Short-Wavelength (SW) Pyrometer
Williamson places a strong emphasis on short-wavelength single-wavelength pyrometers because of their ability to better tolerate emissivity variation and optical obstruction.
- Short-wavelength sensors are often 4-20 times less sensitive to emissivity variation compared to long-wavelength sensors
- By selecting the correct wavelength span, Williamson pyrometers make it possible to view through water, steam, flames, combustion gases, and plasmas.
As a result, Williamson short-wavelength pyrometers provide superior performance over a wide range of real-world operating conditions. For most applications, selecting the shortest practical wavelength is recommended. As indicated in the chart, shorter wavelengths result in smaller errors and are 4-20 times less sensitive to emissivity variation compared to long-wavelength sensors.
Short-Wavelengths Can View Through Optical Obstructions Wavelength selection is a critical factor in Williamson’s short-wavelength technology. By choosing the correct wavelength span, you can view through water, steam, flames, combustion gases, plasmas and other common industrial interferences.