Calibration of an electronic measuring system for ultrasonic analysis of solutions

Author

Barwic, Andrzej ; Dion, Jean Luc ; Morawski, Roman Z.

Author_Institution

Dept. d´´Ingenierie, Quebec Univ., Trois-Rivieres, Que., Canada

Volume

39

Issue

6

fYear

1990

fDate

12/1/1990 12:00:00 AM

Firstpage

1030

Lastpage

1033

Abstract

The problem of calibrating a system that measures the concentration of methanol in water is described. The limitations of polynomial and inverse-polynomial models used for this purpose are demonstrated. The cubic-spline interpolation is chosen and examined as a flexible means of calibration. A method for experimental validation of the results of calibration is proposed. It is concluded that spline-based calibration is much more flexible than the procedures dedicated to the fixed-polynomial or inverse-polynomial models. It allows the utilization of a much greater amount of calibration data, thus improving the accuracy of calibration, and requires much less a priori information on the relationships between quantities involved in the measurement process

Keywords

calibration; chemical variables measurement; interpolation; organic compounds; polynomials; splines (mathematics); ultrasonic applications; calibration; cubic-spline interpolation; electronic measuring system; fixed polynomial; inverse-polynomial models; methanol in water; organic compounds; solution concentration measurement; ultrasonic analysis; Calibration; Chemical analysis; Methanol; RLC circuits; Resonant frequency; Temperature dependence; Temperature sensors; Transfer functions; Ultrasonic variables measurement; Voltage;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.65820

Filename

65820