End Tidal Carbon Dioxide (EtCO
2
)
EtCO
2
- 21
Specifications
This section summarizes the specifications of the M Series End-Tidal Carbon Dioxide (EtCO
2
) option.
CAPNOSTAT 3
LoFlo
Transducer Type
Mainstream
Sidestream
Principle of Operation
Non-Dispersive Infrared (NDIR) single beam optics, dual wavelength, no moving
parts.
Warm Up Time
Full specifications within 60 seconds. Capnogram in 15 seconds.
EtCO
2
Measurement Range
0 - 100 mmHg
0 - 13%
0 - 12.5 kPa
EtCO
2
Accuracy
(at 760 mmHg, ambient
temperature of 25°C)
0 - 40 mmHg, ±2 mmHg
41 - 70 mmHg, ±5% of actual
71 - 100 mmHg, ±8% of actual
0 - 40 mmHg, ±2 mmHg
41 - 70 mmHg, ±5% of actual
71 - 100 mmHg, ±8% of actual
±12% for respiration rate above
80 BrPM
EtCO
2
Resolution
0.5 mmHg
EtCO
2
Stability
Short Term Drift: Drift over four hours < 0.8 mmHg.
Long Term Drift: Accuracy specification will be maintained over a 120 hour period
after zeroing.
EtCO
2
Noise
RMS noise of the sensor < 0.25 mmHg at 7.5% CO
2
.
EtCO
2
Rise Time (10-90%)
< 60 ms (Adult/pediatric adapters)
< 50 ms (Neonatal adapters)
< 200 ms
Respiration Rate Range
0 - 150 breaths per minute
Respiration Rate Accuracy
±1 breath per minute
Sample Flow Rate
N/A
50 ml/min
Compensations
Barometric pressure 550 - 780 mmHg (automatic).
Operator selectable O
2
/N
2
O compensation.
EtCO
2
Alarm Limits
User selectable, High 5 - 100 mmHg, Low 0 - 95 mmHg, OFF.
Respiration Rate (RR) Alarm
Limits
User selectable, High 5 - 150 respirations per minute, Low 0 - 100 respirations per
minute, OFF.
Halogenated Agents
Specification allows for halogenated anesthetic agents that may be present at
normal clinical levels. The presence of Desflurane in the exhaled breath beyond
normal values (5-6%) may positively bias carbon dioxide values by up to an
additional 2-3 mmHg.
Airway Adapter Deadspace
Adult < 5 cc
Infant < 1.0 cc
Adult 7.3 cc maximum
Pediatric/Infant < 1 cc
Environmental
Operating Temperature:
10º C to 40º C
Storage and Shipping Temperature: -10º C to 55º C
The M Series unit may not perform to specifications when stored at the upper or
lower extreme limits of storage temperature and immediately put into use.
Electromagnetic Immunity
AAMI DF-39, IEC 60601-1-2, 20 V/m