Accutorr 7 Operator’s Manual A - 13
Effect of interference gases on CO
2
measurements
Gas Concentration (%) Quantitive effect*
N
2
O ≤60 ±1 mmHg
Hal ≤4
Sev ≤5
Iso ≤5
Enf ≤5
O
2
≤100
Des ≤15 ±2 mmHg
*: means an extra error should be added in case of gas interference when CO
2
measurements are performed between 0-40mmHg.
Inaccuracy specifications are affected by the breath rate and I: E change. The EtCO
2
accuracy is within specification for breath rate ≤ 60rpm and I/E ratio ≤1:1, or breath rate
≤30rpm and I/E ratio ≤ 2:1.
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