Ball Flow Meter for an Electrically Conductive Liquid with an Active Bridge Converter

An improved version of an electrically conductive liquid ball flow meter with four electrodes is presented, in which the passive balanced circuit is replaced by an active bridge converter of liquid resistance between the electrodes, which leads to a theoretical increase in the dynamic measuring range towards low and ultra-low liquid flow rates, as well as an increase in noise immunity and noise tolerance of the circuit as a whole.

1. Sadykov R.R., Safinov S.S., Yasoveev V.K. Journal of Instrument Engineering, 2024, no. 6(67), pp. 533–541. DOI: 10.17586/0021-3454-2024-67-6-533-541. (in Russ.)

2. Sadykov R.R., Yasoveev V.K., Safinov S.S. Aktual’nyye problemy nauki: vzglyad na budushcheye (Current Problems of Science: A Look into the Future), Proc. of the 1st All-Russian Conference with International Participation, Sarapul, May 30, 2024, Izhevsk, 2024, рр. 28–36. (in Russ.)

3. Patent RU 2762946 C1, G01F 1/05, Sharikovyy raskhodomer elektroprovodnoy zhidkosti (Ball Flow Meter of Electrically Conductive Liquid), D.N. Pushchenko, R.R. Sadykov, Sh.S. Safinov, Patent application no. 2020142615, Priority 22.12.2020, Published 24.12.2021. (in Russ.)

4. Mitrofanova O.V. Gidrodinamika i teploobmen zakruchennykh potokov v kanalakh yaderno-energeticheskikh ustanovok (Hydrodynamics and Heat Transfer of Swirling Flows in the Channels of Nuclear Power Plants), Moscow, 2010, 288 р. (in Russ.)

5. Patent RU 2779813 C1, G01R 17/16, Mostovoy preobrazovatel’ soprotivleniya (Bridge Resistance Converter), D.N. Pushchenko, R.R. Sadykov, Sh.S. Safinov, Patent application no. 2021126392, Priority 08.09.2021, Published 13.09.2022. (in Russ.)

6. Patent RU 2811675 C1, G01F 1/05, Sharikovyy raskhodomer elektroprovodnoy zhidkosti (Ball Flowmeter for Conductive Liquids), R.R. Sadykov, Sh.S. Safinov, D.N. Pushchenko, V.K. Yasoveev, Patent application no. 2023125488, Priority 05.10.2023, Published 15.01.2024. (in Russ.)

7. Patent RU 2761416 C1, G01F 1/05, Universal’nyy sharikovyy raskhodomer zhidkosti (Universal Ball Liquid Flow Meter), D.N. Pushchenko, R.R. Sadykov, Sh.S. Safinov, Patent application no. 2021100496, Priority 12.01.2021, Published 08.12.2021. (in Russ.)

8. Patent RU 2837983 C1, G01F 1/05, Universal’nyy elektronno-opticheskiy sharikovyy raskhodomer zhidkostiUniversal (Electro-Optical Ball Flowmeter for Liquids), R.R. Sadykov, Sh.S. Safinov, D.N. Pushchenko, Priority 23.12.2024, Published 07.04.2025. (in Russ.)

9. Patent RU 2777291 C1, G01F 1/05, Sharikovyy raskhodomer elektroprovodnoy zhidkosti (Ball Flowmeter for Conductive Liquid), R.R. Sadykov, D.N. Pushchenko, Sh.S. Safinov, Patent application no. 2022105314, Priority 28.02.2022, Published 02.08.2022. (in Russ.)