CareFusion Alaris 8015 User Manual page 366

used. In the event of humidity or condensate outside the
EtCO module's operating specifications, the EtCO
2
present a "Remove Blocked Disposable" message.
Due to the relatively small sampling size needed for EtCO
readings, partial pressure does not affect the ability of the
EtCO module to measure EtCO
2
rate can be achieved.
Microstream Disposables are single-use, disposables which
must be changed with each use. The manufacturer's sample
flow, 50 mL/min, does not affect the disposable's life; however,
humidity and specific patient conditions can shorten the
effective life of the disposables. Microstream Disposables are
rated for up to 24 hours and 72 hours use, depending on the
specific Microstream Disposable.
The EtCO module provides readings in compliance with BTPS
2
(body temperature, pressure, saturation) standards.
no affect on accuracy due to cyclic pressure up to 10 kPa.
NOTE:
BTPS (body temperature, pressure, saturation assumed 37°C,

47 mmHg) calculations are made according to:
PCO = FCO x (Pb - 47)
2 2
Where:
FCO is fractional concentration of CO
2
FCO = % CO
2
Pb is ambient pressure.
PCO is partial pressure of CO
2
General Information
5-30
Principle of Operation (Continued)
, as long as the 50 mL/min
2
/100.
2
at BTPS.
2
module will
2
2

There is
in dry gas and
2
Alaris System User Manual – with v9.33 Model 8015
EtCO Module Section
2