**TO INVESTIGATE THE EFFECT OF OPERATING PARAMETERS ON INDUCED EMF OF THERMOCOUPLE
**

Author’s Name : Harjeet Kumar | Gursewak Singh Brar

Volume 05 Issue 02 Year 2018 ISSN No: 2349-2503 Page no: 8 – 11

**Abstract:**

Thermocouple is a basic types of temperature measuring sensors, which measure the temperature by sensing some change in physical characteristic.it has been widely used due to its unique technical advantage. In the present study an attempt has been made to investigate the effect of various operating parameters such as Temperature, wire diameter and exposed length, on the induced EMF by thermocouple. In the present study, it has been proposed to prepare the thermocouple using Copper-constantan. These prepared thermocouples are further assessed with regards to its accuracy and calibrated using laboratory developed set up. Furthermore an attempt has been made to investigate the effect of various parameters on the induced emf by these thermocouples were investigated. To carry out experimental work statistical software Minitab 17v has been used. To assess the effect of various parameters such as temperature, wire diameter and exposed length on the response variable proper interaction of various parameters were carried out using Design of experiments technique based on the Taguchi L9 approach. Based on the design of experiment, an interaction of the various parameters were carried out. Response variable in terms of induced EMF for all the materials were observed with all the conditions as proposed by design of experiment. To further assess the interaction and the result obtained by experimentation Taguchi analysis was carried out on the result obtained from the experimentation. It was observed that the temperature is a significant parameters which effects the induced emf followed by wire diameter and exposed length.

**Keywords:**

Thermocouple; Taguchi approach; Sensors; Temperature

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