Burkert 8201 Manuel Utilisateur page 12

3.2 Mounting the various adaptation sets
Fig 4: Example for mounting adaptation set EHEDG
DN30
Procedure for mounting a DN25, DN30, VARIVENT® adaptation set and others (see Fig 4)
One adaptation set for the process fittings mentioned above consists of
•
a screwed adapter (M20) in stainless steel including 4 threaded extension pieces in stainless
steel M3,
•
two PTFE reinforcement rings,
•
a spacer tube in stainless steel,
•
one O ring 10 x 2.5 EPDM,
•
a union nut in stainless steel,
•
an adapter in stainless steel with corresponding sealing ring for the specific process fitting.
a) Mount screwed adapter M20 on the pH sensor using the 4 threaded extension pieces.
b) Push the PTFE reinforcement ring to the middle of the sensor head (mounting phase 1).
c) Push the spacer tube onto the sensor. Take care to ensure that the spacer tube is attached on the
flank of the reinforcement ring. Now push both parts up to the screwed adapter
(mounting phase 2).
d) Push up the second reinforcement ring and press it into the spacer tube.
e) Attach the 10 x 2.5 O ring and roll it beneath the reinforcement ring (mounting phase 3).
f) Attach the union nut to the adapter anchorage and carefully push the adapter
onto the sensor (mounting phase 4).
g) Hold the adapter secure and tighten the screwed adapter sturdily (mounting phase 5). Once the O
ring is sufficiently pre-tensioned the gap (see Fig 5) is now closed.
The sensor is now ready to be installed.
Procedure for mounting an adaptation set on Type 8200 connection fittings
The adaptation set for Type 8200 connection fittings consists solely of one screwed adapter
(PG13.5) with 4 M3 threaded extension pieces and one O ring.
a) Mount screwed adapter PG13.5 on the pH sensor using the 4 M3 threaded extension pieces.
e) Attach the 10 x 2.5 O ring and roll it beneath the screwed adapter.
The sensor is now ready to be installed.
10- 8201
Fig 5: Gap with O ring