Operation
38 Agilent Cary 600 Series FTIR Spectrometers and Microscopes User’s Guide
b Reach through the hole and remove the liquid nitrogen
Dewar plug.
c 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.
d Allow about 20 minutes for the Dewar to come to thermal
equilibrium.
e Top up the Dewar with about 200 milliliters (7 ounces) of
liquid nitrogen.
f Replace the plug.
g Lower the spectrometer cover.
3 Turn on the computer and monitor.
4 If you are setting up your spectrometer or if you change the
spectrometer detector, beamsplitter, or source, you must
configure the hardware before you can collect any data. If your
hardware is already configured, you are ready to collect data.
Microscope
CAUTION
This procedure applies to detectors requiring liquid nitrogen. Most microscopes
are supplied with MCT detectors which require nitrogen cooling. Always check
the detector type and cooling requirements before performing this procedure.
To fill the microscope Dewar with liquid nitrogen:
1 Turn on the microscope power switch located on the rear of the
microscope.
2 Remove the appropriate liquid nitrogen Dewar plug. This plug is
easily removed by hand.
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