Thermocouples calibration and analysis of the influence of the length of the sensor coating

7th International Congress of Engineering Physics

物理学;工业技术

Noriega, M.^1 ; Ramírez, R.^1 ; López, R.^1 ; Vaca, M.^1 ; Morales, J.^1 ; Terres, H.^1 ; Lizardi, A.^1 ; Chávez, S.^1

Universidad Autónoma Metropolitana-Azcapotzalco., Distrito Federal, Mexico^1

关键词: Design and construction;    External insulations;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/582/1/012029/pdf
DOI  :  10.1088/1742-6596/582/1/012029

学科分类：工业工程学

来源: IOP

【 摘 要 】

This paper presents the design and construction of a lab prototype, with a much lower cost compared to the ones commercially sold, enabling the manufacture of thermocouples which are then calibrated to verify their functionality and acceptance. We also analyze the influence of the external insulation over the wires, to determine whether it influences temperature measurement. The tested lengths ranged from 0.00 m up to 0.030 m. The thermocouple was compared against the behavior of a thermocouple of the same type that was purchased with a commercial supplier. The obtained measurement showed less than 1 °C difference in some points. This makes the built thermocouple reliable, since the standard allows a difference of up to 2.2 °C.