Change Last and Next Calibration Dates on a FieldLab Customize the last and/or next calibration due date on the FieldLab. Print Article 1 Plug the FieldLab Pressure into the computer with the provided USB cord, power it on and open FieldLab Desktop software. 2 Select the FieldLab device you wish to change on the Devices screen. 3 Select the Sensors Tab 4 Select the Edit Calibration Date Settings button. 5 Revise the calibration dates as desired and select Save Changes button.