This article applies to all Ralston Field Gauge LC20 and Process Meter LC30 models.

1

Press and Hold the Menu/Up Arrow Button.

2

Press the Backlight/Right Arrow Button to scroll to UNITS

3

Press the Zero/Check Mark Button to enter the Units submenu.

The checkmark indicates current the current units the Field Gauge/Process Meter is set to display. 

If you do not wish to change engineering units, press the Menu/Up Arrow Button twice to return to the main pressure screen.

4

Scroll to your desired engineering unit using the right and left buttons.

5

Press the Zero/Check Mark Button to set the new unit.