Pt100 Model HS High-Temperature Precision Thermometers

Precision resistance thermometer model eXacal Pt100HS. With protective sheath of gas-tight ceramic and handmade 100 Ohm ceramic detector.

  • Temperature range: 0 °C to 850 °C
  • stable high temperature thermometer with good calibration capability
  • Protective sheath made of gastight ceramic
  • small measurement uncertainties with DAkkS calibration certificate
    The thermometer can be calibrated at fixed temperature points with smaller measurement uncertainties.


eXacal thermometers are calibrated in our own DAkkS calibration laboratory. The DAkkS accreditation ensures that all calibrations are traceable to national and international standards.

The calibration of eXacal resistance thermometers is carried out at ITS-90 fixed points. It is also possible to carry out calibrations according to the comparison method in liquid baths and calibration furnaces. The measurement uncertainty is calculated from many components. The largest contributions are reproducibility, ITS-90 function, self-heating and hysteresis.

Measurement Uncertainties

  • Small measurement uncertainties with DAkkS calibration certificate
  • Temperature fixed points up to aluminium freezing point 660,323 °C
  • ITS-90 standard thermometer for comparison calibration
Range Fixed Point Uncertainty
0,01 °C Water 6 mK
29,7646 °C Gallium 6 mK
156,5985 °C Indium 10 mK
231,928 °C Tin 11 mK
419,527 °C Zinc 21 mK
660,323 °C Aluminium 25 mk
150 mK @ 850 °C

The given measurement uncertainties correspond to k=2, include an ITS-90 function and are given for the respective range.

Technical data

Model eXacal Pt100HS
Temperature range 0 °C to 850 °C
Nominal resistance Pt100 (100 Ohm)
typical annual drift 2,5 mk
Connection type Four-wire
Connecting cable temperature resistant – very low EMF stranded wires from own production
Connection banana plugs or depending on configuration
Sheath material gas-tight ceramic
Thermometer wire Platinum
Handle ∅ 20 mm x 100 mm
diameter 6 mm
Length 500 mm
Connection cable 2 m
R0 100 Ohm ± 0,05 Ohm
Alpha 0,003850 ± 0,000005
Standard IEC 60751:2008
tolerance individual calibration
length 25 mm
recommended measuring current 1 mA
Self-heating 4 mK
DAkkS Calibration
Fixed point calibration 6 mK to 25 mK
Comparison calibration 15 mK to 150 mK


Questions about the thermometer?