Embraer EMB145 Operation Manual page 2184

OXYGEN
OXYGEN PRESSURE CORRECTION CHART
An Oxygen Pressure Correction Chart is located on the oxygen
service panel door. This chart is provided for the maintenance
personnel's use when recharging the oxygen cylinder. Additionally, it
may be used by the crew to check if the oxygen cylinder's pressure is
above the minimum oxygen pressure for dispatch.
To use the chart for recharging purposes:
Enter the chart with the cylinder compartment temperature (cockpit
temperature) and go vertically up to the desired pressure at 21°C.
From the intersection point, trace to the left to read the indicated
gauge pressure to be attained.
To use the chart for dispatching purposes:
Enter the chart simultaneously with the cylinder compartment
temperature (cockpit temperature) and indicated gauge oxygen
pressure (on MFD or oxygen service panel). The intersection
determines the oxygen cylinder's equivalent pressure at 21°C, by
interpolating the two adjacent standard curves.
EXAMPLE
Associated condition:
− Crew............................................................ PILOT,
− Indicated gauge pressure ........................... 1600 PSI
− Cylinder compartment temperature ............ 30°C
As the intersection is above the dashed line for the associated
condition, the airplane may be dispatched.
Page
2
2-16-30
AIRPLANE
OPERATIONS
MANUAL
Code
01
COPILOT
AND OBSERVER
REVISION 36