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GLOSSARY OF TERMS AND ACRONYM LIST
Pressure Altitude: PA The altitude inferred directly from the local barometric pressure. Under
"Standard" conditions, pressure altitude would equate to the actual physical altitude, but otherwise
barometric pressure is affected by the local weather conditions and pressure altitude is therefore merely
an approximation of the actual altitude. However, for the purposes of oxygen delivery, pressure altitude
is actually a much better measure than physical altitude as it directly correlates to the physiological
processes that affect oxygen needs.
Threshold Altitude: The pressure altitude reference that controls the operation of the OPC in ON mode.
At or above the "threshold" altitude, the OPC dispenses oxygen; below the threshold altitude, it does not.
The OPC has been configured with a threshold altitude of 8,000 ft PA. When the barometric pressure is
low, operation will begin at a slightly lower physical altitude than when the barometric pressure is high.
The threshold altitude does not affect the operation of the OPC in either F20 or R/M mode.
Relative Humidity: RH
Non-Condensing: NC (referring to humidity).
Oxygen Pulse Controller: OPC
Mean Sea Level: MSL
GENERAL PRECAUTIONS & WARNINGS
WARNING: Oxygen is a highly oxidizing gas and can vigorously accelerate combustion. It
can provide a catalyst for spontaneous combustion resulting in personal injury or death
if not used properly and with caution. DO NOT use any type of oil or grease on any of the
fittings, valves or cylinders. DO NOT smoke while in use. DO NOT operate near an open flame.
WARNING: This device is classified as, and is only suitable for use as, a supplementary
breathing apparatus (SBA) for aviation use up to
the needed amount of oxygen for persons during excursions at flight altitudes where
supplemental oxygen is needed. This device is not suitable for any type of medical
operations. This device is not suitable for SCBA (Self Contained Breathing Apparatus) or
SCUBA (Self Contained Underwater Breathing Apparatus) operations.
WARNING:
When operating the PHODS around high power emitters such as friendly or
threat systems, PHODS may stop providing oxygen, or may start pumping oxygen when
not expected or required. If the unit is not operational, turning the OPC power OFF then
ON will be required. An operational check must therefore be performed immediately prior
to use at high altitudes.
WARNING:
Before using the PHODS, it is important to receive hypoxia awareness and
aeromedical training. Use of the PHODS without proper training is dangerous and can
result in serious injury, or death.
WARNING:
DO NOT apply any type of petroleum-based lubricant or grease to any part
of the PHODS. Hydrocarbon contamination, including petroleum-based lubricants, can
cause spontaneous combustion when exposed to compressed oxygen.
18,000
MSL. It is intended to supply
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