... that the type of thermocouple used in the replacement matches that of the measuring instrument. Different thermocouple types have very different voltage output curves. It is also required that thermocouple or thermocouple extension wire, is the type and must be used all the way from the sensing element to the measuring element. Large errors can develop if this practice is not followed. Plan To test a thermocouple I am going to conduct an experiment where the thermocouple is placed in different temperatures. I am going to try and find out what thermoelectric voltages are going to be produced by the thermocouple at different temperatures. Method: I will set up the apparatus so that I can perform the experiment. Firstly I will perform a preliminary experiment and take some readings to see if it works. If it does work then the experiment can go ahead. If it doesn't work then there will be alternations made. ...

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