Chapter 6 _______________________________________________________________ Maintenance
VAISALA _______________________________________________________________________ 131
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 FS11 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 42 Installing Mask Plates onto Opaque Glass Plates
FSM102 Guided Calibration Procedure
As an alternative to the calibration procedure described above, the
calibration can be carried out interactively, guided by instructions by the
FS11 software, as described below.
The Guided Calibration Procedure is a combination of three individual
steps, and requires the FSA11 Calibration Kit.
- The first step verifies that the transmitter and receiver windows have
been cleaned.
- During the second step the system Offset Signal is verified.
- In the third step the opaque glass plates are installed to the
measurement unit to simulate a defined scatter signal in order to check
or adapt the visibility calibration.
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