Siemens SITRANS TDL Compact Operating Instructions page 21

Proper alignment is achieved when the focal spot is in the dedicated point of the fine aligning
piece crosshair. Point placement depends on the specific device. The crosshair with optimal
aligning point for particular system can be found on a sticker under the analyzer lids (receiver
or emitter lid).
Note
Please check whether the flange windows are clean before mounting alignment kit elements
or sensor units. Flange purging is recommended for every installation and should be
operational before installation of the flange on the process. This ensures that the windows
will remain clean during the installation of the flanges.
When releasing the clamp, hold the sensor unit to prevent it from falling!
1. Proceed to the receiver
2. Proceed to the emitter side of the instrument.
3. Remove the fine aligning
SITRANS TDL
Compact Operating Instructions, 05\2023, A5E51659183-AA – revised 03/2024
CAUTION
side of the instrument.
Switch on the light source
and verify that it is opera-
tional. Place the light
source into the sleeve of
the process interface.
piece from the aiming
tool. Place the light source
in the sleeve and switch it
on. Ensure the light source
is operational. Loosen the
screw on the side of the
aiming tool and slide the
fine aligning piece out.
Placing light source
Fine aligning piece
Installing/mounting
5.2 Installing process flanges
21