Class1 Digital Display - Manual (Page 28)

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Calibration for Breathing Oxygen Gauge installations:
Empty Cylinder (Closed Valve)
With the oxygen bottle closed and the system purged, enter
the calibration password.
L L L R R R
The left (0%) bar will flash to indicate that you are ready to calibrate for an
empty system.
Activate the left switch followed by the right switch.
The right (100%) bar will flash to indicate that the display is ready to calibrate
for a full system.
Maximum Volume
With a full oxygen bottle and the system pressurized, actuate the
right switch and then the left switch.
Calibration is complete.
NOTE: Calibration should be accomplished using an oxygen
cylinder filled to the locally established maximum pressure.
Oxygen Supply