Thermo Scientific Heracell 150i, Руководство по эксплуатации, Страница: 45 / 156

Operating Instructions | HERAcell® 150i / 240i
4 Description of the device 4 Description of the device 4 Description of the device
45
50115191 A / 08.2009
of the openings are smaller when samples are
accessed.
4.10.3 Water reservoir
The water reservoir [1] is integral to the interior
container floor and inclines toward the rear. The water
level is monitored by a water level sensor [2] that
issues an alarm message at the display and an audible
signal when the water falls below the minimal level.
The embossings [3] in the water tray are used as
indicators for the maximal level.
4.10.4 Gas humidification (optional, only for O
2
control)
A hose [5] connects the gas humidification [6] to the
device-integral oxygen or nitrogen supply line [4]. The
inflowing oxygen or nitrogen is fed to the heated
water. This ensures humidification of the gases as
they enter the work space and prevents an undesired
drop of the work space humidity.
4.10.5 Heating system
An air jacket heating is used for heating the work
space. The arrangement of the heating elements
ensures that condensate formation above the water
reservoir is prevented as far as
possible.
The outer door of the device is also heated. The heat
radiated onto the interior glass door/gas-tight screen
prevents condensate formation. The work space of the
device always remains visible, despite high humidity.
Fig. 14: Water reservoir