Experimental study and simulation model for determining the response time of thermocouples with different insulation thicknesses

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dc.creatorKatrine Barbosa Oliveira Chaves
dc.creatorFabiano Drumond Chaves
dc.creatorJuan Jose Garcia Pabon
dc.creatorRicardo Junqueira Silva
dc.creatorLuiz Machado
dc.creatorWillian Moreira Duarte
dc.date.accessioned2024-10-08T14:51:14Z
dc.date.accessioned2025-09-09T00:13:13Z
dc.date.available2024-10-08T14:51:14Z
dc.date.issued2023
dc.format.mimetypepdf
dc.identifier.urihttps://hdl.handle.net/1843/77297
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofCongresso Brasileiro de Engenharia Mecânica
dc.rightsAcesso Aberto
dc.subjectEngenharia mecânica
dc.subjectModelagem matemática
dc.subject.otherThermocouple
dc.subject.otherTemporal response
dc.subject.otherMathematical modeling
dc.subject.otherTime constant.
dc.titleExperimental study and simulation model for determining the response time of thermocouples with different insulation thicknesses
dc.typeArtigo de evento
local.citation.epage10
local.citation.issue27
local.citation.spage1
local.description.resumoThe aim of this paper is to determine the temporal response of T-type and K-type thermocouples with different coating thicknesses. In applications with high thermal gradients, the thermocouple can experience thermal fatigue caused by its exposure to high temperature levels and severe thermal cycling involving heating and cooling of the sensor. Repeated expansions and contractions can lead to the appearance of micro-cracks, affecting the accuracy of temperature measurements and eventually causing sensor failure. In these circumstances, thermocouples with greater sheath thicknesses are more suitable. However, thicker thermocouples have a high response time, so that, in processes under transient conditions, the delay will generate a temperature error at every instant of time. The present study focuses on how different coating thicknesses affect the thermocouple's ability to accurately measure temperature changes over time, especially in transient conditions. Experimental tests were carried out with a T-type thermocouple, with a 0.5 and 1.5 mm sheath, and K-type thermocouples of thickness 6mm and 8mm sheath. An equation for prediction of delay time of thermocouples is presented and validated experimentally with mean error of 3.57%.
local.publisher.countryBrasil
local.publisher.departmentENG - DEPARTAMENTO DE ENGENHARIA MECÂNICA
local.publisher.initialsUFMG
local.url.externahttps://eventos.abcm.org.br/cobem2023/

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