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28 NIRvana
™
-LN System Manual Issue 4
4.3 System Requirements
This section provides general information about NIRvana-LN system requirements.
REFERENCES:
For detailed technical specification, refer to Appendix A,
Specifications , on page 95.
4.3.1 Ventilation
A NIRvana-LN system requires the following ventilation conditions:
•
Detector
Allow at least one inch clearance for side and rear air vents.
Where the detector is inside an enclosure, > 30 cfm air circulation and heat
dissipation of 50W is required.
•
Power Supply
Allow at least one inch clearance for side and rear air vents.
4.3.2 Coolant
WARNINGS!
1. Even minimal contact with LN can cause severe injury to eyes and
skin. Avoid contact with the splashing that will invariably
accompany pouring LN into a room temperature Dewar.
2.
Always be careful when removing the LN port cap if there is LN
present in the Dewar. Pressure due to nitrogen gas can cause the
cap to fly out when the retaining nut is loosened, possibly spraying
you with liquid LN, which can cause severe injury.
3.
An LN-cooled detector must never be tilted more than 30° from
vertical, unless the "all-directional" Dewar option has been
purchased. If mounting the Dewar to your system requires you to
exceed the 30° limit, you may have the wrong type of Dewar.
Contact the factory.
4.3.3 Detector Power
The NIRvana-LN detector receives its power from the power supply, which in turn plugs
into a source of AC power.
CAUTION!
!
The plug on the line cord supplied with the system should be
compatible with the line-voltage outlets in common use in the
region to which the system is shipped. If the power cord plug is
incompatible, a compatible plug should be installed, taking care
to maintain the proper polarity to protect the equipment and
assure user safety.