вимірювальний перетворювач

The paper presents the analysis of the resources of structural and parametric optimization of gas-hydrodynamic measuring transducers of physical and mechanical parameters of fluids. Resources such as the number of throttles and their arrangement in the diagram, type of throttle elements, measuring channels with a certain type of output signal, the supply mode of the measuring transducer can be integrated into the design process of the measuring transducer of a specific parameter.

The structures of the frequency-guided calibrator, measuring transducer and DC comparator based on quantum magnetometric sensors are proposed. The peculiarity of the proposed complex is the use of the universal structure of the QMS, for which only external commutations determine the type of device and its purpose.

This is a review article and it presents the flowrate characteristics of throttle elements used for measuring diagrams of transducers of fluids parameters. The review includes a wide range of research on the characteristics of incompressible and compressible fluids, Newtonian and Non-Newtonian fluids at the conditions of laminar, transient and turbulent flow through the channels of different cross-sections. The article considers equations for macroscopic flows. The theoretical equations for calculating the pressure drop for fluid flow in microchannels are presented.

Impedance spectroscopy is widely used to study biological, physical and chemical objects, for example in biomedical measurements, in study of the materials properties, particularly on micro- and nanoscale, for corrosion monitoring and diagnostics, for control of batteries, fuel cells. Often research is carried out on a objects under non-laboratory conditions. A good example of such research is the use of impedance spectroscopy for testing of corrosion-resistant coatings on various steel structures such as bridges, pipelines and other.

A new approach for finding analytical expression conversion function transmitter physical value by analyzing its output using developed special installation through which by special regulations define the basic parameters of the reference conversion function corresponding to the investigated curve.

Проаналізовано варіанти побудови вимірювальних перетворювачів «імпеданс-напруга» з контактними сенсорами, що забезпечують режим заданого струму або напруги та інваріантність результату до неінформативного імпедансу.