36 Specifications
418
Microstream CO
2
Humidity Correction Factor
Either BTPS or ATPD can be selected as the humidity correction factor for the Microstream CO
2
readings. The formula for the correction calculation is:
M3015A Microstream CO
2
Performance Specifications
CO2 Range 0 to 150 mmHg (0 to 20 kPa), or 20% CO
2
, whichever is lower
Accuracy Up to 5 minutes during warmup: ±4 mmHg or 12%, whichever is greater
After 5 minutes warmup:
0 to 40 mmHg (0 to 5.3 kPa):±2.2 mmHg (±0.3 kPa)
Above 40 mmHg (5.3 kPa):±(5.5% + (0.08%/mmHg above 40 mmHg)) of
reading
These specifications are valid for 21% O
2
and N
2
balance, up to 35°C
ambient temperature, up to 60 rpm in adult mode and 100 rpm in neonatal
mode. Outside of these conditions the accuracy reaches at a minimum
±4 mmHg or ±12% of the reading, whichever is greater.
Resolution Numeric: 1.0 mmHg (0.1 kPa)
Wave: 0.1 mmHg (0.01 kPa)
Stability Included in Accuracy specifications
awRR Range 0 to 150 rpm
Accuracy 0 to 40 rpm: ±1 rpm
41 to 70 rpm: ±2 rpm
71 to 100 rpm: ±3 rpm
>100 rpm: ±5% of reading
Warm-up Time 5 minutes for full accuracy specification
Rise Time 190 ms for neonatal mode
(measured with FilterLine H for neonatal)
240 ms for adult mode
(measured with FilterLine H for adult)
Sample Flow Rate 50 + 15/-7.5 ml/minute
Gas Sampling Delay Time Maximum:
3 seconds (2m sample lines)
6 seconds (4m sample lines)
Sound Pressure Acoustic noise: <45 dBA
Total System Response Time The total system response time is the sum of the delay time and the rise time.
where:
P
BTPS
= partial pressure at body temperature and pressure,
saturated
P
ATPD
= partial pressure at ambient temperature and pressure, dry
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