Atlas XENOTEST 150 S+, Руководство по эксплуатации

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Operating Instructions Xenotest
®
150 S+
26
5.6 Misting and humidification functions
The misting and humidification function of the Xenotest
®
150
S+ allows the samples to be tested in the test chamber under
clearly defined climatic conditions.
• The humidification function allows the relative humidi-
ty in the test chamber to be regulated. The adjust-
ment range is between 10 % and 95 %. The test
chamber is humidified by means of an aerosol-free ul-
trasonic atomizer.
• The misting function allows the samples to be wetted
with treated water applied without pressure at cyclic
intervals. The misting wand distributes the water over
the samples.
Fig. 15: The misting and humidification system is supplied
from a water reservoir
4
inside the instrument.
The level in the water reservoir is monitored by a float val-
ve
7
. A solenoid
6
reports a low water level to the program
controller.
A submersion pump
5
in the water reservoir provides the
humidification system
8
with water. A misting pump
2
pumps the water for spraying the samples through the mis-
ting line to the misting wand
1
.
The water is returned to the water reservoir via a return line
9
.
The water reservoir can be drained through an outlet con-
nection
3
.
Note - Fresh water supply:
If the samples separate particles during
tests with spraying and if the cleanliness
of the water is a test criterion, the
spraying and humidification system can
be connected to an external water circula-
tion (see also Section 3.4, Water supply).
The water return is then connected to the
sewage system (gravity drain).
The instrument-integral water reservoir is
supplied with permanently fresh, treated
water from a water treatment facility or
from an external tank.
5 Functional description
Fig. 15