Радіовимірювальний перетворювач концентрації горючих газів

Abstract

Thesis is devoted to the analysis of different sensors gas and basic principles of their work. The challenge was put to this work allows you to convert gas consumption in gas supply systems in the frequency output signal that provides high noise immunity, and therefore highly accurate flow measurement. Radio frequency converters with input signals have several advantages, namely combined as simplicity and universality that are inherent in analog devices, as well as accuracy and noise immunity, typical for couples with code output. These converters have a high sensitivity to the measured parameters, relatively small weight, dimensions. Own info, structural and technological compatibility with microelectronic means of information processing, which ensures their superiority over existing converters expenses. During the execution of the thesis was an analysis of sensors and their operating principles. Also in the course of the economic part of the thesis on the basis of calculations it was shown that the introduction of the production of transducers concentration of flammable gas is economically viable for both the producer and beneficial to consumers. During the execution of this section on health was considered such a contingency as technical solutions for the hygiene and health regulations, the calculation of the lower and upper concentration limits flash fire explosion dangerous mixture