Ultrasonic thermometry study and portable ultrasonic thermometer prototype

Abstract

This paper presents an ultrasonic thermometry state of the art study and shows principle of the ultrasonic thermometry through experiments with an ultrasonic thermometer prototype. The study covers a brief ultrasonic temperature measurement research history and focuses on recent revelations in this field. The thermometer prototype is constructed to be portable and usable for educational presentations. Its principle, performance and ultrasonic temperature measurements results are described in the experimental part. Keywords-ultrasonic thermometry; air temperature measurement; time of flight; ultrasonic thermometer;I.

Portable Ultrasonic Thermometer with Humidity Correction and Audible Sound Thermometry

“…Sound speed calculation in humid air is based on (1). Humid air density can be calculated using (2).…”

“…This work deals with ultrasonic temperature measurement. It follows up the paper [1], which dealt with general ultrasonic thermometry state-of-the-art study and ultrasonic thermometer development and testing. However, the thermometer in [1] had several drawbacks.…”

“…It follows up the paper [1], which dealt with general ultrasonic thermometry state-of-the-art study and ultrasonic thermometer development and testing. However, the thermometer in [1] had several drawbacks. It could not do a humidity correction, the transducer inertia caused a delay, which had to be precisely estimated, it had low measuring distance and precision was unsatisfactory in general.…”