Jenoptik VARIOSCAN high resolution Series Manual page 18

Installation
How to fill the Dewar flask with liquid nitrogen.
q Unscrew the sealing cap on top of the camera head.
q Use the provided funnel and an auxiliary vessel to fill the Dewar
flask slowly with nitrogen.
Note:
q First fill in only a little amount of nitrogen to avoid boiling over. Fill
the flask completely only, after it has cooled down sufficiently.
q Screw the cap onto the filling hole. With a fully charged Dewar flask,
you can work for about 10 hours.
Operating the camera
q Connect power supply unit to camera head or push charged video
battery pack into the battery compartment of the camera until the
lock snaps in.
q Turn power switch on camera back to I (VARIOSCAN 3021, 3022)
or II (VARIOSCAN 3021-ST), the indicator LED on the display
lights. During hardware initialisation the display remains dark.
This process takes about 15 s. Subsequently, the software is
initialised. The display shows a corresponding message.
q Switch position I on VARIOSCAN 3021 - ST means on standby for
the internal Stirling cooler. The integrated PC is not running in this
mode.
q If you want to work in the file system without online camera mode,
press the button at the bottom left.
q After initialisation, the camera is ready for taking thermograms.
q Direct the camera to a test object, for instance, a person.
q Wait until detector has cooled down (on Model 3021-ST up to five
minutes).
18