4. (6 pts) Predict the uncertainty of a Type J thermocouple (using ice as the reference junction)

at the temperatures given in the table below.

Temperature (°C) Expected Voltage NI-9219

Output (mv) Uncertainty

(°C)

-10

60

120

Thermocouple Sensor Total

Uncertainty (°C)

(Datasheet standard (°C)

limits of error)

Uncertainty

(3 pts) Show the sample calculations (for the 60°C measurement) the NI-9219 uncertainty,

thermocouple datasheet uncertainty, and total uncertainty (RSS). Convert the total uncertainty in mV

to total uncertainty in °C by calculating the sensitivity of the thermocouple between 49° and 51°C.