# **Temperature Standard Probe - Temperature Reference Standard** Highly accurate traceable [temperature reference standard](https://www.kayeinstruments.com/en/calibration-references/the-htr-and-ltr-series-3/kaye-irtd-400-intelligent-rtd-secondary-standard) for calibrating sensors from -196 to 420C with an accuracy of +/- 0.025, the IRTD temperature standard probe provides a 4 to 1 ratio for calibrating sensors to 0.100C. Easy to read data with the Kaye IRTDWin software. ## **Kaye IRTD-400** The IRTD is a high accuracy traceable [temperature standard probe](https://www.kayeinstruments.com/en/calibration-references/the-htr-and-ltr-series-3/kaye-irtd-400-intelligent-rtd-secondary-standard) used as part of the Kaye Validation systems for calibrating sensors. During sensor calibration / verifications, sensors are compared against the IRTD and offsets are automatically calculated and stored. The broad temperature range from -196 to 420C, enables it to be used in virtually all temperaturevalidation applications. ## **[Temperature Reference Standard](https://www.kayeinstruments.com/en/calibration-references/the-htr-and-ltr-series-3/kaye-irtd-400-intelligent-rtd-secondary-standard)** The IRTD is an integral part of Kaye's automated sensor calibration system and communicates directly with all Kaye Validation systems. With an accuracy of +/- 0.025, the IRTD [temperature standard probe](https://www.kayeinstruments.com/en/calibration-references/the-htr-and-ltr-series-3/kaye-irtd-400-intelligent-rtd-secondary-standard) provides a 4 to 1 ratio for calibrating sensors to 0.100C.With this accuracy this temperature reference standard is one of the most accurate industrial temperature reference standards in the market. The [temperature reference standard](https://www.kayeinstruments.com/en/calibration-references/the-htr-and-ltr-series-3/kaye-irtd-400-intelligent-rtd-secondary-standard) probe can be used for confirming the accuracy of other temperature devices. For this purpose, Kaye has developed IRTDWin software. The IRTDWin software is one convenient interface screen lets you track probe stability, numerically and graphically, and confirm system accuracy. See real time data of your IRTD using the calibration interface and the Kaye IRTD Console software. The calibration interface connects directly to your computer using USB and to up to two IRTDs. The software immediate shows the temperature of the IRTDs with an accurate resolution to the thousandths degree. The interface is simple, easy to use, and does not need a power source, as it is powered by the computer. Click here to know more about [Temperature standard probe](https://www.kayeinstruments.com/en/calibration-references/the-htr-and-ltr-series-3/kaye-irtd-400-intelligent-rtd-secondary-standard).