Technical data
258
Instructions for use Primus Infinity Empowered SW 4.5n
MVSPON
Measuring range 0 to 99.9 L per minute
Resolution of the displayed value 0.1 L per minute
Accuracy ±8 % of measured value or ±0.1 L per minute, the greater
value applies
O
2 Uptake
Measuring range 0 to 9999 mL per minute
Resolution of the displayed value 1 mL per minute
Accuracy ±15 % or ±20 mL per minute, the greater value applies
MV*CO
2
Measuring range 0 to 9999 mL per minute
Resolution of the displayed value 1 mL per minute
Accuracy ±20 % or ±20 mL/min; the greater value applies
Frequency measurement
Frequency (Freq.)
Measuring range 1 to 100 per minute
Resolution of the displayed value 1 per minute
Accuracy ±10 % or ±1 per minute,
the lower value applies (6 to 100 per minute)
±0.3 per minute (<6 per minute)
Gas measurement
Sidestream gas measurement
The gas sampled via the water trap is returned to the breathing system and included in measurement
and delivery calculations. The inlet of the gas measurement system contains a filter in the water trap and
there is a filter in the outlet of the sample gas return. All values are measured under ATPS conditions.
The sample flow is standardized to STPD conditions.
The measurement is corrected for ambient pressure.
Due to the T
10...90 time and the sampling rate, the accuracies of the measured values for O2, N2O, and
anesthetic agent may deviate at respiratory rates of 75 /min and an I:E ratio of 1:2. The influence of res-
piratory rate and I:E ratio on accuracy has been verified in a simulated breathing system using a rectan-
gular waveform for the gas concentration.
Endtidal measured values are calculated for each breath from the local maxima and minima of the real-
time measurements during expiration. If CO
2 respiratory phases are detected, the sample flow is com-
pensated during ventilation and flow measurement.
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