Nozzle Design - Siemens SITRANS LR250 (HART) Manual De Inicio Rápido

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 and Flanged encapsu-
lated antennas. Any damage to the antenna surface, particularly to the tip/
lens, 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.
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 50 mm (2").
• An antenna extension (100 mm/ 3.93") is available for any version except the Threaded
PVDF and the Flanged encapsulated antenna (FEA).
• The maximum nozzle length for the FEA is 500 mm (20").
1)
Not applicable for FEA
A5E31997170
Stainless steel horn
antenna
1)
.
SITRANS LR250 (HART) – QUICK START MANUAL
Flanged encapsulated
antenna
min.
clearance:
10 mm (0.4")
min. dia.
50 mm (2")
max. nozzle
length:
500 mm (20")
Page EN-7