Abstract: A brake line pressure sensor calibration system for an end of train device includes one or more computer processors, a display screen, and a sensor configured to measure the brake line pressure of the train. The processors are configured to implement a calibration of the sensor, guide a user through a sensor calibration, and acquire calibration data during the calibration. The processors guide the user through the calibration by generating calibration instructions, which the display screen displays, and receiving input responsive to the instructions. To perform the calibration, the sensor acquires at least one pressure measurement of a controlled air pressure applied to the sensor in response to a pressure setpoint input by the user in accordance with the calibration instructions. The device includes an internal memory configured to store the calibration expiration data, which is also displayed on the display screen.