Heat metering transducer, satisfying the concept of “subversive” innovation

About the authors:

Aleksandr A. Vakulin, Dr. Sci. (Tech.), Honorary Worker of Science and High Technologies of the Russian Federation, Professor, Department of Applied and Technical Physics, School of Natural Sciences, University of Tyumen, Tyumen, Russia; a.a.vakulin@utmn.ru

Sergey G. Montanari, Cand. Sci. (Phys.-Math.), Associate Professor, Department of Applied and Technical Physics, School of Natural Sciences, University of Tyumen, Tyumen, Russia; s.g.montanari@utmn.ru

Abstract:

Creating flow meters within the concept of “subversive” innovation is an urgent task for Russia. In accordance with this concept, the generated flowmeter must meet the minimum requirements acceptable to customers, contained in the relevant regulatory documents. This article presents the results of an experimental study on a possible option of a measuring converter of a heat flow meter. A distinctive feature of the measuring converter is the use of a heater in contact with a single temperature sensor. The research was carried out at the installation, assembled at the Department of Applied and Technical Physics of the School of Natural Sciences of the University of Tyumen (Tyumen, Russia). The experimental data provided includes temperature changes over time with a change in the mass flow of air at different mutual position of the temperature sensor and heater. The results obtained suggest installing the only temperature sensor first in the flow directly contacting the heater. To expand the dynamic range with a controlled change in the power of the heater and to reduce the cost of the heat meter, we suggest replacing the industrial meter-register IS-203.4 with a simplified secondary converter based on microcontroller system, which is intended for measurement, display, registration, and management of the metering transducer; its flowchart is provided.

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