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A.5.9 CO
2
Specifications
Sidestream CO
2
Module
Measurement range 0 to 150 mmHg
Accuracy* Full accuracy mode:
0 to 40 mmHg:
41 to 76 mmHg:
77 to 99 mmHg:
100 to 150 mmHg:
±2 mmHg
±5% of reading
±10% of reading
±(3 mmHg+8% of reading)
ISO accuracy mode: Add ±2mmHg to the full accuracy mode
Sart-up time 20 s (typical), 90 s (maximum)
Accuracy drift Meets the requirement for measurement accuracy within 6 hours.
Resolution 1mmHg
Sample flowrate Connecting the DRYLINE II watertrap for adult and pediatric patient: 70 ml/
min or 100 ml/min
Connecting the DRYLINE II watertrap for neonatal patient: 70 ml/min or 100
ml/min
Sample flowrate tolerance ±15% or ±15 ml/min, whichever is greater.
Rise time Measured with a DRYLINE II neonatal watertrap and a 2.5-meter neonatal
sampling line: ≤250 ms @ 70 ml/min or ≤250 ms @ 100 ml/min
Measured with a DRYLINE II adult watertrap and a 2.5-meter adult sampling
line: ≤400 ms @ 70 ml/min or ≤330 ms @ 100 ml/min
Response time Measured with a DRYLINE II neonatal watertrap and a 2.5-meter neonatal
sampling line: <4 s@70ml/min or <3.5 s@100ml/min
Measured with a DRYLINE II adult watertrap and a 2.5-meter adult sampling
line: <7 s@70ml/min or <5.5 s@100ml/min
awRR measurement range 0 to 150 rpm
awRR accuracy <60 rpm:
60 to 150 rpm:
±1 rpm
±2 rpm
awRR resolution 1 rpm
Effect of interference gases on CO
2
measurements (for sidestream CO
2
module)
Gas Concentration (%) Quantitive effect*
N
2
O≤60±1 mmHg
Hal ≤4
Sev ≤5
Iso ≤5
Enf ≤5
Des ≤15 ±2 mmHg
*: means an extra error should be added in case of gas interference when CO
2
measurements are performed between 0-
40mmHg.
Inaccuracy specifications are affected by the breath rate and I: E change. The EtCO
2
accuracy is within specification for
breath rate ≤ 60rpm and I/E ratio ≤1:1, or breath rate ≤30rpm and I/E ratio ≤ 2:1.
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