# High Temperature Dry Block Calibrator The Kaye HTR-420 calibrates up to 48 thermocouples from 30°C to 420°C and is the most advanced high [temperature dry block calibrator](https://www.kayeinstruments.com/en/calibration-references/the-htr-and-ltr-series/htr-420) specifically designed to address the capacity and flexibility needed for thermal validation. The Kaye HTR-420 is the most advanced high temperature calibrator specifically designed to address the capacity and flexibility needs for thermal validation. The high [temperature dry block calibrator](https://www.kayeinstruments.com/en/calibration-references/the-htr-and-ltr-series/htr-420) HTR-420 can calibrate 48 thermocouples at one time and saves hours of time and effort when calibrating or verifying validation sensors. The new Dry Block Temperature Calibrator is backward compatible with the Validator 2000, Validator AVS, ValProbe or RF ValProbe software for automatic sensor calibration or can be used stand-alone via it’s easy to use touch screen display. Due to its use as a high [temperature dry block calibrator](https://www.kayeinstruments.com/en/calibration-references/the-htr-and-ltr-series/htr-420), readings are accurate from 30˚C up to 420˚C with temperature stability up to 0.01˚C. The new Thermocouple Fixture guarantees easy handling of up to 48 TC’s ensuring that all are securely held at full immersion depth. Request a live demo of the high [temperature dry block calibrator](https://www.kayeinstruments.com/en/calibration-references/the-htr-and-ltr-series/htr-420) HTR-420 to see how much of an asset this can be to your lab. The Kaye HTR-420 is the most advanced high temperature calibrator specifically designed to address the capacity and flexibility needs for thermal validation. Click here to know more about [Temperature Dry Block Calibrator](https://www.kayeinstruments.com/en/calibration-references/the-htr-and-ltr-series/htr-420). --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://noah-smith.gitbook.io/kaye/high-temperature-dry-block-calibrator.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.