138
General specifications
Loss of pressure less than 0.3cmH20 at 30L / min.
Neonatal (Disposable):
Adds less than 1ml of dead space;
Loss of pressure less than 1.3cmH20 at 10L / min.
Table 46 - IRMA CO
2
Sensor - Outputs
Outputs
Breath Detection
Adaptive threshold, minimum 1 vol% change in CO
2
concentration.
Respiratory rate
0
–150 ±1 bpm. The respiration rate is displayed after three breaths and the
average value is updated every breath.
Fi and ET
Fi and ET are displayed after one breath and have a continually updated breath
average.
Wave forms
CO
2
.
Diagnostic Parameters
Atmospheric pressure, software and hardware revision, serial number.
Information
New Breath Detection, Apnea, Check Adapter, Unspecified Accuracy, and
Sensor Error.
Method to calculate the gas
level reading
The highest concentration of CO
2
during one breathing cycle with a weight
function applied to favor values closer to the end of the cycle.
Table 47 - IRMA CO
2
sensor - Gas analyzer
CO
2
Gas Analyzer
Sensor
Gas Analyzer with 2 to 9 NDIR Channels (Non-Dispersive Infrared) that
measures in the range of 4 to 10μm. Makes pressure, temperature and
interference correction throughout the spectral range.
Data acquisition rate
10 kHz
Data sampling rate
20 Hz
Calibration
Zeroing recommended when changing Airway adapter. No span calibration
required for the IR bench.
Warm-up Time
Information on the concentration is analyzed and sent every 10 seconds.
Total accuracy in measurements: 1 minute.
Rise time (at 10 L/min)
CO
2
≤ 90ms.
Total System Response Time
< 1s.
•
Accurate CO
2
monitoring is achieved 1 minute after initialization.
