Optimization of a single tube practical acoustic thermometer

Tavčar, Rok (author), Drnovšek, Janko (author), Bojkovski, Jovan (author), Beguš, Samo (author)

When designing a single tube practical acoustic thermometer (PAT), certain considerations should be addressed for optimal performance. This paper is concerned with the main issues involved in building a reliable PAT. It has to be emphasised that a PAT measures the ratio of the time delay between the single temperature calibration point (ice point) and any other temperature. Here, we present different models of the speed of sound in tubes, including the effects of real gases and an error analysis of the most accurate model with a Monte Carlo simulation. Additionally, we introduce the problem of acoustic signal overlap and some possible solutions, one of which is acoustic signal cancellation, which aims to eliminate the unwanted parts of an acoustic signal, and another is to optimize the tube length for the parameters of the gas used and specific temperature range.

• Language: English
• Keywords: acoustic waveguide, thermometer, temperature, speed of sound, real gas, Monte Carlo simulations
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FE - Faculty of Electrical Engineering
• Publication status: Published
• Publication version: Version of Record
• Year: 2020
• Number of pages: 19 str.
• Numbering: Vol. 20, iss. 5, art. 1529
• PID: 20.500.12556/RUL-133197
• UDC: 621.317:536.5
• ISSN on article: 1424-8220
• DOI: 10.3390/s20051529
• COBISS.SI-ID: 22292739
• Publication date in RUL: 17.11.2021

Record is a part of a journal

• Title: Sensors
• Shortened title: Sensors
• Publisher: MDPI
• ISSN: 1424-8220
• COBISS.SI-ID: 10176278

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
• Licensing start date: 10.03.2020

Secondary language

• Language: Slovenian
• Keywords: akustični valovod, termometer, temperatura, hitrost zvoka, neidealni plin, simulacija Monte Carlo

Projects

• Funder: ARRS - Slovenian Research Agency
• Project number: P2-0225
• Name: Metrologija in kakovost

• Funder: Other - Other funder or multiple funders
• Funding programme: Republic of Slovenia, Ministry of Economic Development and Technology, Metrology Institute
• Project number: 6401-18/2008/70