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Technical possibilities of the calibration laboratory - Temperature calibration

Measured variable temperature (resistance thermometer, thermocouples)

Resistance thermometers and base thermocouples are calibrated according to the guidelines DKD-R 5-1 and DKD-R 5-3, also with measuring transducers and measuring chains (also with software components).

Services for resistance thermometers

  • Calibration at fixed temperature points: water triple point and gallium melting point
  • Comparative calibration in the liquid bath and in the fluidizing solid bath up to 660 ° C
  • Comparison calibration in a metal block calibrator up to 660 ° C
  • Determination of self-heating at the gallium melting point
  • Determination of the hysteresis of the thermometer

Services for thermocouples

  • Batch test for thermal cables and elements up to 550 ° C (only as an accredited DAkkS calibration)
  • Inhomogeneity analysis
  • Comparative calibration in the liquid bath and in the fluidizing solid bath up to 660 ° C
  • Comparative calibration in a metal block calibrator up to 1000 ° C

Calibration item

Calibration range accredited

Calibration range (ISO)

Resistance thermometers

0,00 °C, 0,01 °C, 29,7646 °C

0,00 °C

Resistance thermometers

(-30…550) °C

(-30…660) °C

Thermocouples

(-30…550) °C

(-30…1000) °C

Transmitter with resistance thermometers

(-30…550) °C

(-30…660) °C

Transmitter with thermocouples

(-30…550) °C

(-30…1000) °C

Smallest measurable measurement uncertainties

Calibration item

Bereich Kleinste angebbare Messunsicherheit
Resistance thermometer

0,00 °C

25 mK

0,01 °C, 29,7646 °C

5 mK

(-30…100) °C

50 mK

(>100…400) °C

80 mK

(>400…550) °C

0,1 K

Resistance thermometers with transmitter

(-30…550) °C UPRT + 0,1 K
Base thermocouples

(-30…100) °C

0,3 K
(>100…400) °C

0,5 K

(>400…550) °C

0,7 K

Base thermocouples with transmitters

(-30…550) °C

UPRT + 0,5 K

UPRT is the expanded measurement uncertainty of the calibration of the resistance thermometer or the thermocouple

The smallest measurement uncertainty that can be specified is not necessarily feasible on every calibration item and may be less favorable for a particular thermometer.

Please note that there are minimum lengths for the thermometer to be calibrated:

Minimum lengths for the thermometer

Temperature range

DAkkS calibration

ISO calibration

> 101 °C

> 300 mm

> 200 mm

Works calibration is based on DKD-R 5-1 (for resistance thermometers) and DKD-R 5-3 (for thermocouples). With an ISO calibration, shorter thermometers can also be calibrated, which is then done in metal block calibrators. This will be asked when checking the contract.

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