Siemens SITRANS LR250 Guide De Mise En Service Rapide page 8

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).
Installation
WARNINGS:
• Installation shall only be performed by qualified personnel and in accor-
dance with local governing regulations.
• Handle the device using the enclosure not 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 identifica-
tion 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. 51 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.
1)
The process pressure boundary assembly comprises the components that act as a barrier against
pressure loss from the process vessel: that is, the combination of process connection body and emit-
ter, but normally excluding the electrical enclosure.
Page EN-6 SITRANS LR250 (HART) – QUICK START MANUAL
Stainless Steel Horn Antenna
min. clearance:
10 mm (0.4")
A5E31997170
1)