Masimo EMMA - Page 25

Battery life time Duracell Plus Alkaline: ~6 hours
Energizer Ultimate Lithium L92: ~10 hours
Notes:
(1)
EMMA displays CO
2
in partial pressure units (kPa or mmHg) and compensates the displayed value for
the actual barometric pressure.
(2)
Gas reading showing actual partial pressure at current humidity level. Partial pressure of CO
2
in the
alveoli, where the breathing gas is saturated with water vapor at body temperature (BTPS), is typically
6% lower than the corresponding CO
2
partial pressure after removal of all water vapor (ATPD).
(3)
To include quantitative effect on gas reading from variations in environment conditions and presence
of Halothane, Ethanol, Isopropyl alcohol, He, Acetone and Methane, the CO
2
accuracy range should
be increased to ± 4 mmHg or 10% of reading whichever is the greater. In addition the following
interference effects on CO
2
readings exists:
- 60 vol% of N
2
O typically increases CO
2
-readings by 10%
- 60 vol% of O
2
typically decreases CO
2
-readings by 4% (EMMA compensates CO
2
-values for
influence from 21% O
2
as default)
- 5 vol% of ENF, ISO, SEV typically increases CO
2
-readings by 8%.
- 15 vol% of DES typically increases CO
2
-readings by 12%.
- 80% Xe typically decreases CO
2
-readings by 10%
- 50% He typically decreases CO
2
-readings by 6%
(4)
CO
2
was tested at a RR of 40. As RR rates increases above 60 the accuracy range will also increase.
(5)
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