Mounting
ASD 535, Mounting and installation, T 140 333 d en
21 / 40
2.5.7.2
Transition to flexible tube
For equipment monitoring, the transition from rigid to flexible tube can be done in principle using any kind of fitting.
shows the parts that can be used.
For a rigid sampling pipe made of
PVC
, a
PVC threaded ring
with M20 internal thread is glued into the exit side of the fitting.
The M20 quick-release coupling is screwed into the threaded ring for the flexible tube.
If the rigid sampling pipe is made of
halogen-free ABS
, the procedure is identical to that for PVC. Instead of the PVC
threaded ring, however, a suitable
threaded ring made of ABS
is used.
The flexible tube can be easily snapped into the quick-release coupling, and for maintenance work it can be easily snapped
out.
Notices
•
It is imperative to implement the interfaces of the flexible tube “cleanly” so that the sealing ring does not be-
come damaged in the quick-release coupling.
•
When clicking in the flexible tube, make sure that the tube and quick-release coupling are pressed well
against each other to prevent wrong air from being sucked in.
For transitions from flexible tubes to sampling fixtures, proceed in the reverse order as described above.
Fig. 11 Transition from fitting to flexible tube
Transition from PVC or ABS fittings to flexible tube
Sleeve
Angle or
arc
or
or
T-piece
PVC or ABS
threaded ring,
M20
M20 quick-release
coupling
Flexible tube
Ø 16/21 mm
= glued (PVC or ABS glue)
= screwed
= snapped in
1
1
2
2
3
3
Summary of Contents for ASD 535
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