90
90
Airway gases, N-FCREC and N-FC
Sampling rate:
150±25 ml/min (sampling line
2 to 3 m, normal conditions)
Maximum sampling
line length:
6 m
Sampling delay:
2.1 s typical with a 3-m
sampling line
Total system response time: 2.4 seconds typical
with a 3-m sampling line,
including sampling delay and
rise time (typically 3.7 seconds
with a 6-m sampling line)
Warm-up time:
1 min for operation
30 min for full specification
Autozeroing interval: 4, 15, 30 and 60 minutes after
start-up, then every 60 minutes
Non-disturbing gases are those with a maximum
effect on the CO
2
reading at 5.0 vol% < 0.2 vol%.
The effect is valid for specific concentrations shown
in parentheses of the non-disturbing gas:
Ethanol C
2
H
5
OH (<0.3%)
Acetone (<0.1%)
Methane CH
4
(<0.2%)
Nitrogen N
2
(0 to 100%)
water vapor (0 to 100%)
Trichloromonofluoromethane (<1%)
Dichlorotetrafluoroethane (<1%)
Dichlorofluoromethane (<1%)
Disturbing gases and their effect on the CO
2
reading
at 5.0 vol% CO
2
are shown below. Errors listed
reflect the effect of specific concentrations (shown in
parentheses) of an individual disturbing gas and
should be combined when estimating the effect of
gas mixtures:
Halothane (4%) increases < 0.3 vol%
Isoflurane(5%) increases < 0.4 vol%
Enflurane(5%) increases < 0.4 vol%
Desflurane(24%) increases < 1.2 vol%
Sevoflurane(6%) increases < 0.4 vol%
Helium (50%) decreases < 0.3 vol%
If O
2
compensation is not activated:
O
2
(40 to 95%) decreases < 0.3 vol%
If O
2
compensation is activated:
O
2
(40 to 95%) error < 0.15 vol%
If N
2
O compensation is not activated:
N
2
O (40%) decreases < 0.4 vol%
If N
2
O compensation is activated:
N
2
O (40 to 80%) error < 0.3 vol%
Default alarm limits
7)
:
EtCO
2
high 8%, low 3%
FiCO
2
high 3%, low Off
Carbon dioxide (CO
2
)
Measurement range: 0 to 20 vol%
Resolution: 0.01%
Measurement rise time: < 300 ms with nominal flow
Accuracy:
0 to 15 vol%
± (
0.2 vol% + 2% of reading)
15 to 20 vol%
± (
0.7 vol% + 2% of reading)
Valid for respiration rate < 40 1/min at I:E ratio of
1:1. (Relative error is typically 10% for respiration
rate 80 1/min at I:E ratio of 1:1.) The accuracy is
specified in simulated ventilation. With higher
respiration rates and with varying ventilation
methods the specifications may not be met.
Respiration rate
Breath detection: 1% change in CO
2
level
Measurement range: 4 to 80 breaths/min
Accuracy:
±1 1/min in the range 4 to 20
1/min
±5% in the range 20 to 80 1/min
Resolution: 1/min
NOTE: CO
2
measurement is intended for patients
weighing over 5 kg (11 lb).
7)
Alarm limits and their adjustment range may vary
depending on the mode used.
Summary of Contents for S/5 FM
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Page 22: ...20 20 For your notes ...
Page 32: ...30 30 For your notes ...
Page 60: ...58 58 For your notes ...
