DST9851 Differential Pressure Composite Transmitter - Instructions for Changing Medium

Square instrument DST9851 differential pressure composite transmitter medium change operation: Double-click the right button to unlock the menu, then long-press the left button to enter the P0 menu, release after P0 is displayed, then long-press the right button to enter the P0 menu. P0 is the medium change menu; the current medium displayed is liquid oxygen. Change it to carbon dioxide, press the right button to switch the medium, press the right button multiple times, and after the screen displays carbon dioxide, long-press the left button to exit the medium change menu. P0 will be displayed, release it, wait for the 10-second countdown to finish, and the medium change to carbon dioxide is complete.