Description
Features of Secondary SPRT Model 217:
Temperature range: With an operating range from -100 °C to 430 °C, our Secondary SPRT Reference Thermometer Model 217 covers a medium temperature range for common applications. This makes it a versatile solution for a wide variety of measurement requirements.
Low measurement uncertainties: The precision of the thermometer is emphasized by its low measurement uncertainties of only 2.5 mK to 8.5 mK for a DAkkS-accredited calibration according to DIN EN ISO/IEC 17025. This high level of accuracy ensures reliable results in all areas of application.
Robustness: As a robust alternative to highly sensitive SPRTs with quartz sheaths, our Secondary SPRT Reference Thermometer is characterized by its metal sheath and stable measuring resistors. It is therefore ideal for long-term use.
New SPRT sensor: The SPRT temperature sensor newly developed by Klasmeier has been improved in the following areas:
- fast response time
- low hysteresis
- low self-heating
- excellent reproducibility and stability
Temperature sensors from our own manufacture
Every temperature sensor of the eXacal 230 Standard Platinum Resistance Thermometer (SPRT) is manufactured with the utmost care and precision in our in-house factory in Fulda. The development and production of our own measuring resistors guarantees the highest quality and reliability.
Why Klasmeier manufacturing?
• Craftsmanship precision: Our SPRTs are manufactured by experienced experts who carefully monitor every detail.
• Individual solutions: We can respond to specific requirements and produce customized sensors for your application.
• Quality control: Every sensor undergoes strict testing procedures to ensure that it meets the high requirements of the International Temperature Scale of 1990 (ITS-90).
By manufacturing in our own factory, we have full control over the entire production process – from the selection of materials to the final accredited calibration. The result: a product that meets the highest demands in measurement technology.
DAkkS-certified calibration of secondary SPRTs
In our in-house DAkkS-accredited calibration laboratory, we offer high-precision calibration services for SPRTs. Our accreditation guarantees that every calibration is performed according to the internationally recognized standards of DIN EN ISO/IEC 17025. This ensures seamless traceability to national and international standards.
| Range | Temperature fixed points | Measurement uncertainty |
| -38.8344 °C – 0.01 °C | Mercury to water | 3.5 mK |
| 0.01 °C – 29.7646 °C | Water to gallium | 3.5 mK |
| 0.01 °C – 156.5985 °C | Water to indium | 6 mK |
| 0.01 °C – 231.928 °C | Water to tin | 8.5 mK |
| 0.01 °C – 419.527 °C | Water to zinc | 12 mK |
What makes our calibration special?
Traceability: Through our DAkkS accreditation, every calibration is directly linked to national and international standards. This gives you the certainty that your measurement results are recognized worldwide.
Measurement uncertainty: The accuracy of our calibration is based on a careful evaluation of all uncertainty components, including the reproducibility of the thermometer, the ITS-90 deviation function, self-heating, and the hysteresis of the sensor.
Application range: With the detailed information from the calibration certificate, you can use your secondary SPRT in the temperature range from -38.8344 °C to 419.527 °C with full confidence.
Learn more about our calibration laboratory:
