Mounting Instructions; Mounting: Threaded Version - Siemens SITRANS LR250 Instruction Manual

Mounting Instructions

Notes:
• The device can be rotated past 360° without damage. When mounting, rotate the
head so the polarization dot faces the closest wall. In stilling well applications, line
up the polarization dot with the vent hole.
• Do not rotate the enclosure after programming and vessel calibration, otherwise an
error may occur, caused by a polarity shift of the transmit pulse.

Mounting: Threaded Version

1. Before inserting SITRANS LR250 into its mounting connection, check to ensure the
threads are matching, to avoid damaging them.
2. Simply screw SITRANS LR250 into the process connection, and hand tighten, or use
a wrench. For pressure applications, it will be necessary to use PTFE tape (or other
appropriate thread sealing compound) and tighten the process connection beyond
hand tight.
You can use 1.5" or 2" threaded process connections. There are three thread types: NPT,
BSP , and G.
316 S.S.
PTFE
A torque of
3. If you want to rotate the enclosure, use a 2 mm Allen key to loosen the set-screws
that secure the locking ring.
4. Once the enclosure is in a suitable position, tighten the set-screws. .
WARNING: For pressure applications, it will be necessary to use
PTFE tape or other appropriate thread sealing compound, and to
tighten the process connection beyond hand-tight.
7ML19985JE01
GRAPHIC TO BE UPDATED
40 N-m (30 ft.lbs) is recommended
SITRANS LR250 (HART) – INSTRUCTION MANUAL
min. I.D. 100 mm (4")
Max. nozzle height 100 mm (4")
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