Compact Airway modules
Document No. 800 1009-1
47
•
Common Offset is the compensation factor for pressure difference reading of the difference
sensor when applying a equal pressure on both sides of the sensor.
•
Valves can be changed between MEASUREMENT and ZEROING.
•
Zeroing automatic zeroing either ENABLED or DISABLED (only factory service menu).
•
Aw Pressure shows the real time value of airway pressure
•
Condition shows in which reference conditions results are. With calibration pump or
spirometry tester the results are always in ATP. If breathing is detected (EtCO
2
>
1.0 %),
results are according to Flow & Vol Setup selection.
•
Flow shows flow measurement value.
•
TVol Exp, TVol Insp, MVol Exp and MVol Insp are shown to ease calibration. The numbers are
the same as on main display. The former pump calibration procedure has been dropped
out. We claim that calibration is not needed in routine clinical use, so a separate Flow
calibration menu is not needed. Calibration can be done with the pump or spirometry tester.
The results must be taken from the screen and gains adjusted accordingly.
•
VCO
2
and VO
2
Gain shows a value near 1000, the correct gains have been measured in the
factory.
•
Y deadspace is the geometric volume in ml between the Y-piece and the D-lite. Default is 5
ml for a standard Y-piece (as delivered with Siemens 900C ventilators). Used for VCO
2
and
VO
2
delay time corrections.
•
Set N
2
injection to 1 during laboratory tests with a Spirometry tester and injection of N
2
gas
(for scientific validations use only). At power on of the module, the value is always zero.
•
Ambient pressure
