Optimization of a Single Tube Practical Acoustic Thermometer

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...

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Main Authors: Rok Tavčar, Janko Drnovšek, Jovan Bojkovski, Samo Beguš
Format: Article
Language:English
Published: MDPI AG 2020-03-01
Series:Sensors
Subjects:
Online Access:https://www.mdpi.com/1424-8220/20/5/1529
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author Rok Tavčar
Janko Drnovšek
Jovan Bojkovski
Samo Beguš
author_facet Rok Tavčar
Janko Drnovšek
Jovan Bojkovski
Samo Beguš
author_sort Rok Tavčar
collection DOAJ
description 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.
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spelling doaj.art-9fd8254a5a7c4b35a0873dd093b5ed442022-12-22T02:57:05ZengMDPI AGSensors1424-82202020-03-01205152910.3390/s20051529s20051529Optimization of a Single Tube Practical Acoustic ThermometerRok Tavčar0Janko Drnovšek1Jovan Bojkovski2Samo Beguš3Laboratory of Metrology and Quality, Faculty of Electrical Engineering, University of Ljubljana, 1000 Ljubljana, SloveniaLaboratory of Metrology and Quality, Faculty of Electrical Engineering, University of Ljubljana, 1000 Ljubljana, SloveniaLaboratory of Metrology and Quality, Faculty of Electrical Engineering, University of Ljubljana, 1000 Ljubljana, SloveniaLaboratory of Metrology and Quality, Faculty of Electrical Engineering, University of Ljubljana, 1000 Ljubljana, SloveniaWhen 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.https://www.mdpi.com/1424-8220/20/5/1529acoustic waveguidethermometertemperaturespeed of soundreal gasmonte carlo simulation
spellingShingle Rok Tavčar
Janko Drnovšek
Jovan Bojkovski
Samo Beguš
Optimization of a Single Tube Practical Acoustic Thermometer
Sensors
acoustic waveguide
thermometer
temperature
speed of sound
real gas
monte carlo simulation
title Optimization of a Single Tube Practical Acoustic Thermometer
title_full Optimization of a Single Tube Practical Acoustic Thermometer
title_fullStr Optimization of a Single Tube Practical Acoustic Thermometer
title_full_unstemmed Optimization of a Single Tube Practical Acoustic Thermometer
title_short Optimization of a Single Tube Practical Acoustic Thermometer
title_sort optimization of a single tube practical acoustic thermometer
topic acoustic waveguide
thermometer
temperature
speed of sound
real gas
monte carlo simulation
url https://www.mdpi.com/1424-8220/20/5/1529
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