GB-3
D
GB
F
NL
I
E
DG..H, DG..N
p
S
= SK
p
S
= SK + 0.18 mbar p
S
= SK - 0.18 mbar
DG 1,5I
p
S
= SK
p
S
= SK + 0.4 mbar
e.g. SK = 1.2:
p
S
= 1.2 + 0.4 =
1.6 mbar
e.g. SK = -1.2:
p
S
= -1.2 + 0.4 =
-0.8 mbar
DG 12I
p
S
= SK
p
S
= SK + 0.5 mbar
e.g. SK = 5:
p
S
= 5 + 0.5 =
5.5 mbar
e.g. SK = -10:
p
S
= -10 + 0.5 =
-9.5 mbar
DG 18I, DG 120I, DG 450I
p
S
= SK
DG 18I:
p
S
= SK + 0.5 mbar
e.g. SK = -10:
p
S
= -10 + 0.5 =
-9.5 mbar
DG 120I, DG 450I:
p
S
= SK + 0.2 mbar
Connection facilities
2
1
3
4
1
and
2
Gas, air, flue gas
3
and
4
Air, flue gas
▷
Ports
and
4
are suitable for air and flue gas only.
▷
If the electrical contacts in the DG could be soiled
by dirt particles in the surrounding air or in the
medium, use a filter pad (see page 6 (Filter
pad set)) at port
/
4
. On IP 65 units, the filter pad
is fitted as standard, see type label.
1
Disconnect the system from the electrical power
supply.
Shut off the gas supply.
Ensure that the pipeline is clean.
4
Purge the pipe.
Installing DG..H, DG..N
Positive pressure measurement at port 1
5
Seal port
.
1
2
Rp 1/4
1
2
p
max
=
Rp 1/4
2
Rp 1/4
0
Positive pressure measurement at port
5
Seal port
1
.
1
2
Rp 1/4
1
2
p
max
=
Rp 1/4
2
Rp 1/4
0
Negative pressure measurement at port 4
5
Seal port
.
3
Rp 1/8
4
3
4
Rp 1/8
3
0
Negative pressure measurement at port
5
Seal port
4
.
3
Rp 1/8
4
3
4
Rp 1/8
3
0
Differential pressure measurement
▷
Use port
1
or
for the higher absolute pressure
and port
or
4
for the lower absolute pressure.
5
Seal the remaining ports.
1
3
3
1
Installing DG..I
▷
It is recommended that the port which is best
protected from dirt and water be left open.
