Siemens SITRANS LG270 Operating Instructions Manual page 22

Profibus pa rod and cable probe
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Fixing facility
Lateral installation
22
1
2
Fig. 12: Fasten the probe
1
Measuring probe
2
Retaining sleeve
If there is a risk of the cable probe touching the vessel wall during
operation due to product movements or agitators, etc., the measuring
probe can be strained.
For this purpose there is an internal thread (M12 or M8) in the gravity
weight.
Make sure that the probe cable is only hand tight. Avoid strong tensile
loads on the cable.
Keep in mind that measurement is only possible up to the tensioning
component. For this reason, order the cable probe 270 mm longer.
L = L1 + 270 mm (10.63 in)
ø < 8 mm
(ø < 0.315")
Fig. 13: Tensioning component for cable versions
1
Holding screw M8
2
Holding screw M12
L1 Max. measuring length
Probe length L = L1 + 270 mm (10.63 in)
In case of difficult installation conditions, the probe can also be
mounted laterally. For this, adapt the rod with rod extensions or
angled segments.
To compensate for the resulting changes in signal runtime, let the
instrument determine the probe length automatically.
The determined probe length can deviate from the actual probe
length when using curved or angled segments.
If internal installations such as struts, ladders, etc. are present on the
vessel wall, the measuring probe should be mounted at least 300 mm
(11.81 in) away from the vessel wall.
SITRANS LG270 - Operating Instructions
1
2
1
M8
M12
2
550 mm
(21.65")
PBD-51041506

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