ECEN 5053-003 Homework Assignment : Embedding Sensors and Actuators

A. You are using a thermistor with a resistance of 5000Ω at 25.0 °C and with
β = 3630. You measure a resistance of 921 ohms. What is the
temperature in °C?

B. You are deciding between using a thermistor or a class A RTD for
measuring the temperature of a critical circuit board of a smart phone near
25°C. The accuracy must be within 0.25°C throughout the range of
measurement. Neither speed of response nor component cost is an issue.

What type of sensor do you use and why? Find an example online of a
sensor that you could use for this application.

D. You are using a Type K thermocouple to measure the temperature of a
process that operates in the range of 1000°C to 1100°C. In particular, you
know that the thermoelectric voltage is 42.053 mV at 1020°C and 42.440
mV at 1030°C. Having no other data in between, and no way to look up
the data on thermocouple tables, what is a good approximation for the
thermoelectric voltage at 1027°C?