Cardinal Health Alaris 8000 Series Directions For Use Manual page 311

The mL/min sampling flow rate reduces liquid and secretion
50
accumulation, decreasing the risk of obstruction in the sample
pathway in humid
ICU
eliminates the need for water traps and prevents excess fluid
accumulation.
The t Module draws a gas sample through a
E CO
2
microsample cell (
15
volume is quickly flushed, allowing for a rise time of
approximately ms and accurate
190
high respiration rates.
The Microbeam source illuminates the microsample cell
IR
and the reference channel. This proprietary
generates only the specific wavelengths characteristic of the
absorption spectrum. The
CO
2
the microsample cell and the
reference channel are measured by
The microcomputer in the
concentration by comparing the signals from both channels.
No operator intervention is required for routine moisture or
condensate.
All Microstream Disposables contain an inline hydrophobic
®
filter to extract condensate and/or patient secretions while
maintaining measurement and waveform integrity. For humid
conditions within the operating parameters of the
Module and Microstream
quantitative effect on the
mL/min sample size rate. In high humidity environments or
50
extended monitoring periods (
Microstream Disposables designed for those instances
®
should be used. In the event of humidity or condensate
outside the t Module's operating specifications, the
E CO
2
t Module will present a "Remove Blocked Disposable"
E CO
2
message.
Due to the relatively small sampling size needed for
readings, partial pressure does not affect the ability of the
t Module to measure
E CO
2
rate can be achieved.
Alaris System Directions for Use
®
EtCO Module Section
2
Principle of Operation (Continued)
environments. The small sample size
microliters). This extremely small
readings, even at
CO
2
light that passes through
IR
light that passes through the
IR
detectors.
IR
t Module calculates the
E CO
2
Disposables, humidity has no
®
concentration, given the small
CO
2
- hours), only
24 72
t , as long as the
E CO
2
light source
IR
CO
2
t
E CO
2
t
E CO
2
mL/min
50
5-25
General Information