This is a review of high-frequency methods for measuring and controlling the humidity of various materials. The moisture of cotton seeds is a major factor affecting their qualitative and quantitative characteristics in technologies for their storage, transport, and processing. Thus, direct humidity measurements of cotton seeds during processing is an important problem. A mathematical model of a high-frequency hygrometer for cotton seeds is constructed in which the test material is represented as a complicated dielectric in an electric field. A substitution circuit containing a capacitance between electrodes is proposed, along with capacitances and resistances corresponding to different forms of polarization. Four variants of the substitution circuit are examined which approximately describe the dependence of the tangent of the dielectric loss angle on the frequency of the electromagnetic field. It is shown that the simplest parallel two-component RC substitution circuit corresponds most closely to the actual object of measurement at frequencies of 105–108 Hz.
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References
B. R. Ivanov, V. G. Lisichkin, and S. N. Shvedov, “Two-parameter device for monitoring humidity,” Izv. OrelGTU, No. 6/278(577), 84–88 (2009).
V. V. Pekler, “Measurement of the moisture content of friable materials: state and prospects for development,” Metody Ots. Sootv., No. 9, 15–17 (2009).
V. G. Lisichkin, “Two-parameter device for monitoring humidity with reduced energy demand,” Priborostr. Biotekhn. Sist., No. 1 (285), 34–140 (2011).
P. I. Kalandarov, Sh. M. Masharipov, B. P. Iskandarov, and B. M. Khaitov, “Design of capacitive primary measurement transducers for moisture,” Mat. Progr. Obesp. Prom. Sots. Sfer., No. 1 (3), 62–69 (2013).
B. P. Iskandarov and P. I. Kalandarov, “Radio frequency device for monitoring moisture of a margarine mass based on capacitive transducers,” Aprobatsiya, No. 6 (9), 8–13 (2013).
V. P. Borisov, M. A. Beryozin, V. S. Kuznetsov, and V. S Borisov, Elements of the Measurement of the Major Technological Parameters of Food Production, Mordoviya-Ekspo, Saransk (2011).
I. B. Shirokov and I. I. Maronchuk, “Instruments used for determining the water content in oil and petroleum products (a review),” Energ. Ustan. Tekhnol., 4, No. 1, 56–73 (2018).
G. A. Bibik, Patent No. 2653091C1 RF, Izobret. Polezn. Modeli, No. 13 (2018).
Kh. A. Usmanova and A. Turgunbaev, “Theoretical foundations of the dielecometric method for humidity measurement,” Pribory, No. 8, 34–40 (2017).
W. Burubai, J. Food Proc. & Technol., 5, 290 (2014), https://doi.org/https://doi.org/10.4172/2157-7110.1000290.
F. E. Groves and F. M. Bourland, J. Cotton Sci., 14, 74–81 (2010).
A. G. Bolotov, T. A. Karas, A. A. Levin, et al., “Measurement of soil humidity by frequency dielcometry,” Vest. Altay. Gos. Agrar. Univ., No. 12 (110), 36–39 (2013).
Yu. I. Blokhin, I. P. Anan’ev, and V. S. Zubets, “Study of frequency-moisture dielectric characteristics of feed grasses using a precision impedance measurement device,” Mekhaniz. Elektrif. Selsk. Khoz., No. 1, 64–74 (2016).
N. A. Kochetov, A. S. Rogachyov, A. N. Yemelyanov, et al., “Microstructure of heterogeneous mixtures for gas-free combustion,” Fiz. Goren. Vzryva, 40, No. 5, 74–81 (2004).
I. Yu. Polyakov, A. N. Klimenkov, D. D. Zikov, et al., “Current state of data transmission problems in heterogeneous communication systems,” Dokl. TUSURa, 20, No. 3, 177–180 (2017).
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Translated from Metrologiya, No. 3, pp. 53–70, July–September, 2020.
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Nasirov, T.Z., Ismatullayev, P.R. & Jabborov, H.S. Mathematical Model of a High-Frequency Hygrometer for Cotton Seeds Based on Substitution Circuits. Meas Tech 63, 758–764 (2020). https://doi.org/10.1007/s11018-021-01851-2
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DOI: https://doi.org/10.1007/s11018-021-01851-2