User guide

EDS - RK90R - OPTICAL BEAM SMOKE DETECTOR - USER GUIDE
11
7 - OPTICAL ALIGNMENT
7.1 - proceed with the optical alignment of Transmitter TX and Receiver RX.
To facilitate the operation we suggest to do it in low ambient light conditions and to proceed in the
following way:
• place in front of the Receiver (fig.3) an optical alignment lamp able to project a concentrated and
sufficiently intense light beam. (we recommend the EDS alignment lamp LAL02)
• direct the light beam of the lamp to the lenses of the Transmitter
• look at the screen that is behind the lens, inside the Transmitter. On it you will see a bright point that
represents the image of the lamp
• move the optical block using her special screws V1-V2-V3 with a key, so that the bright point falls in
the center where a small hole is present through which the photodiode is visible (fig.4).
It’s important that the bright point falls on the photoemitting zone of the photodiode.
This zone is represented by the small dark dot in the center of the photodiode. In such way the TX will
be alligned with the RX.
After doing the optical alignment of the Transmitter it is necessary to do the optical alignment of the
Receiver.
To do that you have to repeat the operations previously described in this paragraph.