Siemens sitrans lr 460, Быстрый старт, Страница: 7 / 196

A5E32007360 SITRANS LR460 – QUICK START MANUAL Page EN-5
m
mmmm
Englis
h
Key considerations
• Nozzle design and nozzle location are critical to a successful application.
• Avoid reflective interference from vessel walls and obstructions by following the
guidelines below.
Nozzle design
Nozzle location
• Locate antenna at least 1 meter away from
side wall.
• Keep emission cone free of interference
from ladders, pipes, I-beams or filling
streams.
• Make allowance for beam spread to avoid
interference with the emission cone.
Device orientation
Align the antenna so that the radar cone is
perpendicular to the surface of the monitored
material, if possible.
Easy Aimer Installation
1. Holding the electronics enclosure firmly,
loosen the Easy Aimer ball locking bolts and
gently reposition the enclosure (see
Nozzle
design
above).
2. Direct SITRANS LR460 so the horn antenna
is pointed at an angle perpendicular to the material surface, if possible. (As a guide, aim
the beam at a point approximately 2/3 of the way across the tank diameter.)
3. When the desired position is reached, re-tighten the 5 bolts to 15-23 N m (11 to 17 Lbf-ft).
Note:
When the Easy Aimer ball is loosened,
the device is free to tilt to a maximum of 30°.
min. clearance
10 mm (4")
• Bottom edge of horn must project from nozzle.
• Nozzle must have adequate clearance to allow LR460 to be positioned at an angle (see
Device orientation
below).
30 °
10 mm (0.38")
top clamping plate
bottom
clamping plate
customer-
supplied gasket
285 mm
(11.22")
Easy Aimer
ball locking
joints
SITRANS LR 400 SITRANS L
R 400
min. 1 m (39")
emission
cone
4" horn
3"
horn
11°
8°
Easy
Aimer