User's Manual Part 3
10-25
E.3.4.
Accuracy - all conditions
The following accuracy specifications are valid for all specified environmental conditions
except for interference specified in section E3.5 (effects from water vapor partial pressure on
gas readings) and section E3.6 (interfering gas effects).
Gas
Accuracy
CO
2
±(0.5 kPA + 8% of reading)
±(3.75 mmHg + 8% of reading)
N
2
O
±(2 kPA + 5% of reading)
±(15 mmHg + 5% of reading)
Agents
2
±(0.2 kPA + 10% of reading)
±(1.5 mmHg + 10% of reading)
O
2
±(2 kPA + 2% of reading)
1
All gas concentrations are reported in units of volume percent and may be translated into mmHg or kPa by using the
reported atmospheric pressure.
2 The accuracy specification is not valid if more than two agents are present in the gas mixture. If more than two agents
are present, an alarm will be set.
E.3.5.
Effects from water vapor partial pressure on gas readings
When the breathing gas through the sampling line, the gas temperature will adapt to the
ambient temperature before reaching the gas analyzer. The measurement of all gases will
always show the actual partial pressure at the current humidity level in the gas sample. As the
NOMO section removes all condensed water, no water will reach the ISA gas analyzer.
However reading will typically be 6% lower than corresponding partial pressure after removal of
all water.
E.3.6.
Interfering gas effects
Gas
Gas level
CO2
Agents
of 3886
N2O of
3886
CO2 only option
3886
ISA OR+
N
2
O
4)
60 Vol%
-
2)
-
1)
-
1)
-
1)
HAL
4)
4 Vol%
-
6)
-
1)
-
1)
-
1)
ENF, ISO, SEV
4)
5 Vol%
-
6)
-
1)
-
1)
-
1)
DES
4)
15 Vol%
-
6)
-
1)
-
1)
-
1)
Xe (Xenon)
4)
80 Vol%
-10% of reading
3)
-
1)
-
1)
He (Helium)
4)
50 Vol%
-6% of reading
3)
-
1)
-
1)
Metered dose inhaler
propellants
4)
Not for use with metered dose inhaler propellants
C
2
H
5
OH (Ethanol)
4)
0.3 Vol%
-
1)
-
1)
-
1)
-
1)
C
3
H
7
OH (Isopropanol)
4)
0.5 Vol%
-
1)
-
1)
-
1)
-
1)
CH
3
COCH
3
(Acetone)
4)
1 Vol%
-
1)
-
1)
-
1)
-
1)
CH
4
(Methane)
4)
3 Vol%
-
1)
-
1)
-
1)
-
1)
CO (Carbon monoxide)
5)
1 Vol%
-
1)
-
1)
-
1)
-
1)
O2
5)
100 Vol%
-
2)
-
2)
-
1)
-
1)