Penlon AV-S, Service Manual, Page: 24 / 94

3.5.4 Output Compensation
Functions
WARNING
The AV-S automatically compensates for fresh
gas (spirometry On), fresh gas mixture
(spirometry and oxygen monitor On), and
altitude.
However, the actual tidal volume delivered to the
patient may be different to the ventilation
parameters set by the user, due to:
A) an extreme compliance condition,
B) a substantial system leak,
C) patient circuit pressure effects, or
D) extreme fresh gas flows
In addition, high fresh gas flows will lead to an
increased Vt being delivered to the patient.
The patient must be monitored independently
from the ventilator.
It is the responsibility of the user to monitor the
patient for adequate ventilation.
Fresh Gas Compensation
Adjusts delivered volume up to 60%
Alarms if measured volume is 50% different
than set volume
User adjustable
NOTE
Fresh gas compensation is disabled if :
a) The spirometry system is turned OFF through the
menu system, or
b) The spirometry system is not functioning correctly.
Fresh Gas Mixture Compensation
- models with Spirometry
The spirometry system compensates for fresh gas
mixture - the user must access the menu system and
select the gas mixture that will be used for each
clinical procedure.
NOTE
Fresh gas mixture compensation is disabled if :
a) The spirometry system is turned OFF through the
menu system, or
b) The spirometry system is not functioning correctly.
If the O2 monitor is switched OFF, a 40%/60%
mixture of O2/N2O is assumed.
Altitude Compensation
Monitors ambient pressure
Adjusts delivered volume accordingly
DESCRIPTION
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