A-21
Measured with a neonatal watertrap and a 2.5-meter adult
sampling line:
<4 s @ 150 ml/min
<5 s @ 120 ml/min
<5 s @ 100 ml/min
<6.5 s @ 70 ml/min
awRR measurement range 0 to 120 rpm
awRR measurement precision ±2 rpm
Apnea time 10 s, 15 s, 20 s, 25 s, 30 s, 35 s, 40 s
Effect of interference gases on CO2 measurements
Gas Concentration (% ) Quantitive effect*
N2O ≤60
Hal ≤4
Sev ≤5
Iso ≤5
Enf ≤5
±1 mmHg
Des ≤15 ±2 mmHg
*: means an extra error should be added in case of gas interference when CO2 measurements are
performed under 0-40mmHg.
Alarm limit Range Step
EtCO2 High (low limit + 2) to 99 mmHg
EtCO2 Low 0 to (high limit - 2)mmHg
FiCO2 High 0 to 99 mmHg
1 mmHg
awRR High (low limit + 2) to 100 rpm
awRR Low 6 to (high limit - 2) rpm
1 rpm
* Accuracy applies for the following conditions:
1. Measurements begin after the CO
2
module warms up;
2. Ambient pressure is from 750 to 760 mmHg, and ambient temperature from 22 to
28ºC;
3. The measured gas is a dry gas and the balance gas N
2
;
4. Gas sample flow rate is 100 ml/min, respiration rate is 50 rpm with a fluctuation
between ±3 rpm, and I:E is 1:2.
When the operating temperature (near the module detector) is 5-25°C or 50-55°C, or the
respiration rate is greater than 50 rpm, the measurement accuracy is: ±4 mmHg (0 to 40
mmHg) or 12% of the reading (41 to 99 mmHg).
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