Calibration of a scanning pyrometer for use in high-speed studies of thermal processes.

摘要

In many thermal processing applications, the implementation of non-contact temperature measurement is highly desirable. A variety of devices that accomplish this task with a high degree of accuracy are commercially available. However, these devices typically possess shortcomings in the areas of scan-rate, spatial resolution, and the ability to observe bodies radiating over large spectral bandpasses. This work details the efforts to implement two separate high-speed imaging systems, the Kodak HS 4540 Motion Analyzer and the Phantom V7.0 camera, as broad-band, high-speed scanning pyrometers. A variety of studies were conducted to determine the device specific characteristics necessary to implement these devices as such. Most notably, theoretical and experimental effective wavelengths were calculated. The Kodak HS 4540 was found to work at a wavelength of 1012 nm compared to the theoretical value of 806 nm. The red, green, and blue color filters of the Phantom V7.0 were found to work at wavelengths of 918, 855, and 791 nm, compared to theoretical values of 905, 776, and 755 nm, respectively.