Precision thermometer

Resistance thermometers and thermocouples


eXacal precision thermometers are used for precise temperature measurements or as calibration standards. They have been continuously optimised over many years in our thermometer manufactory to ensure the highest measurement accuracy. The range of eXacal thermometers is wide and can be used in a temperature range of -200 °C to 1200 °C. Our resistance thermometers offer a robust alternative to the extremely fragile ITS-90 standard thermometers. The eXacal thermocouples, made of platinum, are available with or without stainless steel reference junction.




Precision thermometer

Precision thermometer: Perfect as a temperature standard for calibrations or for precise temperature measurements. Available both as resistance thermometers (Pt100) and as noble metal thermocouples of types R/S/B, Pt/Pd and Pt/Au.




Thermometers for special applications

Special designs: We also manufacture precision thermometers to individual customer requirements, including difference thermometers, angled temperature probes and thermometers to special customer specifications.



Immersion thermometers


The eXacal immersion thermometers (platinum resistance thermometers) are temperature sensors designed for extreme environments where both the junction and leads must withstand temperatures throughout the temperature range of the temperature sensor. These immersion thermometers can be used in various applications including the calibration of sensors in laboratory coolers, autoclaves, ovens, stability test chambers and incubators. They can be fully immersed in liquids or dry media.




Thermometer Manufacture – Precision thermometers made by hand

Our eXacal precision thermometers are handmade in our manufactory in Fulda, Germany. They are specially designed for precise temperature measurements in the range from -200°C to 1200°C. Our expertise goes beyond the product: we also develop specialised tools and manufacturing processes. From design to final DAkkS calibration, we are completely independent of external suppliers, which ensures the high quality of our thermometers.


Calibration of eXacal thermometers

eXacal thermometers are calibrated in our own DAkkS calibration laboratory. The calibration of the eXacal precision thermometers is done at ITS-90 temperature fixed points in the range from the argon triple point to the silver freezing point with excellent measurement uncertainties. Alternatively, the eXacal thermometers can also be calibrated using the comparison method.



eXacal technology

The eXacal precision thermometers have been developed from scratch. Each component has been designed with the greatest care and perfectly matched to the others. A central highlight is the innovative handle, which serves as the central technology carrier. Thanks to its modular design, it allows combinations of the eXacal thermometers in many different ways.




Quality meets service:
Thermometers with an all-round carefree package


Our offering not only includes the sale of thermometers, but also a comprehensive service. If one of our thermometers should ever be defective, you can have it repaired in our in-house thermometer manufactory. We therefore offer you an overall package and not just product sales.

Our many years of expertise are based on more than 20 years of practical experience in the calibration of precision thermometers at fixed temperature points in our calibration laboratory. Our customers benefit from this extensive experience and can be assured that their thermometers always meet the highest standards.




Benefits of our thermometers




  • Highest precision and quality: Our thermometers are characterised by their precision and quality. We achieve this through careful manual work and many years of experience in our manufactory – so that you can rely on accurate measurement results.
  • Complete range of services: We don’t just offer the sale of thermometers. Our service also includes calibrations in accordance with DAkkS (DIN EN ISO/IEC 17025) and repairs in our thermometer factory. You therefore have a reliable point of contact for all your thermometer needs.
  • Traceability: With calibrations from our DAkkS laboratory, our thermometers are traceable to international standards in accordance with DIN IEC 17025.
  • Flexible customisation: We offer tailor-made solutions for your requirements. Whether special designs or special thermometer requirements – we can realise them.



  • Wide product range: You can choose from a wide range of products. Whether you need high-precision temperature measurements in industry, research or other applications, we have the right solution for you.
  • Customer advice: Our experts are on hand with their expertise to help you choose the right thermometer and answer any questions you may have about temperature calibration. We always make every effort to offer you the best possible advice.
  • Trusted partner: With a long history in temperature measurement and calibration, we are a trusted partner for companies, research organisations and laboratories worldwide. You can count on our reliability and commitment to the highest quality.