I understand that most people use a bridge circuit for RTD and possibly thermistor temperature sensing. I'm trying not to do that for several reasons.
I'd like to use an opamp in the classic constant current configuration, with the temperature sensing resistor as the load resistor. I sense the voltage change with an INA.
This seems to work so far, on the bench. Has anyone else had experiance with this? Are there any gotcha's I should be aware of when I put it in the field?