Siemens sitrans LR 400 Instruction Manual page 15

WARNING: For vessels with conical or parabolic tops, avoid
mounting the unit at the center.
echoes into the centre, giving false readings.
Parabolic or Conical
P a r a
Beam Width
Page 12 SITRANS LR 400 (Solids) – INSTRUCTION MANUAL
Flat
b o l i c
is acceptable
is preferred
location
location
Keep the emission cone
free of obstructions.
2" horn
17°
3" horn
11°
4" horn
8°
The concavity of the top can focus
l F t a
7ML19985JC02