User's Guide _______________________________________________________________________ 
176  __________________________________________________________________ M211107EN-C 
NOTE 
The tape stripes on the mask pla
tes should be placed against the glass 
plates to prevent the plates from scratching the glass plates.
 
 
3.  Move away from the optical path. 
4.  Give the CALIBRATE CHECK command. The command takes 
about 90 seconds to complete. 
5.  If the value produced by the check command is more than 85% of 
the value recorded without the mask plates, the mechanical 
alignment is correct. If this is not the case, check the FS11P sensor 
and the calibrator for electronic or mechanical faults. Also consult 
your local Vaisala representative. 
6.  Disassemble the calibrator and store it into the supplied carrying 
case. 
7.  Replace the plastic protective plate onto the calibrator assembly 
seating surface on the measurement unit. 
 
  0201-078 
Figure 49  Installing Mask Plates onto Opaque Glass Plates