Vaisala FS11, Руководство пользователя

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USER'S GUIDE ____________________________________________________________________
128 __________________________________________________________________ M211187EN-C
FSM102 Calibration Check Procedure
The calibration check procedure is performed as follows:
1. Clean the windows following the instructions in section Cleaning
FSM102 Windows on page 125 and check the condition of the
calibrator glass plates, cleaning them also, if necessary.
2. In order to block the light path, install the zero plugs on both
receiver and transmitter optics (see Figure 40 below).
0201-076
Figure 40 Installing Zero Plugs
3. Give the OPEN command and go to the advanced level by giving
command LEVEL 1 .
4. Give the
CALIBRATE CHECK
command. The value produced
by the check command must be within the range of ± 0.0001. If it is
not, there may be a hardware error.
5. Assemble the opaque glass plates as shown in Figure 41 on page
129. Secure the glass plates in place by sliding them under the
thumbscrews and tightening the screws. Note the signal value
printed on the scattering plates because it is needed during the
following steps. Remove the zero plugs from the receiver and
transmitter optics.
NOTE The opaque glass plates are not interchangeable.
6. Remove the plastic protective plate from the seating surface (3 in
Figure 41 on page 129) of the calibrator assembly on the
measurement unit.
7. Install the calibrator assembly on the measurement unit as shown in
Figure 41 on page 129.
8. Move away from the optical path.