Threaded Versions - Siemens SITRANS L Series Compact Operating Instructions

Installing/mounting
4.4 Installation instructions
Improper installation
Danger to personnel, system and environment can result from improper installation.
● Installation shall only be performed by qualified personnel and in accordance with local
NOTICE
Device handling
Damage to device may result from improper handling.
● Handle the device using the enclosure, not the process connection or tag, to avoid damage.
● Take special care when handling the threaded PVDF and Hygienic or Flanged
Note
● For European Union and member countries, installation must be according to
ETSI EN 302372.
● Refer to the device nameplate for approval information.
Note
Do not remove the PTFE or polypropylene lens. It is a critical component for operation.
Note
The outer part of the lens on the PTFE flanged encapsulated antenna version may not appear
to lie flush before installation and this is normal. This will flatten after installation and will not
impact the performance of the device.
4.4.1

Threaded versions

Pressure applications
Danger of injury or poisoning.
It may be necessary to use PTFE tape or other appropriate thread sealing compound, and to
tighten the process connection beyond hand-tight. (The maximum recommended torque for
Threaded versions is 40 N-m (30 ft.lbs.)
24
WARNING
governing regulations.
encapsulated antennas. Any damage to the antenna surface, particularly to the tip/lens,
could affect performance. (For example, do not sit device on its lens antenna.)
WARNING
SITRANS LR250 with mA/HART
Compact Operating Instructions, 11/2019, A5E48453192-AA