T Thermocouple Calibration

Connect the calibration voltage source to the logger observing the correct polarity
Set the calibration source to 0.0 mV
Enter 0 in to the box labeled First Point Actual Value
Note: If you are using °F enter 32 instead of 0
Click the First Point Button
Set the calibration source to 20.87 mV
Enter 400 in to the box labeled Second Point Actual Value
Note: If you are using °F enter 752 instead of 400
Click the Second Point Button
The Calibration Offset and Calibration Gain figures will now be calculated and shown on the calibration screen.
These Offset and Gain figures should now be written to the logger
Click the Write Unit, Scaling and Calibration Values to logger button
The Calibration process is now complete

Go to the Realtime screen
Set the calibration source to 0.0 mV
The T Thermocouple gauge on the Realtime screen should show the ambient temperature (Ambient Temperature + 0°C)
Set the calibration source to 20.87 mV
The T Thermocouple gauge on the Realtime screen should show ambient temperature + 400°C

a T thermocouple junction gives 0.0mV when the thermocouple and the logger are at the same temperature.
It will give 20.87mV when there is a 400degC difference between the logger and the thermocouple.

Connect the T thermocouple sensor to the logger
Allow the T thermocouple sensor to stabilize at the first known (lower) temperature
Read the Ambient Temperature of the Logger using the Realtime Screen
Enter the first known temperature MINUS THE AMBIENT TEMPERATURE in to the box labeled First Point Actual Value
Click the First Point Button
Allow the T thermocouple sensor to stabilize at the second known temperature
Read the Ambient Temperature of the Logger using the Realtime Screen
Enter the second known temperature MINUS THE AMBIENT TEMPERATURE in to the box labeled Second Point Actual Value
Click the Second Point Button
The Calibration Offset and Calibration Gain figures will now be calculated and shown on the calibration screen.
These Offset and Gain figures should now be written to the logger
Click the Write Unit, Scaling and Calibration Values to logger button
The Calibration process is now complete

If this procedure is used the T Thermocouple will show the correct temperature when sitting in free air.

If the ambient temperature is not subtracted from the known temperatures the T thermocouple will read high by the amount of the ambient temperature.

Connect the T thermocouple sensor to the logger
Allow the T thermocouple sensor to stabilize at the first known (lower) temperature
Read the Ambient Temperature of the Logger using the Realtime Screen
Enter the first known temperature MINUS THE AMBIENT TEMPERATURE PLUS 32 °F in to the box labeled First Point Actual Value
Click the First Point Button
Allow the T thermocouple sensor to stabilize at the second known temperature
Read the Ambient Temperature of the Logger using the Realtime Screen
Enter the second known temperature MINUS THE AMBIENT TEMPERATURE PLUS 32 °F in to the box labeled Second Point Actual Value
Click the Second Point Button
The Calibration Offset and Calibration Gain figures will now be calculated and shown on the calibration screen.
These Offset and Gain figures should now be written to the logger
Click the Write Unit, Scaling and Calibration Values to logger button
The Calibration process is now complete

If this procedure is used the T Thermocouple will show the correct temperature when sitting in free air.

If the ambient temperature is not subtracted from the known temperatures the T thermocouple will read high by the amount of the ambient temperature.