Consider following problem
Want to measure temperature range of: -15oC < T1 < 35oC.
Reference junction, T2, = 0oC.
Output must be in range of -5Volts < V3 < +5Volts. V3 cannot be greater than +5 V.
Using a copper - constantan thermocouple of: a = -0.09 m V, b = 38.7 m V/oC, g = 0.041 m /oC