DOI 10.17586/0021-3454-2017-60-7-672-678
UDC 535.324.2
PRODUCTION TESTING OF REFRACTOMETRIC DEVICE FOR CONTROL OVER LIQUID-PHASE MEDIA
ITMO University, Saint Petersburg, 197101, Russian Federation; Professor
E. E. Majorov
Saint-Petersburg state university of aerospace instrumentation; Associate professor
G. A. Tsygankova
Naval Polytechnic Institute, Department of Physics; PhD
A. L. Fedorov
Naval Polytechnic Institute, Department of Physics; Associate Professor
T. V. Zharkova
Mikhailovskaya Artillery Military Academy, Department of Mathematical, Natural-Scientific, and General Professional Disciplines; Associate Professor
A. V. Dagaev
Ivangorod Humanitarian and Technical Institute, Branch of St. Petersburg State University of Aerospace Instrumentation, Department of Mathematics, Informatics and Information Customs Technologies; Associate Professor
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Abstract. Results of field tests of a refractometric instrument designed to measure characteristics of liquidphase media, in particular food products, are presented. The developed device meets the requirements of production control and surpasses foreign analogues in technical and operational characteristics. The structural-functional diagram of the instrument is described, and its technical and operational parameters are discussed. The results of liquid-phase solid residual concentration measurements of by the Brix scale of the refractometer are compared with standard laboratory test; convergence of the results is found to be not worse than ±0,3 %.
Keywords: refractometer, sapphire, refractive index, reference point, solid residue
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