FieldengInstrumentation & Controls
Thermocouple Temperature
NIST ITS-90 inverse polynomials with cold-junction compensation. Types K, J, T, E, N, R, S.
Instrumentation & ControlsThermal & HVAC
NIST ITS-90 inverse polynomials with cold-junction compensation. Types K, J, T, E, N, R, S.
App id: INST-25. Reference version 1.0.
How to fill it
Fill the inputs. The tool shows the outputs.
On the tool screen, Calc is the working sheet. Presets stores values you reuse. Reference is the formula, assumptions, and provenance below.
Formula
E(T_hot) = E_measured + E(T_cold); T_hot from ITS-90 inverseInputs
| Name | Unit |
|---|---|
| Type (0=K, 1=J, 2=T, 3=E, 4=N, 5=R, 6=S) | 1 |
| Measured EMF (camera) | mV |
| Cold-junction temperature (optional) | C |
Outputs
| Name | Unit |
|---|---|
| Hot-junction temperature (hero result) | C |
| Compensated EMF | mV |
Diagnose
This tool does not attach diagnose observations.
Assumptions
- Leave cold junction blank for 0 °C. Voltage outside a type’s tabulated range is still inverted, not clamped.
Provenance
- NIST ITS-90 inverse thermocouple polynomials. INST-26 is this same CJC path — not a second tool.