Siemens SITRANS LR200 Manual De Instrucciones página 6

1)
Installation
WARNINGS:
• Installation shall only be performed by qualified personnel and in
accordance with local governing regulations.
• 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:
• The Process Device Tag shall remain with the process pressure boundary assembly
the event the device package is replaced, the Process Device Tag shall be transferred to
the replacement unit.
SITRANS LR200 units are hydrostatically tested, meeting or exceeding the requirements
•
of the ASME Boiler and Pressure Vessel Code and the European Pressure Equipment
Directive.
Installation guidelines
• Provide easy access for viewing the display and programming via the hand programmer.
• Provide an environment suitable to the housing rating and materials of construction.
• Provide a sunshield if the device will be mounted in direct sunlight.
Nozzle design
Notes:
• For nozzles 100 mm (4") in length or shorter use the 100 mm (4") shield.
• For nozzles 250 mm (10") in length or shorter use the 250 mm (10") shield.
• For details on other applications, please see the full manual.
• The end of the shield section should protrude a minimum
of 10 mm (0.4") to avoid false echoes being reflected from
the nozzle.
Location on a manhole cover
• A manhole cover is typically a covered nozzle with a
diameter 610 mm (24") or greater.
• For optimum signal conditions, locate the antenna
off-center, typically 100 mm (4") from the side.
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 emitter,
but normally excluding the electrical enclosure.
7ML19985XD81 SITRANS LR200 (PROFIBUS PA) – QUICK START MANUAL
shield
100 mm
(4")
Page EN-5
1)
. In
10 mm
(0.4")