DAkkS Calibration of temperature fixed points
Temperature fixed points are calibrated by comparison with reference temperature fixed points using highly stable standard resistance thermometers (SPRT). The temperature fixed point calibration is provided with a DAkkS calibration certificate as standard.
All types of ITS-90 temperature fixed points (slim and primary temperature fixed points, ISO tower)
Water triple point cells of any design
Commissioning in heat pipes
Highly stable SPRTs and MicroK Gold as measurement technology
Accredited calibration according to DIN EN ISO/IEC 17025 (DAkkS) of temperature fixed points
Accredited calibration according to DIN EN ISO/IEC 17025 (DAkkS) of an ITS-90 temperature fixed-point cell
learn more
Accredited calibration according to DIN EN ISO/IEC 17025 (DAkkS) of a temperature fixed point.
Accredited calibration according to DIN EN ISO/IEC 17025 (DAkkS) of an ITS-90 temperature fixed-point cell (metal or quartz mantle) by comparison with a reference fixed-point cell using highly stable reference resistance thermometers. The following measurement uncertainties are achieved:
| Fixed Point | Temperature | Measurement Uncertainty |
| Mercury | -38.8344 °C | 2.5 mK |
| Water | 0.01 °C | 0.35 mK |
| Gallium | 29.7646 °C | 1.5 mK |
| Indium | 156.5985 °C | 4 mK |
| Tin | 231.928 °C | 5 mK |
| Zinc | 419.527 °C | 8.5 mK |
| Aluminum | 660.323 °C | 20 mK |
The minimum immersion depth of the thermometer is 190 mm (at -196 °C: 300 mm).
The maximum outer diameter is 8 mm.
The achievable measurement uncertainties depend on the test specimen.
Calibration duration: approximately 5 working days or as agreed.
Measurement uncertainties for a DAkkS calibration
| Measuring range | Procedure | Measurement uncertainty |
|---|---|---|
| 0,01 °C | G-ITS-90, Part 2.2:2018 Water triple point | 0,35 mK * |
| -38,8344 °C | G-ITS-90, Part 2.4:2021 Mercury triple point | 2,5 mK |
| 29,7646 °C | G-ITS-90, Part 2.4:2021 Gallium melting point | 1,5 mK |
| 156,5985 °C | KA16-10-02:2020-01 Indium melting point | 4,0 mK |
| 231,928 °C | KA16-10-02:2020-01 Tin melting point | 5,0 mK |
| 419,527 °C | KA16-10-02:2020-01 Zinc melting point | 8,5 mK |
| 660,323 °C | KA16-10-02:2020-01 Aluminium melting point | 20 mK |
* Vergleiche mit TPW-Referenzfixpunktzellen (Referenziert gebildet aus mehreren TPW-Referenzzellen).
Digital archive Klasmeier Cloud:
Calibration documents quickly and easily available
The new Klasmeier Cloud – the perfect archive for all calibration documents. From now on, our customers will find a QR code on all devices calibrated by Klasmeier, with which they can quickly and easily access our digital archive.
Especially useful: In addition to all calibration documents, the contact details of the relevant contact person at Klasmeier are also always available there. So even five or more years from now, if you have any questions about your calibration product, you can find the information you need with just one click.
Finding the right calibration solution for you
Questions about our calibration services?
Please send your questions or enquiries to Mr Boris Kalb: