement uncertainty refers to the characteristic curve in the specified range.<\/figcaption><\/figure>\n\n\n\n
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Measuring range<\/strong><\/th>Procedure<\/strong><\/th>Measurement uncertainty<\/strong><\/th><\/tr><\/thead>
-196 \u00b0C<\/td>DKD-R 5-1 (DIN EN IEC 60751) in liquid nitrogen with compensation block<\/td>15 mK<\/td><\/tr>
-180 \u00b0C to -80 \u00b0C<\/td>DKD-R 5-1 (DIN EN IEC 60751) in the cryostat<\/td>60 mK<\/td><\/tr>
-80 \u00b0C to -60\u00b0C
> -60 \u00b0C to 90 \u00b0C<\/td>		DKD-R 5-1 (DIN EN IEC 60751) in a calibration oven or liquid bath<\/td>15 mK
10 mK<\/td><\/tr>
> 90 \u00b0C to 200 \u00b0C
> 200 \u00b0C to 500 \u00b0C
> 500 \u00b0C to 660 \u00b0C
> 660 \u00b0C to 962 \u00b0C<\/td>		DKD-R 5-1 (DIN EN IEC 60751) in a calibration furnace, liquid or
solid bath<\/td>		30 mK
40 mK
50 mK
0,15 K<\/td><\/tr><\/tbody><\/table>
Comparison with standard resistance thermometers.<\/figcaption><\/figure>\n\n\n\n
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Requirements for the calibration of resistance thermometers<\/h2>\n\n\n\n
Sensor type<\/td>Temperature range<\/td>Minimum immersion depth<\/td>Max. diameter<\/td>Note<\/td><\/tr>
PRT<\/td>-196 \u00b0C<\/td>300 mm<\/td><8 mm<\/td>Boiling point of nitrogen<\/td><\/tr>
PRT<\/td>-180 \u00b0C to -81 \u00b0C<\/td>480 mm<\/td><7,5 mm<\/td>Low-temperature cryostat<\/td><\/tr>
PRT<\/td>-80 \u00b0C to 230 \u00b0C<\/td>100 mm<\/td>–<\/td>Calibration bath, good homogeneity<\/td><\/tr>
PRT<\/td>231 \u00b0C to 700 \u00b0C<\/td>300 mm<\/td><8 mm<\/td>Calibration furnace<\/td><\/tr>
PRT<\/td>701 \u00b0C to 962 \u00b0C<\/td>450 mm<\/td><8 mm<\/td>High temperatures, greater depth required<\/td><\/tr>
Thermocouple<\/td>196 \u00b0C<\/td>300 mm<\/td><8 mm<\/td>Boiling point of nitrogen<\/td><\/tr>
Thermocouple<\/td>-180 \u00b0C to -81 \u00b0C<\/td>480 mm<\/td><7,5 mm<\/td>Low-temperature cryostat<\/td><\/tr>
Thermocouple<\/td>-80 \u00b0C to 230 \u00b0C<\/td>100 mm<\/td>–<\/td>Calibration bath<\/td><\/tr>
Thermocouple<\/td>231 \u00b0C to 1200 \u00b0C<\/td>190 mm<\/td><8 mm<\/td>Calibration bath<\/td><\/tr>
Au\/Pt & Pt\/Pd<\/td>0 \u00b0C to 1200 \u00b0C<\/td>480 mm<\/td><8 mm<\/td>Noble metal thermocouple<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
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This is why our fixed point calibration is particularly reliable<\/strong><\/h3>\n\n\n\n

We calibrate not only SPRTs, but also all types of resistance thermometers at official ITS-90 temperature fixed points\u2014with a clear goal: reliable, long-term stable measurement results for your applications.<\/p>\n\n\n\n

Our process includes:<\/strong><\/p>\n\n\n\n