ARES-G2 Getting Started Guide
Page 25
LN2 Cooler
CAUTION: The bulk tank must be a low pressure (22 psi/1.5 bars) source, as a high pressure tank
will damage the LN2 Controller.
MISE EN GARDE: Le réservoir en vrac doit être une source de basse pression (22 psi / 1,5 bar), vu
qu'un réservoir haute pression endommagerait le régulateur LN2.
NOTE
: For LN2 Cooler installation instructions, refer to TRIOS software online Help.
The LN2 cooler uses liquid nitrogen to extend the lower range of the FCO to
–
150°C. The LN2 cooler is
connected between an external liquid nitrogen source and the ARES-G2 test station. Controlled by the
oven supply enclosure through the software, the LN2 cooler consists of a Dewar flask, a solenoid valve to
control liquid nitrogen flow into the Dewar, and hardware to control the boiling of the liquid nitrogen to
produce cold nitrogen gas within the flask. A second solenoid valve controls the flow of the nitrogen gas
out of the Dewar flask for use by the test station, and a third solenoid valve allows air to escape while the
flask is filling.
Figure 12
LN2 Cooler
Table 2:
LN2 Cooler Specifications
Dewar Flask
A Dewar flask is a container specifically designed to efficiently store liquid nitrogen. Dewar flasks help
prevent evaporation due to their double-wall construction. Within the Dewar flask, a heater immersed in
the LN2 provides controlled boiling. The Dewar is equipped with two pressure relief valves to allow
excess nitrogen gas to vent when the LN2 Controller is turned off.
Additional details on the installation and operation of the LN2 cooler can be found in TRIOS online help.
Dimensions
28 cm (11 in) W x 24.1 cm (9.5 in) D x 55.9 cm (22 in) H
Weight
17.3 kg (38 lbs)
Temperature Range
Extends lower range of oven to –150°C
