Design and investigation of electronic unit of a pyrometer for measuring flux fadiation of solid particles in a two-phase flow
Journal Title: Вісник Житомирського державного технологічного університету. Серія: Технічні науки - Year 2018, Vol 81, Issue 1
Abstract
The work offers the improvement of oxygen monitoring instrument of a gas torch with the use of a simple tool base which does not demand a high level of qualification of operator. An electronic block of pyrometer was developed and investigated. The pyrometer is designed to measure flow of solid particles in a high-temperature two-phase flow. The operating range of spectrum is 0,5•10-6 ... 1,1•10-6 m. The justification of choice of radiation receiver was carried out and calculation of electrical signal at radiation receiver was performed. The radiation receiver is a photodiode FD-25K, which is selective, of little inertia, has small dimensions, operates at a small voltage of power source. The spectral range measuring flux of radiation flame is limited by spectral sensitivity of radiation receiver (wavelength 0,5•10-6 ... 1,1•10-6 m). The signal amplifier is designed. The signal amplifier is a converter of an electric current of a photodiode into a voltage. The photodiode is switched on in photovoltaic mode (without bias voltage), which ensures the absence of dark current. The calculation and experimental values of the parameters of the electronic unit of the measuring device are presented in the article.
Authors and Affiliations
V. M. Nochvai
Keywords
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