Jet transducer designed for automated monitoring and control systems

Abstract

The use of the aerodynamic jet force action effect became widespread in designing the automatic sensors for physical and technical parameters of gases and liquids, converters and control devices. This technical solution provides high sensitivity and accuracy of the measured parameters in the rapidly changing processes increasing the speed of work. Introduction of sensors built on the basis of such technical solution is especially important in the automated control systems for fast technological processes, where control over various parameters should be quick and accurate. The paper considers a jet pneumatic optical pressure transducer based on the jet force action effect on a plate, which dimensions are commensurate with those for the jet cross section. Static and dynamic characteristics of the pneumatic optical transducer were determined, where the cumulative parameters were accepted as the quality factor criterion combining the measurements sensitivity with the natural frequency square. Using this criterion, optimal parameters of the sensing element were derived based on the considered aerodynamic effect.