Choosing the correct infrared wavelength
Accurate tube wall temperature measurement is critical for maintaining furnace efficiency, optimising product yield, extending tube life, and protecting asset integrity.
NIR-b (1 µm) and MWIR-b (3.9 µm) wavelengths behave very differently in fired environments. Factors such as background radiation, flame interference, emissivity variation and viewing geometry all influence which wavelength will deliver the most accurate and stable readings.
Practical guidance from LAND’s engineers
Our engineering experts have developed a comprehensive application note that explains how measurement method, furnace conditions and wavelength selection interact, helping you make informed decisions for more precise, repeatable tube wall temperature measurement.
