Development of a fast fiber-optic two-color pyrometer for the temperature measurement of surfaces with varying emissivities
- 1 August 2001
- journal article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 72 (8), 3366-3374
- https://doi.org/10.1063/1.1384448
Abstract
A two-color pyrometer has been developed to measure the temperature of surfaces with unknown emissivities during high speed turning processes. Quartz fibers enable measurements at locations with limited optical access. The sensitivity of the pyrometer has to be high enough to measuretemperatures down to 300 °C of an aluminum alloy with an emissivity as low as 0.2. The accuracy of the two-color pyrometer has been compared with the accuracy of monochromatic pyrometers for different metallic surfaces. The different arguments for the choice of the two pyrometer wavelengths 1.7 and 2.0 μm are explained. The influences of the surfaceemissivities, the digitization, and the noise on the absolute and relative measurement error have been determined. Fast amplifiers and data acquisition allow a maximum time resolution of a few microseconds and a local resolution of ∼0.5 mm2. Some test measurements of an aluminum alloy surface are presented.Keywords
This publication has 12 references indexed in Scilit:
- Pyrometric temperature measurement method and apparatus for measuring particle temperatures in hot furnaces: Application to reacting black liquorReview of Scientific Instruments, 1996
- Nanosecond-time-resolution thermal emission measurement during pulsed excimer-laser interaction with materialsApplied Physics A, 1996
- Simultaneous measurement of droplet velocity and size and flame mantle temperature by phase Doppler anemometry and two-colour pyrometryMeasurement Science and Technology, 1995
- High-speed spatial scanning pyrometerReview of Scientific Instruments, 1993
- Development of multicolor pyrometers to monitor the transient response of burning carbonaceous particlesReview of Scientific Instruments, 1992
- Two-colour pyrometer measurement of the temperature of individual combusting particlesJournal of Physics E: Scientific Instruments, 1985
- Multi-Wavelength PyrometryMetrologia, 1981
- Wavelength Specification in Optical and Photoelectric PyrometryMetrologia, 1977
- Temperature measurement of particulate surfacesJournal of Physics E: Scientific Instruments, 1970
- The Effective Wave-Length of Transmission of Red Pyrometer Glasses and Other Notes on Optical PyrometryThe Astrophysical Journal, 1915