Temperature Converter for Precision Results

Thermo Electric Instrumentation introduces a browser-based tool for converting thermocouple millivolts to temperature with laboratory-grade precision. The tool embodies ISO 17025-accredited laboratory expertise and is digitized for direct use in the field or lab, eliminating the need for laminated lookup tables or mental approximations.

Key differentiators include:

• 1. Real math using the NIST ITS-90 polynomials The converter uses full ITS-90 9th-order polynomials to curve-fit sensor voltage across the entire range, from -200°C to 1,500°C, ensuring accuracy beyond linear approximations.
• 2. Cold junction compensation (CJC) The tool accounts for the reference junction temperature by allowing input of ambient temperature, delivering corrected results equivalent to high-end panel meters.
• 3. Bidirectional capability In Source Mode, you can specify a target temperature and determine the exact millivolts to inject with a process calibrator. An iterative Newton-Raphson solver ensures convergence and accuracy in both directions.

Built on nearly six decades of experience in temperature sensing, Thermo Electric Instrumentation designs solutions for demanding applications—from petrochemical reactors to aerospace engines—and applies that standard to its digital calculation tools.

Ready to upgrade your toolkit? The Temperature to mV converter brings laboratory-grade conversion directly in your browser, removing the need for manual calculations and potential errors in field measurements.