Sensor Reference Point; Nozzle Mounting - Siemens SITRANS LR500 Series Operating Instructions Manual

Installing/mounting
5.4 Nozzle mounting
5.3

Sensor reference point

The measuring range of LR500 series devices begins at the end of the sensor reference point.
The reference point is different depending on the sensor version.
①
②
③
④
⑤
When the LR550 is supplied with a flange, the sensor reference point is at the bottom of
1)
the flange.
5.4

Nozzle mounting

Nozzle location
• Avoid central locations on tall, narrow vessels
• Nozzle must be vertical and clear of imperfections
Place the mounting location of the radar sensor where no other equipment or fixtures
cross the path of the radar signals. Vessel installations, such as ladders, limit switches,
heating spirals, struts, and so forth, can cause false echoes and impair the material echo.
Ensure when planning your measuring point that the radar sensor has a " clear view" to the
measured product. In case of existing vessel installations, an auto false echo suppression
should be carried out during setup when the vessel is empty.
> 200 mm
40
LR510 threaded lens antenna
LR530 flanged encapsulated antenna
LR550 polymeric horn antenna
LR580 flanged lens antenna
Sensor reference point
(7.87")
1)
Operating Instructions, 03/2024, A5E51099898-AA
SITRANS LR500 series with mA/HART