User's Manual

Page 18 SITRANS LR 400 – INSTRUCTION MANUAL 7ML19985FH04
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Installation
Installation
Mounting Location
• Do not mount in direct sunlight without the use of a sun shield. Refer to Appendix III
(Ambient/Operating Temperature Specification) on page 88.
• Mount the unit more than 1 m away from the vessel walls, pipes and other
assemblies as well as the filling stream, because all these influences will become
noticeable as reflective interference. Align the antenna so that the radar cone
intersects the surface of the measuring medium as vertically as possible
Notes:
• The SITRANS LR 400 is rated for Type 4X/NEMA 4X, Type 6/NEMA 6,
IP67. Follow all installation and operating instructions to meet the
requirements of this type of protection. Use only approved, suitable
sized hubs for watertight applications.
• Observe all maximum permissible ambient and process temperatures.
Refer to Appendix III (Ambient/Operating Temperature Specification).
Provide a warning sign and/or touch guard if the surface of the measuring
instrument can become hotter than 70 °C in use.
WARNINGS:
• This product is designated as a Pressure Accessory per directive
97/23/EC and is not
intended for use as a safety device.
• Improper installation may result in loss of process pressure.
WARNING: For vessels with conical or parabolic tops, avoid
mounting the unit at the center.
The concavity of the top can focus
echoes into the centre, giving false readings.
Flat
P a ra b o lic
SITRANS LR 400 SITRANS LR 400
S
IT
R
A
N
S
L
R
4
0
0
Parabolic or Conical
Flat
is preferred
location
is acceptable
location
Easy Aimer