T Type Thermocouple for delta T measurement

Hi,
I am working on an experiment in which I am expected to measure delta T values as low as 0.35.
The only resource available for the measurement is T Type thermocouple.
I would like to know if anyone knows how to wire up a T Type thermocouple to measure the delta T, what equations to use to get voltage to delta T. what would be the uncertainity etc.

Please share any ideas that you may have.

Thank you
Kamal

 

Thank you for your reply. Some more questions before I actually start making the changes in my experimental set up.
Please correct me if I am wrong, I have been doing a lot of googling through the night and this is my take,

I understand that the two junctions will be at the two points,(like a M shape); the net result of this will be to read a voltage which would correspond to the differential temperature.
Now the wires that come out can no longer be connected to the data logger as temperature measurement because the two ends would be of the same material Cu, in the case of T type.
Also, we don't want the data logger's inbuilt algorithm to do any cold end compensation.
Thus the wires would be connected to the data logger as a voltage reading.

How do I proceed from here? Should I collect the voltage data and put it into an excel file and use the eight order polynomial to convert the voltage to temperature? And what would the accuracy of this reading be? What is the general method to arrive at the accuracy of such measurements?

Thanks in advance
Kamal

 

Thank you for your reply. Some more questions before I actually start making the changes in my experimental set up.
Please correct me if I am wrong, I have been doing a lot of googling through the night and this is my take,

I understand that the two junctions will be at the two points,(like a M shape); the net result of this will be to read a voltage which would correspond to the differential temperature.
Now the wires that come out can no longer be connected to the data logger as temperature measurement because the two ends would be of the same material Cu, in the case of T type.
Also, we don't want the data logger's inbuilt algorithm to do any cold end compensation.
Thus the wires would be connected to the data logger as a voltage reading.

How do I proceed from here? Should I collect the voltage data and put it into an excel file and use the eight order polynomial to convert the voltage to temperature? And what would the accuracy of this reading be? What is the general method to arrive at the accuracy of such measurements?

Thanks in advance
Kamal