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Capnography (CO
2
)
Propaq Encore Reference Guide 147 Welch Allyn
Barometric Pressure
Pressure Compensation Automatic
Operating Range -2,000 to 15,000 ft (-610 to 4572 m), 817 to 429 mmHg
Screen Display Numeric (CO
2
Status Window)
Units mmHg or kPa
Accuracy ±3 mmHg or 2.5% of difference from calibration pressure, whichever is
greater
a.Lower if in alarm.
b.Based on these airway conditions: sensor 42°airway adapter temperature = 33°C, water vapor pressure = 38
mmHg; standard gas mixture = CO
2
in balance air, fully hydrated at 33°C; barometric pressure = 760 mmHg
and flow = 60 ml/min.
c.Based on the following additional airway conditions: Sample line = 7 ft, 0.055 in ID (2.13 m, 1.4 mm ID);
Sample flow rate = 175 ml/min; Welch Allyn watertrap (new/unused); Respiratory rate ≤ 50 bpm, stable to ±3
breaths/min; Inspired/Expired time ratio = 1:2. Barometric pressure = 760 mmHg.
d.For Sidestream CO2, this applies only for BR≤50..
Characteristic Specification