Not if the temp readings were at different times. The only realistic way would be to convert the readings using the built-in ADC in a microprocessor and storing the values.

 

Not if the temp readings were at different times. The only realistic way would be to convert the readings using the built-in ADC in a microprocessor and storing the values.

Oh yes, sorry, I misinterpreted his question.

 

Magical, you can get an integrated A to D converter and display quite easily. A simple panel meter will work, for instance. That only lets you see the temp as it is at the present.

For doing any more processing with the current and a past temp, you have to have memory and some processor to do the comparing. That tends to imply a microcontroller.

 

Why dont u try out LM 35

 

This sounds a perfect application fo a pt 100 the temerature range is good and linearity on a pt100 can be better than 0.1%
regards trev