Technical Archives.
The theory and the basic tools you need to learn the fundamentals of temperature measurement — the technical information Thermo Electric has always shared to help customers meet their measurement and control requirements.
The Fundamentals
Reference material on the theory and tools of temperature measurement
Each section below collects the theory, diagrams, reference data and selection tools behind accurate temperature measurement and control. Browse a section to explore its pages.
Browse the Archives
Seven reference sections, from sensor theory to conversion tables
Thermocouples
Basic concept, calibration tolerances, standard types, lead wires, series & parallel measurement, noise interference and color codes.
View sectionResistance Temperature Detectors
RTD theory, wiring diagrams, reference data (130 / 140 / 150) and lead-wire fundamentals.
View sectionThermowells
Metallic and ceramic protection tubes, selection guides, protective coatings, pipe sizes, NPT dimensions and flanged thermowells.
View sectionReference Tables
Thermocouple temperature / mV tables, RTD temperature tables and temperature-conversion charts.
View sectionHazardous Area
Classified hazardous-area fundamentals to guide safe sensor selection and installation.
View sectionNEMA / IP Ratings
Enclosure protection ratings and the equivalence between NEMA and IP classifications.
View sectionGlossary
A reference glossary of temperature-measurement terms and definitions.
View sectionLooking for product drawings and specs?
Explore the Designer's Guide for sensor construction and configuration details, or reach out and our team will help.