Siemens SITRANS LR250 Guide Rapide page 6

Pressure Equipment Directive, PED, 97/23/EC
Siemens Level Transmitters with flanged, threaded, or sanitary clamp type process mounts
have no pressure-bearing housing of their own, and therefore do not come under the Pressure
Equipment Directive as pressure or safety accessories (see EU Commission Guideline 1/8 and
1/20).
Installation
WARNINGS:
• Installation shall be performed only by qualified personnel and in
accordance with local governing regulations.
• Handle the device using the enclosure, not the antenna or the process
connection tag, to avoid damage.
• Take special care when handling the threaded PVDF antenna. Any damage
to the antenna surface, particularly to the tip, could affect performance.
• Materials of construction are chosen based on their chemical compatibility
(or inertness) for general purposes. For exposure to specific environments,
check with chemical compatibility charts before installing.
Notes:
• For European Union and member countries, installation must be according to ETSI EN
302372.
• Refer to the device nameplate for approval information.
• The serial numbers stamped in each process connection body provide a unique
identification number indicating date of manufacture.
Example: MMDDYY – XXX (where MM = month, DD = day, YY = year, and XXX= sequential
unit produced)
• Further markings (space permitting) indicate flange configuration, size, pressure class,
material, and material heat code.
Nozzle design
Threaded PVDF Antenna
min. clearance:
10 mm (0.4")
Min. dia. 50 mm (2")
• The end of the antenna must protrude a minimum of 10 mm (0.4") to avoid false echoes
being reflected from the nozzle.
• Minimum recommended nozzle diameter for the threaded PVDF antenna is 51 mm (2").
• An antenna extension (100 mm/ 3.93") is available for any version except the threaded
PVDF antenna.
7ML19985XN82 SITRANS LR250 (FF) – QUICK START MANUAL
Stainless Steel Horn Antenna
min. clearance:
10 mm (0.4")
Page EN-5