Hello.
I am looking for research papers (or book chapters) where the equation for the Seebeck Coefficient of K-Type Thermocouple, and if possible Seebeck coefficients of chromel and alumel are given. Multiple references are welcome and would be appreciated. Please don't cite references or cross-references where ONLY plots are given. I need either (experimental) data points or the equation (from experimental data) only.
Here I am Providing the equation in general a polynomial fit with coefficients and Table.
Thank you Sir for the prompt reply. However, I don't want the Thermoelectric Voltages of the thermocouple, I need Seebeck coefficient directly (or the equation for that). For Thermoelectric voltages, the most authentic source (which I follow) is the ITS-90 tables. These tables just convert temperature value to voltages, and vice versa.
Most (almost all ?) commercial instruments (digital multimeters) read these thermoelectric voltages across the "temperature" channel (channel configured to measure temperature of sample), and add the reference (CJC or simulated) thermoelectric voltage for that channel, and finally convert it back to the actual temperature using the inverse thermoelectric voltage equations. This temperature is what is finally displayed in the front panel.
To know what exactly I want, please refer to the Figure 6. in the following link. https://www.msm.cam.ac.uk/utc/thermocouple/pages/ThermocouplesOperatingPrinciples.html
Thanks again for your help.
Regards.
Dear Prof. Klyndyuk, Thanks for the reply. However as I said, I don't want the Thermoelectric Voltages of the thermocouple, I need Seebeck coefficient directly (or the equation for that). For Thermoelectric voltages, the most authentic source (which I follow) is the ITS-90 tables (from NIST). These tables just convert temperature value to voltages, and vice versa.
Finally I have figured it out. Using the thermoelectric equations, I converted it to "difference equations". Seebeck coefficient is the slope of that thermoelectric voltage vs temperature plot. Wrote a MATLAB function which does this, and it works. :-)
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