Samson 430 Series, Mounting And Operating Instructions

Page: 23 / 78

EB 7030 EN 23
Design and principle of operation
Î
G½
39.5
Ø95
56 ±1
G½B
20
Ø99
109 ±2
41.5
G½B
20
Ø59
113 ±2
A
35
10 mm
duct bore
Fig. 9: Diaphragm seals for
general use
Fig. 10: Diaphragm seals for
use with oxygen
Fig. 11: Diaphragm seals for
use with flammable
gases
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.
On installing the Type 3430 Pneumatic Indi -
cating Controller with diaphragm seal, ob -
serve the following points:
Î
To prevent gas migration into another
zone, the attachment of the diaphragm
seal to the process must meet stringent
sealing requirements.
Î
Plant operators must check for leakage at
regular intervals.
NOTICE !