RUDN Journal of Engineering ResearchRUDN Journal of Engineering Research2312-81432312-8151Peoples’ Friendship University of Russia named after Patrice Lumumba (RUDN University)2267310.22363/2312-8143-2019-20-2-147-154Research ArticleAcoustic flow meter performance assurance outside the limits of measurementLapinMikhail V.<p>2nd year master’s student at the Department of Mechanical and Instrumental Engineering, Academy of Engineering</p>alo14@yandex.ruGrininAndrey O.<p>2nd year master’s student at the Department of Mechanical and Instrumental Engineering, Academy of Engineering.</p>alo14@yandex.ruShkarinKirill V.<p>assistant at the Department of Mechanical and Instrumental Engineering, Academy of Engineering.</p>alo14@yandex.ruSouryKambiz<p>assistant at the Department of Mechanical and Instrumental Engineering, Academy of Engineering</p>alo14@yandex.ruPeoples’ Friendship University of Russia (RUDN University)1512201920214715415012020Copyright © 2019, Lapin M.V., Grinin A.O., Shkarin K.V., Soury K.2019<p>Article is dedicated to liquid flow measuring by acoustic flow meters. Manufacturers establish the allowable measurement range (nominal), within which the measurement error is minimal, thats why their measuring span is limited, and the measurement error when operating in off-design modes is unacceptable. The basic task of this research is to expand the range of flow measurements of acoustic liquid meters. V.A. Fafurin and M.K. Galeev in their work Calculation of the correction coefficient of the ultrasonic flow meter have already considered the problem of measuring the flow rate of acoustic devices. In their study was presented a method for calculating the correction coefficient, which depended on the flow regime in the pipe. But this technology is applicable for change-less flow regime pipes. In this article, the authors propose to use a coefficient that has a functional dependence on the magnitude of the flow, obtained empirically. The article describes the stages of the study: the method of calibration of the device, methods of analysis and processing of verification data by PC, the algorithm of measurement system implementation in power engineering equipment, system performance check. The system presented in the article allows to expand the range. The proposed model will be useful for enterprises.</p>acoustic flow metermeasuring accuracyoutside of design conditionsmeasuring span enhancementакустический расходомерпогрешность приборанерасчетный режимрасширение диапазона измерений[Ultrasonic flow meters. http://npopramen.ru/][Digulescu A, Petrut T, Candel I, Bunea F, Dunca G, Bucur D, Ioana C, Serbanescu A. On the vortex parameter estimation using wide band signals in active acoustic systems. IEEE Oceans Conference, Taipei, 2014. Available from: doi: 10.1109/OCEANS-TAIPEI.2014.6964552.][Zhang L, Meng T, Wang C, Hu HM, Qin CL. Probe installation effects on the accuracy of feed thru ultrasonic flowmeters. Chinese Journal of Scientific Instrument. 2012;33(10): 2307–2314.][Zheng D, Zhang P, Xu T. Effect of installation position of ultrasonic flowmeter probe on flow measurement. Journal of Mechanical Engineering. 2011;47(12): 13–18.][Kremlevskiy PP. Raskhodomery i schyotchiki kolichestva veschestv: spravochnik: kn. 2. 4-e izd. [Flowmeters and counters of substances: directory: book 2. 4th ed]. Leningrad: Mashinostroenie Publ., Leningradskoe otdelenie; 1989. (In Russ.)][Са2.833.021 RE. Schyotchik akusticheskij AC-001: rukovodstvo po ekspluatacii [Acoustic meter АС-001: manual]. p. 10. Available from: http://www.staroruspribor.ru/ files/catalog/gallery/700/782/17.pdf. (In Russ.)][Zhang P-Y, Zheng D-D, Xu T-S, Zhang L-X, Hu H-M. Study on the influence of ultrasonic probes on flow field and measurement performance of ultrasonic flowmeter. Journal of Experiments in Fluid Mechanics. 2011;25(3): 60–65.][Fafurin VА, Galeev МК. Raschet korrektiruyuschcego koefficienta ultrazvukovogo raskhodomera [Calculation of the correction coefficient of the ultrasonic flow meter]. Vestnik Kazanskogo technologicheskogo universiteta. 2011;(23): 152–156. (In Russ.)][Birger GI. Nekotorye voprosy graduirovki ultrazvukovykh raskhodomerov [Questions on graduation of ultrasonic flow meters]. Measuring equipment. 1962;(10): 53–55. (In Russ.)][ZTMS.05000-01 34 RO. SCADA ZETView: rukovodstvo pol'zovztelya [SCADA ZETView: Manual]. ETMS Company; 2013. p. 22. (In Russ.)][Schyotchik akusticheskij AC-001. Metodika poverki TsPP9-0.00.00IM [Acoustic meter АС-001. Calibration procedure TsPP9-0.00.00IM]. p. 8. Available from: http://www.staroruspribor.ru/ (In Russ.)][Biryukov BV, Danilov MА, Kivilis SS. Sredstva ispytaniya raskhodomerov [Means Test Meters]. Мoscow: Energoatomizdat Publ.; 1983. (In Russ.)][Bessonov АА, Sverdlov LZ. Metody statisticheskogo analiza pogreshnostej ustrojstv avtomatiki [Methods of statistical analysis of the automation devices errors]. Leningrad: Energiya Publ.; 1974.]