Agilent Technologies Cary 600 Series - Page 39

Operation
Agilent Cary 600 Series FTIR Spectrometers and Microscopes User’s Guide 39
Figure 14. Top of the microscope showing the liquid nitrogen plug
WARNING
Extreme Cold Hazard
Liquid nitrogen is very cold and can cause damage to the human body. Use
appropriate protective equipment when handling liquid nitrogen.
3 Carefully fill the detector Dewar with liquid nitrogen using the
provided funnel. This takes about 2.5 medium-sized Styrofoam
cups (475 milliliters, 16 ounces) of liquid nitrogen. Minimize
spills by adding half a funnel of liquid nitrogen at a time and
allowing it to cool down until the vapor plume dies down. Repeat
as required.
4 Allow about 20 minutes for the Dewar to come to thermal
equilibrium.
5 Top up the Dewar with about 200 milliliters (7 ounces) of liquid
nitrogen.
6 Replace the plug.