VEGA VEGAPULS 45 Profibus PA - Manual (Page 26)

26 VEGAPULS 42, 44 and 45 – Profibus PA
24908-EN-041227
Inflowing material
Do not mount the instrument in or above the
filling stream. Ensure that you detect the
product surface and not the inflowing mate-
rial.
Buildup
If the sensor is mounted too close to the
vessel wall, product buildup and other de-
posits on the vessel wall cause false echoes.
Position the sensor at a sufficient distance
from the vessel wall. Please also note chapter
"3.1 General installation instructions“.
Buildup
Correct Incorrect
Inflowing material
Correct Incorrect
Mounting and installation
Vessel installations
Vessel installations, such as e.g. ladders,
often cause false echoes. Make sure when
planning your measuring location that the
radar signals have free access to the meas-
ured product.
Struts
Struts, like other vessel installations, can
cause strong false echoes that are superim-
posed on the useful echoes. Small baffles
effectively prevent direct false echo recep-
tion. These false echoes are scattered and
diffused in the surrounding space and are
filtered out as "echo noise“ by the measuring
electronics.
Vessel installations
Correct Incorrect
Ladder
Ladder
Struts
Correct Incorrect
Shields