The Level 2 course is designed to increase the knowledge of the Level 1 thermographer to the end that challenges suck as active infrared applications may be met. The course looks at infrared radiation from a quantitative view to help determine the monetary value of remedial action taken as a result of the thermographic findings. It meets or exceeds the recommended training requirements of ASNT-TC-1A for Level II Thermal/Infrared Certification. The course is a good mixture of audio, visual and kinetic presentation material to help enable all types of learners to benefit from the material presented.


  • General overview of the use of Infrared Thermography
  • Course logistics and curriculum outline
  • Trainer and student introductions
  • Understanding Certification and Requirements

Intermediate Thermal/Infrared Physics

Matter, Energy, Heat and Temperature

  • Basic atomic structure
    • States of matter
    • Bonding of molecules
  • Forms of energy
    • Definitions and basic explanation
    • The Kinetic Molecular Theory

Three Modes of Heat Transfer

  • Conduction
    • Fourier's law: concepts & calculations
    • Thermal resistance
    • Transient conduction: concepts & calculations
  • Convection
    • Newton's Law of Cooling
    • Concepts & calculations
    • Real world applications
  • Radiation
    • Stephan-Boltzman formula
    • Concepts & calculations
    • Real world applications
    • Dollars and cents calculations of remedial action

The Infrared Spectrum

  • Planks Law/Curves
  • Spectral Emittance of Real Surfaces
  • Semitransparent Windows and Filters

Radiosity Principles

  • Blackbodies - theory/concepts
  • Emissivity concept sections
    • Specular and Diffuse Emitters
    • Lambertian Emitter - Angular Sensitivity - Effects of emittance errors
    • Emissitivity Calculations
  • Reflections Concepts
    • Quantifying effects of reflection
    • Theoretical Corrections
  • Transmittance Concepts
    • Quantifying partial transmittance
    • Theoretical corrections

Resolution Test & Calculations

    • Measurements & Calculations
  • SRF (Square Response Function Test)
  • Resolution vs. Lens and Distance

Level II Thermal/Infrared Operations

Infrared Measurement Quantification

  • Simple measurements
  • Performance of Emissivity testing
  • Temperature profiles
  • Producing and recording accurate images

Special Equipment for "Active" Technique

  • Hot or cold fluid energy sources
  • Heat lamp/flash lamp/laser energy sources
  • Reports and documentation

Level II Thermal/Infrared Applications

  • Temperature Measurement Applications
  • Energy Loss Applications
  • Mass-transfer heat exchange concepts
    • (Air or other flows into or out of a system)
  • Active Applications Filtered Applications
  • Imaging a rapidly moving process