NomoLine ISA CO2 Chapter 5: Specifications
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Data Output Specifications
Breath detection Adaptive threshold, minimum 1 vol% change in CO
2
concentration.
Respiration rate
***
0 to 150 ± 1 breaths/min
Fi and ET **** Fi and ET are displayed after one breath and have a continuously
updated breath average.
The following method is used to calculate end-tidal (ET) values:
• 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.
ET will typically decrease below nominal value (ET
nom
) when respiration
rate (RR) exceeds the RR threshold (RR
th
) according to the following
formula for CO
2
:
(with NomoLine HH Adult/Pediatric Airway Adapter Set)
Flags Breath Detected, No Breath Detected, Check Sampling Line, Unspecified
Accuracy, Sensor Error
*** Measured at I/E ratio 1:1 using breath simulator according to EN ISO 80601-2-55 fig.
201.101.
**** Measured according to EN ISO 80601-2-55.
Gas Analyzer Specifications
Sensor head Dual channel NDIR type gas analyzer measuring at 3.5 to 4.5
μm.
Data acquisition rate 10 kHz (sample rate 20 Hz / channel).
Compensations Automatic compensation for pressure and temperature.
Manual compensation for broadening effects on CO
2
.
Calibration No span calibration is required.*****
Warm-up time < 10 seconds (Concentrations reported and full accuracy)
CO2 Rise time at 50
sml/min sample flow
*****
≤ 200 ms
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