Installing/mounting
4.4 Installation instructions
SITRANS LR250 with mA/HART
34 Operating Instructions, 10/2019, A5E32220602-AG
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
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.)
For European Union and member countries, installation must be according to
ETSI EN 302372.
Refer to the device nameplate for approval information.
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
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.)
1. Before inserting the device into its mounting connection, check to ensure the threads are
matching, to avoid damaging them.
2. Simply screw the device into the process connection, and hand tighten, or use a wrench.
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