Installation; Mounting Location - Siemens sitrans LR 400 Instruction Manual

Installation

Notes:
• 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
Provide a warning sign and/or touch guard if the surface of the
measuring instrument can become hotter than 70 °C (158 °F) in use.
WARNING:
• Improper installation may result in loss of process pressure.

Mounting Location

Recommendations
• Position device with easy access for viewing display and programming via handheld
programmer.
• Mount device in an environment suitable to the housing rating and the materials of
construction.
• 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.
Precautions
• Do not mount in direct sunlight without the use of a sun shield.
Warning: Internal temperature
must not exceed 85 °C (185 °F)!
• Avoid proximity to high voltage or current wiring, high voltage or current contacts,
and to variable frequency motor speed controllers.
• Avoid interference to emission cone from obstructions or from fill path.
• Avoid central locations on vessel.
7ML19985JC02 SITRANS LR 400 (Solids) – INSTRUCTION MANUAL
Appendix III
on page 92.
flange
temperature
ambient temperature
65 °C (149 °F) max.
internal enclosure
temperature
hand
programmer
process temperature
Page 11