thermocouple temperature conversion to voltage

[ahmed1994]

Hello;

I'm working on an experiment, I have several thermocouples. NIDAQ converters give me the temperature values from signal emitted by the thermocouple. For this moment I need to plot the thermocouple temperature according to thermocouple output voltage. Is this possible, it's urgent!

Best regards

[GerdW]

Hi ahmed,

Is this possible, it's urgent!

Yes!

Spoiler

There are formulas to convert thermocouple voltage to temperature and vice versa. Just apply them…

[RTSLVU]

Yes, it's called "scaling".

Thermocouples have a scaling factor usually milli or micro volts per degree.

For instance a K type thermocouple has approximately 41 µV/°C scaling

Here is a link to the Wikipedia article on Thermocouples  give it a read through and pay close attention to the Requirement for a reference junction section.

Also this article Cold junction compensation in thermocouples