TM 55-1510-221-10
STABILIZED CYLINDER TEMPERATURE
500
1,000
1,500
2,000
CYLINDER PRESSURE (PSIG)
Figure 2-20. Cylinder Capacity vs Pressure and Temperature
KNOWN
Pressure = 1,600 PSIG stabilized cylinder tem-
perature is estimated at 20º C decreased stabilized
cylinder temperature is estimated at -30º C.
METHOD
a. Enter 1600 PSIG move up to 20º C line,
move right to 84%.
b.
Move left on 84% line to -30º C line, move
down to 1250 PSIG.
WANTED
100% capacity pressure at known temperature.
KNOWN
Temperature = -30º C.
METHOD
Move left along 100% line to -30º C line and
move down to 1420 PSIG.
(1.)
Regulator control panels. Each regula-
tor control panel contains a blinker-type flow indica-
tor, a 500 PSI pressure gage, a red emergency pres-
sure control lever placarded EMERGENCY -
NORMAL - TEST MASK, a white diluter control
lever placarded 100% OXYGEN - NORMAL OXY-
AP010340
GEN, and a green supply control lever placarded
ON - OFF. The diluter control lever selects either
normal or 100% oxygen, but acts to select only when
the emergency pressure control lever is in the NOR-
MAL position.
When not in use, the diluter control lever
should be left in the 100% OXYGEN
position to prevent regulator contamina-
tion.
(2.) The emergency pressure control lever
has three positions. Two positions control oxygen
consumption for the individual using oxygen, and
the remaining position serves for testing hose and
mask integrity. In the EMERGENCY position, the
control lever causes 100% oxygen to be delivered at
a safe, positive pressure. In the NORMAL position,
the lever allows delivery of normal or 100% oxygen,
depending upon the selection of the diluter control
lever. In TEST MASK position, 100% oxygen at
positive pressure is delivered to check hose and
mask integrity.
(3.) The 500 PSI oxygen pressure gage
provided on the oxygen control panels should never
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