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NOTICE
!
For use with flammable gases, observe the
following:
− In potentially explosive atmospheres, the
ambient temperature must not exceed
+60 °C in the area surrounding the flame
arrester.
− The ambient pressure must be between 0.8
and 1.1 bar (absolute pressure).
− Observe EC type examination certificate
PTB 12 ATEX 4001 X (see section 12).
− Do not use flammable gases to supply the
indicating controllers with pressure.
Î
G½
Ø95
Fig. 9: Diaphragm seals for
general use
EB 7030 EN
On installing the Type 3430 Pneumatic Indi-
cating Controller with diaphragm seal, ob-
serve the following points:
Î To prevent gas migration into another
Î Plant operators must check for leakage at
G½B
Ø99
Fig. 10: Diaphragm seals for
use with oxygen
Design and principle of operation
zone, the attachment of the diaphragm
seal to the process must meet stringent
sealing requirements.
regular intervals.
A
Fig. 11: Diaphragm seals for
use with flammable
gases
10 mm
duct bore
G½B
Ø59
23
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