DocumentCode :
2517990
Title :
On generalisation of dual-thermocouple sensor characterisation to RTDs
Author :
Brown, Colin ; Kee, Robert J. ; Irwin, George ; McLoone, Seán F. ; Hung, Peter C.
Author_Institution :
Virtual Eng. Centre, Queen´´s Univ. Belfast, Belfast, UK
fYear :
2010
fDate :
26-28 April 2010
Firstpage :
991
Lastpage :
996
Abstract :
Intrusive temperature sensors such as thermocouples and resistance temperature detectors (RTDs) have become industry standards for simple and cost-effective temperature measurement. However, many situations require the use of physically robust and therefore low bandwidth temperature sensors. Much work has been published on dual-thermocouple thermometry as a means of obtaining increased sensor bandwidth from relatively robust thermocouples, which are assumed to have first-order response. This contribution seeks to determine if RTDs, which are known to have approximately first-order response, can also be characterised using the dual-thermocouple approach. Experimental results show that the response of an RTD cannot be represented by a first-order model with sufficient accuracy to allow successful application of this method. Furthermore, simulation studies demonstrated that if a sensor exhibits even marginally second-order response, highly inaccurate temperature reconstructions follow. It is concluded that a higher-order model that more accurately reflects RTD response would be required for successful dual-RTD characterisation.
Keywords :
temperature sensors; thermocouples; bandwidth temperature sensors; dual-RTD characterisation; dual-thermocouple sensor characterisation; first-order response; resistance temperature detectors; second-order response; Acoustic measurements; Bandwidth; Gas detectors; Heat transfer; Robustness; Sensor phenomena and characterization; Temperature measurement; Temperature sensors; Thermal sensors; Vehicle dynamics;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
MELECON 2010 - 2010 15th IEEE Mediterranean Electrotechnical Conference
Conference_Location :
Valletta
Print_ISBN :
978-1-4244-5793-9
Type :
conf
DOI :
10.1109/MELCON.2010.5475914
Filename :
5475914
Link To Document :
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