In the paper there are presented tools for structural modelling of throttle diagrams that are developed as a basis to building transducers used for measuring fluid parameters. The definitions of throttle diagrams are improved and their classification is developed. Dependences are obtained to calculate the number of measuring channels in a throttle diagram and the number of possible variants of measuring transducers using the combinatory apparatus. A procedure for mathematical description of throttle diagrams in the form of graphs is proposed which makes it possible to obtain all diagrams with different measuring channels on the basis of certain throttle diagram. The model is developed in the form of a graph. A schematic diagram and a mathematical model of a transducer measuring physical and mechanical parameters of Bingham plastic fluid are developed based on a throttle diagram.

JO - Metrology and Measurement Systems L1 - http://journals.pan.pl/Content/108934/PDF/art_02.pdf L2 - http://journals.pan.pl/Content/108934 IS - No 4 EP - 659–673 KW - throttle diagram KW - measuring transducer KW - model KW - fluid ER - A1 - Pistun, Yevhen A1 - Matiko, Halyna A1 - Krykh, Hanna A1 - Matiko, Fedir PB - Polish Academy of Sciences Committee on Metrology and Scientific Instrumentation VL - vol. 25 JF - Metrology and Measurement Systems SP - 659–673 T1 - Structural modelling of throttle diagrams for measuring fluid parameters UR - http://journals.pan.pl/dlibra/docmetadata?id=108934 DOI - 10.24425/mms.2018.124884