3:Operation
19
NOTE
: The inhalation time is defined as the time of positive
inhalation flow and does
not
include the breath hold time. If the vents
inhalation time includes the inhalation pause time, the Certifier
®
FA’s
I:E ratio will not match the vents I:E ratio.
3.4.12 I Time
The inhalation time (I TIME) can be displayed on the bottom line of
the control module display.
NOTE
: A valid flow cycle must occur for this value to be displayed.
See
Section 3.6
,
Breathing Cycles and Trigger Levels
, for details.
NOTE
: The inhalation time is defined as the time of positive
inhalation flow and does not include the breath hold time. If the vents
pause inhalation time includes a pause time, the Certifier
®
FA’s I time
will not match the vents I time.
3.4.13 Absolute Pressure
The absolute pressure in the flow tubes can be displayed on the
bottom line of the control module display in units of “mmHg”.
NOTE
: For distinguishing absolute pressure from low pressure, the
resolution for absolute pressure measurement is displayed in a
resolution of 1 mmHg and low pressure (
Section 3.4.7
) is displayed
in a resolution of 0.1 cmH
2
O or mmHg.
3.4.14 Oxygen Concentration
When the oxygen sensor is attached to the High Flow module, the
oxygen concentration “%O
2
” can be displayed on the bottom line of
the control module display. Oxygen concentration can also be
displayed on the top line of the display. See
Section 3.4.6
.
Daily calibrations need to be done on the oxygen sensor. See
Section 3.5.2
for instructions on oxygen sensor calibration.
NOTE
: The
symbol will appear on the display when the oxygen
cable is attached.