Siemens SITRANS TDL Compact Operating Instructions page 24

Installing/mounting
5.2 Installing process flanges
12. Again, use the provided
13. Next, proceed with adjustment of the emitter unit side by swapping places of the light
Note
It may be necessary to use a hood to increase the visibility of the spot by reducing the
ambient light intensity.
Note
If the alignment screws become loose, please tighten the screw with spring on the opposite
side of the flange.
The alignment procedure is completed when on the receiver and emitter sides, the light spots
are in the optimal aligning point of crosshair for particular analyzer. This alignment should be
valid even when the receiver and emitter units are mounted, dismounted or even when new
replacements are installed. However, it is advised to check the alignment prior to each
mounting.
24
Allen key to align the light
spot in the desired point
on the crosshair.The opti-
mal aligning point can be
found on the sticker under
the analyzer lid (both
emitter or receiver unit).
source and the aiming tool and starting from step 4 of the alignment procedure.
Finding the optimal aligning point. The optimal aligning point
depends on the device variant.
① Incorrect
② Correct
Target aligning point stickers
Compact Operating Instructions, 05\2023, A5E51659183-AA – revised 03/2024
SITRANS TDL