The calibration of contact surface temperature sensors depends on several influence parameters such as the contact thermal resistance, the body thermal conductivity, the geometry of the probe, the temperature of the surrounding fluid, etc. An accurate calibration call for an actual and efficient control of the above-mentioned parameters in order to reduce their effects during a calibration run. Some of them could also be varied in order to simulate the specific operating conditions of the probe. The paper describes the design and modelling of a dedicated calibration system for contact surface temperature sensors. The system is based on a high thermal capacity block, whose surface temperature can be controlled in the temperature range from ambient to about 350 °C. The system is initially modelled and its operation simulated using a numerical code to optimise its geometry and operating conditions as well as to highlight the critical points to be monitored in the actual operation. A mechanical design was performed on the basis of the numerical calculations and a first prototype was constructed. A preliminary characterization is carried out and the results are reported in the paper. A preliminary comparison of the numerical model with the experimental results is made in order to validate the model.
Design and Modelling of a Surface Temperature Calibration System / Arpino, F; Dell’Isola, M.; Fernicola, Vito; Frattolillo, A.; Rosso, Lucia. - 1:(2004), pp. 632-641. (Intervento presentato al convegno Tempmeko 2004, the 9th International Symposium on Temperature and Thermal Measurement tenutosi a Cavtat - Dubrovnik Croatia nel 22 - 25 giugno 2004).
Design and Modelling of a Surface Temperature Calibration System
FERNICOLA, VITO;ROSSO, LUCIA
2004
Abstract
The calibration of contact surface temperature sensors depends on several influence parameters such as the contact thermal resistance, the body thermal conductivity, the geometry of the probe, the temperature of the surrounding fluid, etc. An accurate calibration call for an actual and efficient control of the above-mentioned parameters in order to reduce their effects during a calibration run. Some of them could also be varied in order to simulate the specific operating conditions of the probe. The paper describes the design and modelling of a dedicated calibration system for contact surface temperature sensors. The system is based on a high thermal capacity block, whose surface temperature can be controlled in the temperature range from ambient to about 350 °C. The system is initially modelled and its operation simulated using a numerical code to optimise its geometry and operating conditions as well as to highlight the critical points to be monitored in the actual operation. A mechanical design was performed on the basis of the numerical calculations and a first prototype was constructed. A preliminary characterization is carried out and the results are reported in the paper. A preliminary comparison of the numerical model with the experimental results is made in order to validate the model.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
