Installation FLSE100-XT
FLOWSIC100 Flare-XT · Operating Instructions · 8023761/V 1-0/2020-10 · © SICK Engineering GmbH 69
Proceed as follows to set the wetted part length and to tighten the self-cutting ring:
1 Loosen the pipe screw fitting.
The pipe screw fitting is screwed hand-tight at the factory. Loosen the pipe screw fitting
completely to set the wetted part length.
2 Set the calculated wetted part length wL and check with a length gauge (maximum
tolerance: ±1 mm ), → Fig. 35
.
3 Screw in the pipe screw fitting and tighten with a torque of 150 Nm. Secure the sender/
receiver unit in a suitable manner, e.g.
– Screw the retraction nozzle to a suitable flange connection that provides the space
required inside for the duct probe (diameter and length of the set wetted part length
wL).
– Alternatively, install threaded bolts/screws in the through-holes of the retraction
nozzle to prevent slipping. Position a suitable rigid rod between the threaded bolts/
screws for countering. Ensure that the duct probe and the flange sealing surface are
not damaged.
Fig. 36 Securing the sender/receiver unit (example)
4 First tighten the self-cutting ring fitting hand-tight.
5 Now tighten the self-cutting ring fitting tight 1.25 turns.
Counter with a jaw wrench at the pipe screw fitting.
6 Mark the self-cutting ring fitting position, → Fig. 35.
7 Completely loosen the pipe screw fitting again.
8 Loosen the cap nut again and fully retract the sender/receiver unit for transport and
installation in the pipeline.
NOTICE: Damage due to incorrect position of the self-cutting ring
The position of the self-cutting ring cannot be changed after tightening! If the
self-cutting ring is tightened in the wrong position, the sender/receiver unit
must be replaced; for cross-duct versions both sender/receiver units must be
replaced.
Before tightening the self-cutting ring, make sure that the wetted part length
has been calculated correctly:
▸
Check the measured values.
▸
Check that the wetted part length is plausible compared with nozzle length
and ball valve length.
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