Investigation of a parametric measuring element of speed of sound in air with the nickel resistance thermometer

Authors

  • J. Ramanauskas Kaunas University of Technology

Abstract

Investigation of a parametric measuring element of speed of sound in air with the nickel resistance thermometer This paper describes parametric measuring element of speed of sound in air with nickel rezizistance thermometer. Parametric measuring element form signal who represents an improved parametric model of speed of sound in the air. Investigated circuit of parametric measuring element has a point of minimum measuring error. This point enable to find optimum parameters of parametric measuring elements for various temperature ranges. These optimum parameters of parametric measuring element are presented in the table for four temperature ranges. Established, that optimum parametric measuring element has relative error 1.6 times smaller than mimimum relative error linear approksimation of improved parametric model of speed of sound in the air. Investigated tolerance of optimum parameters for parametric measuring elements.

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Published

1997-06-12

Issue

Vol. 27 No. 1 (1997)

Section

ULTRASONIC MEASUREMENTS

License

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