A - 21
Microstream CO
2
 Module
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 to 
40mmHg. 
Effect of interference gases on O
2 
measurements
Gas Quantitative effect
CO
2
0.2%
N
2
O0.2%
Hal, Des, Sev, Iso, Enf 1%
Standard Meet the standard of ISO 80601-2-55
CO
2
 Measurement range 0 to 150 mmHg
Accuracy* 0 to 38 mmHg: 
39 to 150 mmHg:
±2 mmHg
±5% of the reading (0.08% increased in error for 
every 1 mmHg if the reading is more than 38 
mmHg)
Accuracy drift Meet the requirement for measurement accuracy within 6 hours
* Accuracy applies for respiration rate up to 80 rpm. For respiration rate above 80 rpm and EtCO
2
 exceeding 18 mmHg, the 
accuracy is 4 mmHg or ±12% of the reading, whichever is greater. For respiration rate above 60 rpm, the above accuracy 
can be achieved by using the FilterLine H Set for Infant/Neonatal (Model: 006324). In the presence of interfering gases, the 
above accuracy is maintained to within 4%.
Resolution 1 mmHg
Recovery time <15 s (after defibrillation)
Sample flow rate  ml/min
Initialization time 30 s (typical)
180 s (maximum)
Response time 2.9 s (typical)
(The response time is the sum of the rise time and the delay time when 
using a FilterLine of standard length)
Rise time: <190 ms (10% to 90%) 
Delay time: 2.7 s (typical) 
awRR measurement range 0 to 150 rpm
awRR measurement accuracy 0 to 70 rpm: 
71 to 120 rpm: 
121 to 150 rpm: 
±1 rpm
±2 rpm
±3 rpm
awRR resolution 1 rpm
Data sample rate 40 Hz