Optional Equipment; Barrier Chamber System (Option Code Bc1, Bc2, Bc3) - Dellmeco DM 08/10 Instruction Manual

16. Optional Equipment

For special requirements DELLMECO pneumatic diaphragm pumps of the Plastic Series can be furnished with
several optional equipment. The pump code informs, which of these are included in the pump.

16.1. Barrier Chamber System (option code BC1, BC2, BC3)

To comply with high safety standards, the barrier system replaces the standard diaphragm [4] by a tandem
arrangement of two diaphragms [4, 59] and a barrier chamber [53, 54] of conductive PE filled with a non-conductive
liquid (de-ionized water) in between. To ensure the correct operation of the pump, the barrier chambers [53, 54] have to
be filled completely. Therefore, they are monitored by liquid sensors [60]. After loosening the plug [57] the barrier liquid
can be refilled. In case a diaphragm breaks, the conductivity of the barrier liquid rises which is registered by the
conductivity sensors [56]. The minimum conductivity of 22 µS covers a wide range of media. Otherwise, a conductive
barrier liquid can be filled into the chamber, so that the liquid emerging in case of a diaphragm rupture causes a
decrease in conductivity to be registered. After using for some time the de-ionized water can be polluted with germs. In
this case the water needs to be replaced.
The barrier system is available in three variations:
• BC 1 Barrier system with sensors, standard
• BC 2 Barrier system complete with sensors and controllers
• BC 3 Barrier system complete with sensors and controllers for explosion-proof zone
The four conductivity sensors [56] are pre-installed. After connection of the wire (wire not part of supply) only the
PG-threads have to be screwed onto. Both liquid sensors [60] are installed completely.
The sensors can either be connected to an existing controller (code BC1) or to the controller included (code BC2 /
BC3). The wiring diagram and technical data can be found on the controller itself. For further details, please refer to the
data delivered by the manufacturers of the components. The controllers have to be installed in a suitable cabinet.
Spare part list, barrier chamber system
Code Pos. Quantity
47
2
48
4 / 6* / 8**
49
1
50
2
51
2
52
1
53
1
54 2
55
2
56
4
57
2
58
2
59
2
60
2
61 2
-
1
-
1
-
1
-
1
Additional information to the operating and installation instructions
ought to be studied before installing the pump
Description
Suction / Discharge Ports
Barrier chamber housing bolt
Barrier chamber set screw shaft
Spacer
Spacer bolt
Left barrier chamber
Right barrier chamber
Sensor sleeve
Sensor sleeve o-ring
Conductivity sensor
Plug
Plug o-ring
Inner diaphragm
NAMUR liquid sensor
Liquid sensor o-ring
as BC1, but additionally contains:
Controller
Conductivity measuring trans.
as BC2, but for EExia II C:
Controller
Conductivity measuring trans.
Pump size: DM 10
Material Part no.
PE 2 10 32 20
PTFE 2 10 32 23
PE conductive 2 10 32 21
PTFE conductive 2 10 32 24
AISI 304 9 10 42 50
AISI 304 1 10 41 50
PET 1 10 63 30
AISI 304 1 10 43 50
PE conductive 2 10 02 21
PE conductive 2 10 102 21 2 15 102 21 2 25 102 21 2 40 102 21 2 50 102 21
PE 2 10 62 20
FKM 1 08 82 09
diverse 9 15 15 00
PA 1 15 48 40
FKM 1 15 74 09
EPDM 1 10 51 08
diverse 9 15 12 00
FKM 1 15 75 09
diverse 9 15 14 00
diverse 9 15 13 00
diverse 9 15 14 00
diverse 9 15 08 00
DM 15 DM 25 DM 40
Part no. Part no. Part no.
2 15 32 20 2 25 32 20 2 40 32 20
2 15 32 23 2 25 32 23 2 40 32 23
2 15 32 21 2 25 32 21 2 40 32 21
2 15 32 24 2 25 32 24 2 40 32 24
9 15 42 50* 9 25 42 50* 9 40 42 50** 9 50 42 50**
1 15 41 50 1 25 41 50 1 40 41 50
1 15 63 30 1 25 63 30
- -
2 15 02 21 2 25 02 21 2 40 02 21
2 15 62 20 2 25 62 20 2 40 62 20
1 08 82 09 1 08 82 09 1 08 82 09
9 15 15 00 9 15 15 00 9 15 15 00
1 15 48 40 1 15 48 40 1 15 48 40
1 15 74 09 1 15 74 09 1 15 74 09
1 15 51 08 1 25 51 08 1 40 51 08
9 15 12 00 9 15 12 00 9 15 12 00
1 15 75 09 1 15 75 09 1 15 75 09
9 15 14 00 9 15 14 00 9 15 14 00
9 15 13 00 9 15 13 00 9 15 13 00
9 15 14 00 9 15 14 00 9 15 14 00
9 15 08 00 9 15 08 00 9 15 08 00
31I DELLMECO I AODD DIAPHRAGM PUMPS
DM 50
Part no.
2 50 32 20
2 50 32 23
2 50 32 21
2 50 32 24
1 50 41 50
- -
- -
2 50 02 21
2 50 62 20
1 08 82 09
9 15 15 00
1 15 48 40
1 15 74 09
1 50 51 08
9 15 12 00
1 15 75 09
9 15 14 00
9 15 13 00
9 15 14 00
9 15 08 00