Cooling The Detector - Thermo Scientific NICOLET FT-IR User Manual

Cooling the detector

Warning
2. Attach the "ground" and "start collection" wires to the
remote start connector supplied by the manufacturer of your
TGA furnace.
For more information about the remote start connector for your
TGA furnace, contact the manufacturer or see the manufacturer's
documentation.
3. Attach the remote start connector to the remote start
interface on your TGA furnace.
For more information about connecting the remote start cable to
your TGA furnace, contact the manufacturer or see the
manufacturer's documentation.
If you are using an mercury-cadmium telluride (MCT) detector, you
must cool it with liquid nitrogen before you can collect data. This
procedure should take 40 minutes or less, and you will need the
following equipment:
•
Protective clothing and eyewear
•
A small plastic laboratory funnel
•
A one-liter, metal vacuum bottle
•
Liquid nitrogen
Liquid nitrogen is extremely cold and therefore potentially hazardous.
When filling the detector dewar, be careful not to contact the liquid
nitrogen with your skin. Wear protective gloves, goggles, and a splash
shield, and follow standard laboratory safety practices.
TGA-IR Module User's Guide 17