Vaisala CT25K - Replacement; Figure 8-6 Removing the Optics Monitor

Ceilometer CT25K
CT25K-U059en-2.1 User’s Guide
115
Figure 8-6 Removing the Optics Monitor
8.7.2 Replacement
To replace Optics Monitor CTL21:
1. Fasten the Optics Monitor CTL21 to the Ceilometer with two screws
(Figure 8-6). The previous horizontal position of the CTL21 is a good
estimate of the correct position. (The Sensor Arm of the Optics Monitor
should be about in the middle of the lens.)
2. Attach the ribbon cable connector to the CTL21.
3. Connect the Power Cable and the Maintenance Terminal. Turn the power
on.
4. If the Optics Monitor has been replaced or the horizontal position of it has
been changed, do the following:
a) Do the parameter settings for the Laser Transmitter CTT21 as
described in Paragraph 8.4.2, Steps 4 a) - j), finishing with the
Internal Crosstalk Compensation (Paragraph 8.4.3).
b) Do the parameter settings for the Receiver CTR21 as described in
Paragraph 8.5.2 Steps 7 c) - h). It is not necessary to adjust the
Internal Crosstalk Compensation again.