Performance; Capnograph - Nellcor NPB-75 Service Manual

Section 12: Specifications
12.4

PERFORMANCE

12.4.1 Capnograph

12-2
Sampling Rate
50 ±7.5 ml/min.
CO Range
2
0-99 mmHg (0-13.2 kPa and 0-13.0 Vol%) at sea level
Accuracy
The CO reading reaches its steady state accuracy 20 minutes after power
2
up.
0 - 38 mmHg: (±2 mmHg)
39 - 76 mmHg: (±5% of reading)
77 - 99 mmHg: (±8% of reading)
From 3 minutes after power-up until steady state is reached, the CO
reading accuracy is:
0 - 38 mmHg: (±4 mmHg)
39 - 76 mmHg: (±12% of reading)
77 - 99 mmHg: (±12% of reading)
Equivalent values for kPa and Vol%
Frequency Response:
EtCO accuracy is maintained up to 80 breaths/min. (for maintaining
2
accuracy for respiration rate over 60 bpm, use the neonatal mode.) From
81 to 150 bpm accuracy is ±12%, if the EtCO
in neonatal mode.
Respiration Rate
0-150 breaths/min.
Warm-up Time
30 seconds (typical)
Rise Time
190 msec for neonatal mode with low dead space endotracheal tube
adapter; 240 msec for adult mode with Microstream Airway Adapter
System Response Time
2.45 seconds (typical), 2.9 seconds maximum (includes delay time and rise
time)
Ambient Pressure
Compensated internally - automatic
Alarms
EtCO high, EtCO low, FiCO
2 2
is higher than 18.8 mmHg
2
high, Apnea message.
2
2