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A.8.9 CO
2
Specifications
Sidestream CO
2
Module
Accuracy ±2% or ±1 mmHg, whichever is greater (excluding sensor error)
Refreshing rate ≤1 s
Pressure transducer
Excitement voltage 5 VDC, ±2%
Sensitivity 5 V/V/mmHg
Zero adjustment range ±200 mmHg
Impedance range 300 to 3000
Volume displacement <0.04 mm
3
/100 mmHg
Measurement mode Sidestream, mainstream
Technique Infrared absorption
Apnea time 10 s, 15 s, 20 s, 25 s, 30 s, 35 s, 40 s
Standard Meet the standard of ISO 80601-2-55
Measurement range 0 to 150 mmHg
Accuracy
1
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)
Accuracy drift Meets the requirement for measurement accuracy within 6 hours.
Resolution 1mmHg
Sample flowrate tolerance ±15% or ±15 ml/min, whichever is greater.
Sart-up time 20 s (typical), 90 s (maximum)
Sample flowrate 50 ml/min
Rise time ≤200 ms @ 50 ml/min (measured with a CO
2
adapter and sampling line)
≤250 ms @ 50 ml/min (measured with a standard sampling line)
≤280 ms @ 50 ml/min (measured with a long sampling line)
Response time ≤5.0 s@50ml/min (measured with a CO
2
adapter and sampling line)
≤5.0 s@50ml/min (measured with a standard sampling line)
≤6.5 s@50ml/min (measured with a long sampling line)
awRR
awRR measurement range 0 to 150 rpm
awRR accuracy ≤60 rpm:
61 to 150 rpm:
±1 rpm
±2 rpm
awRR resolution 1 rpm
Effect of interference gases on CO
2
measurements
Gas Concentration Quantitative effect
2
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