Installation Instructions - Siemens SITRANS LR250 Operating Instructions Manual

Device orientation
Bypass Installation
vent

Installation Instructions

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.
Notes:
• There is no limit to the number of times a device can be rotated without damage.
• When mounting, orient the front or back of the device towards the closest wall.
• Do not rotate the enclosure after programming and vessel calibration, otherwise
an error may occur, caused by a polarity shift of the transmit pulse.
Threaded Version
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. A torque of 40 N m (30 ft.lbs) is recommended.
Flanged Version
Flanged Horn dimensions
See
Flat Faced Flange
and
7ML19985KL01
align front or
back of
device with
vents
optimum
diameter
80 mm (3")
on page 14,
on page 16 for dimensions.
SITRANS LR250 (FF) – OPERATING INSTRUCTIONS
Stillpipe Installation
align front or back
of device with
stillpipe slots
Raised Face Flange per EN 1092-1
slots
on page 14,
Page 21