Instructions for use Isolette 8000 plus SW 5.n 179
Principles of operation
Example: The lower the air temperature setting, the lower the set point for relative
humidity. If the air temperature is increased, the relative humidity is increased
correspondingly.
16.4.1.2 Manual humidity
The user sets the relative humidity level manually according to the patient's needs.
A value between 30 % and 95 % relative humidity (RH) can be set in 1%
increments.
16.4.2 Humidifier
The humidifier is a three-part system consisting of a water reservoir assembly, a
humidifier, and a heater/impeller cover with duct cover.
16.4.2.1 Water reservoir assembly
The water reservoir assembly consists of a water reservoir in the front, a humidifier
chamber in the back, and a cover with a water filling inlet. The reservoir has a 1.5-
liter capacity and permits visual inspection of the water level. It slides in like a
drawer in the front of the incubator shell. When the reservoir assembly is fully
inserted into the shell and the latch is engaged, the reservoir connects to a duct that
directs the flow of humidified air into the heater well. If the water reservoir is empty
or not fully inserted in the incubator shell, an acoustic and optical
Check Water Supply alarm occurs.
16.4.2.2 Humidifier
The water enters the humidifier chamber at the back of the reservoir. The humidifier
raises the temperature of the water to the boiling point, causing vaporization. No
waterborne bacteria are introduced into the patient compartment by the
vaporization process.
105
Automatic closed-loop humidity control
Set value for air temperature [°C]
Set value for relative humidity [% r.h.]
100
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60
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