The transient regime of a multiwavelength pyrometer |
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Authors: | P. Coppa Dai Jinmin G. Ruffino |
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Affiliation: | (1) Department of Mechanical Engineering, University of Rome Tor Vergata, Via della Ricerca Scientifica, 00133 Rome, Italy;(2) Department of Precise Instruments, Harbin Institute of Technology, Harbin, China |
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Abstract: | The transient operation of a new multiwavelength pyrometer based on a dispersing prism and a Si photodiode array is presented. After calibration, transient tests were performed using a tungsten strip lamp, supplied by a current pulse of 0.3-s duration. Measurements were carried out with a data acquisition system consisting of a FET multiplexer, a DVM (14 bit, 100 kHz), and a buffer memory (64 kbytes). Pyrometer signals are processed off-line, and temperature vs time is displayed. With the present arrangement, temperature measurements at 20 wavelengths may be performed with 200s resolution. Faster measurements are possible with a reduced number of channels.Paper presented at the Third Workshop on Subsecond Thermophysics, September 17–18, 1992, Graz, Austria.Deceased |
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Keywords: | high-speed measurements multiwavelength pyrometry transient temperature measurements |
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