Hi, im trying to build an eletronic system which autmatically detects a clooged heat exchanger. In order to do this i need to use two thermocouples which would measure the temperature, in tems of voltage, at teh intake and out take of teh heat exchange. I need some sort of voltage comparator which measures the difference in voltage between the two thermocoupples. Someone told me to use a voltage comparator circuit, but from what i see it is very limited to my use. Is there any type of circuit that can measure the difference between two voltages and give me a voltage that is proportional to this difference. I would greatly apprecaite anyones help in this matter as im am more oriened toward refrigeration.
Thanks
Kris
Thanks
Kris