Installation
FLOWSIC100 Flare · Addendum to Operating Instructions · 8025365/V1-0/2020-05 · © SICK Engineering GmbH 55
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 measuring device
(maximum tolerance ±1 mm), → Fig. 32.
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 where the required space
for the duct probe is provided inside (diameter and length of the set wetted part
length wL).
– As an alternative, screw the threaded bolts/screws slip-proof in the through-holes of
the retraction nozzle. Position a suitable bend-proof rod between the threaded bolts/
screws for counterholding. Make sure the duct probe and the flange sealing surface
are not damaged.
Fig. 33 Securing the sender/receiver unit (example)
4 First tighten the self-cutting ring fitting hand-tight.
5 Tighten the self-cutting ring fitting 1.25 turns.
Counter with a jaw wrench on the pipe screw fitting.
6 Mark the position of the self-cutting ring fitting, → Fig. 32.
7 Completely loosen the pipe screw fitting.
8 Loosen the cap nut again and fully retract the sender/receiver unit for transport to and
installation into 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; on cross-duct versions both sender/receiver units must be
replaced.
Before tightening the self-cutting ring make sure 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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