{"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":"2026-05-12T15:33:32","modified_gmt":"2026-05-12T13:33:32","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 instruments<\/strong> using state-of-the-art methods \u2013 optionally 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 suited measurement uncertainties \u2013 precisely tailored to your application. <\/p>\n\n\n\n

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Our Services<\/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 – full coverage of ITS-90<\/strong><\/i><\/mark> Calibration methods: 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 manufactory<\/strong><\/p>\n<\/div>\n<\/div>\n<\/div>\n\n

Your advantages at a glance<\/h2>\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 <\/strong>at melting points<\/strong>(economical, low measurement uncertainty)<\/h4>\n<\/div>\n\n\n\n
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Comparison calibration<\/strong>(freely selectable measurement points, cost-effective)<\/h4>\n<\/div>\n<\/div>\n<\/div>\n\n
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Short turnaround times of 5 working days<\/strong><\/h4>\n\n\n\n

\u2192 Minimize downtime \u2013 your resistance thermometers are quickly back in use.<\/p>\n<\/div>\n<\/div>\n\n\n\n

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Low measurement uncertainties<\/strong><\/h4>\n\n\n\n

\u2192 Benefit from the highest precision: We get the best out of your thermometer.<\/p>\n<\/div>\n<\/div>\n<\/div>\n\n

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

\u2192 Complete package from calibration and proficiency testing to repair \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 drop off your thermometer in person or use our secure courier service.<\/p>\n<\/div>\n<\/div>\n<\/div>\n\n

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

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

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Measurement uncertainties for an accredited calibration of resistance thermometers according to DIN EN ISO\/IEC 17025 (DAkkS)<\/h3>\n<\/div>\n\n
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Measuring range<\/strong><\/th>Method<\/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 temperature fixed 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>Method<\/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 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 calibration furnace or liquid bath<\/td>15 mK10 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 calibration furnace, liquid or solid bath<\/td>30 mK40 mK50 mK0.15 K<\/td><\/tr><\/tbody><\/table>
Comparison with standard resistance thermometers.<\/figcaption><\/figure>\n\n\n\n
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Minimum requirements for the calibration of resistance thermometers<\/h2>\n\n
Sensor type<\/td>Temperature range<\/td>Minimum immersion depth<\/td>Max. diameter <\/td>Remark<\/td><\/tr>
PRT<\/td>-196\u00b0C<\/td>300 mm<\/td><8 mm<\/td>Nitrogen boiling point<\/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>Nitrogen boiling point<\/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 furnace<\/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
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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 \u2013 with one clear goal: reliable, long-term stable measurement results for your applications.<\/p>\n\n\n\n

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