40
Capnography Specifications
†
Presented concentration of CO
2
and EtCO
2
can be false, indicating a high presence of nitrous oxide and other
interfering gases.
The table below shows the CO
2
and EtCO
2
concentration corrections. Only use agents listed in
the table below.
Respiration Range:
3 to 60 respirations/minute
Update Frequency:
Once every breath (No Breath alarm after 25 seconds)
Respiration Accuracy:
3 to 50 respirations/minute ±2
51 to 60 respirations/minute ±3
EtCO
2
/CO
2
Range:
0 to 9.9 kPa or 0 to 99 mmHg
EtCO
2
/CO
2
Accuracy:
±0.2 kPa / ±2 mmHg +8% of reading†
540 – 795 mmHg
(EtCO
2
/CO
2
reading reaches its steady state accuracy 10 minutes
after power up)
Update Frequency:
Once every breath (No Breath alarm after 25 seconds)
Sampling Rate:
4 Hz (4 times per second)
Total System Response Time:
4 seconds (includes delay time and rise time)
Drift of Measurement:
Within CO
2
accuracy specifications for 6 hours of continuous
monitoring
Measurement:
Automatic barometric pressure compensation and CO
2
temperature
compensation
Agent Concentration
Correction of Presented CO
2
to Real Concentration
50 – 70% N
2
O
Presented CO
2
x 0.75 = Actual CO
2
30 – 50% N
2
O
Presented CO
2
x 0.85 = Actual CO
2
0 – 30% N
2
O
No correction
0 – 5% Isoflurane
No correction
0 – 4% Halothane
Presented CO
2
x 0.98 = Actual CO
2
