Resistance & EMF Reference Data
Engineering-grade tables that translate between physical temperature and sensor output — resistance for RTDs and millivolt EMF for thermocouples. Values referenced to NIST ITS-90 and IEC 60751.
PT100 Resistance Temperature Tables
Complete PT100 resistance-vs-temperature table from -200°C to +850°C in 10°C increments, with Class A and Class B tolerances and the Callendar-Van Dusen equation.
Open table Thermocouples · ITS-90Thermocouple EMF Reference Tables
EMF reference tables for all eight standardized thermocouple types — B, E, J, K, N, R, S, and T — referenced to a 0°C cold junction per IEC 60584 and NIST ITS-90.
Browse types Type K · NISTType K Thermocouple Chart
Full Chromel-Alumel EMF reference from -270°C to +1372°C with Class 1 and Class 2 tolerances, sensitivity, and cold-junction compensation notes.
View chart Other TypesTypes B, E, J, N, R, S, T
Cross-reference page covering noble metal types (R/S/B) and base metal types (E/J/N/T) — including composition, sensitivity, and recommended temperature ranges.
See comparisonChoose the Right Sensor
Decision frameworks for the most common sensor specification questions — sensor technology, sheath material, wire insulation, and lead-wire configuration.
RTD vs Thermocouple
Side-by-side comparison of accuracy, temperature range, response time, cost, and stability — with an application-driven decision flow for picking the right technology.
Compare technologies MaterialsSheath Material Selection
Detailed reference for 304/316/321 stainless, Inconel 600/625, Hastelloy C-276, tantalum, platinum, and alumina ceramic — with maximum temperature and corrosion guidance.
Read guide WireWire Insulation Selection
PVC, PFA, FEP, Kapton, fiberglass, ceramic fiber, silicone, and polyimide insulations compared — with AWG sizing and ANSI MC96.1 color-code reference.
View optionsApplication Notes & Practical Guidance
Working notes from our applications engineering team on real-world sensor specification, installation, and signal-conditioning challenges.
Sheath Materials for Corrosive Environments
How to select a sheath alloy that survives your process media — covering chloride stress cracking, sulfidation, halogen attack, and noble metal alternatives.
Read article ArticleThermocouple Extension Wire & Color Codes
Understanding the difference between thermocouple-grade and extension-grade wire, ANSI MC96.1 color coding, and the cumulative error of mismatched junctions.
Read article ArticleWhen to Choose an RTD Over a Thermocouple
Five practical questions that determine whether the precision and stability of an RTD are worth the cost and range trade-offs against a thermocouple.
Read articleReference Standards We Follow
Every sensor we ship is traceable to a primary standard. Our calibration laboratory maintains an unbroken chain to NIST and operates in compliance with the international standards listed below.
NIST Traceability
Our calibration baths and reference probes are calibrated by laboratories holding direct or secondary traceability to the National Institute of Standards and Technology (NIST). Every certificate includes the chain of standards and measurement uncertainty (k=2).
ITS-90 Temperature Scale
The International Temperature Scale of 1990 (ITS-90) defines the temperature scale via fixed points — argon triple point (-189.3442°C), water triple point (0.01°C), silver freezing point (961.78°C) — and is the basis of every reference table on this site.
IEC 60751 (RTDs)
The international standard for industrial platinum resistance thermometers (PRTs). Defines the 0.00385 Ω/Ω/°C temperature coefficient, Class A and Class B tolerance bands, and the Callendar-Van Dusen equation we use for all PT100 resistance computations.
ASTM E230
ASTM E230/E230M-17 — Standard Specification for Temperature-Electromotive Force (EMF) Tables for Standardized Thermocouples. Defines the U.S. consensus values for types B, E, J, K, N, R, S, and T used in every Thermometrics product and every chart on this site.
IEC 60584 (Thermocouples)
International thermocouple standard governing EMF-temperature relationships, tolerance Classes 1, 2, and 3, and physical color coding. Our reference tables are harmonized with both IEC 60584 and ASTM E230 — values agree to better than ±0.5°C across the standard ranges.
AS9100D & ISO 9001:2015
Our aerospace and general quality management systems are independently audited and certified. All resource pages on this site reflect the test methods and measurement principles documented in our quality manual revision 11.
CAD Files, Datasheets & Specifications
Engineering drawings, 3D STEP models, and detailed datasheets for every standard catalog product are available on request. We do not publish bulk CAD files publicly — instead, our applications team prepares files matched to your part number, options, and revision.
Typical files we can supply on request:
- 2D dimensional drawings (PDF, DWG, DXF)
- 3D solid models (STEP / STP, IGES)
- Product datasheets and specification sheets
- Material certifications (mill test reports, ASTM compliance)
- Calibration certificates (NIST-traceable, with as-found and as-left data)
- First Article Inspection Reports (AS9102 Forms 1, 2, 3)
- RoHS / REACH / Conflict Minerals declarations
Request Engineering Documents
Email engineering@thermometricscorp.com with your part number (or proposed configuration) and the documents you need. Standard requests are returned within one business day.
Need a Custom Drawing?
Our applications engineering group can produce dimensioned drawings for any custom assembly — sheath length, immersion depth, connector style, transition fitting, lead wire length. Learn about custom sensor design →
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Whether you need a standard catalog configuration or a fully custom engineered assembly, our technical team responds to all quote requests within one business day.