Honeywell Krom Schroder DG H Series, Operating Instructions Manual

Page: 4 / 8

GB-4
D
GB
F
NL
I
E
Negative 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
–
–
Negative 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
–
–
Wiring
▷
If the DG..G has switched a voltage > 24 V and
a current > 0.1 A at cos φ = 1 or > 0.05 A at
cos φ = 0.6 once, the gold plating on the con-
tacts will have been burnt through. It can then
only be operated at this power rating or higher
power rating.
▷
Pressure switch DG can be used in Zone 1
(21) and 2 (22) hazardous areas if an isolating
amplifier is installed upstream in the safe area
as “Ex-i” apparatus pursuant to EN 60079-11
(VDE 0170-7):2012.
▷
DG as “simple electrical apparatus” pursuant to
EN 60079-11:2012 corresponds to the Tempera-
ture class T6, Group II. The internal inductance/
capacitance is Li = 0.2 μH/Ci = 8 pF.
CAUTION
To ensure that the DG is not damaged during opera-
tion, note the switching capacity, see page 7
(Technical data).
▷
In the case of low switching capacities, such as
24 V, 8 mA, for example, we recommend using
an RC module (22 Ω, 1 μF) in air containing
silicone or oil.
NO
C = 1 µF R = 22
2
NC
1
COM
3
1 Disconnect the system from the electrical power
supply.
M16 x 1,5:
ø 4–10 mm
3 4 2
5 6 7
▷
Contacts  and  close when subject to increas-
ing pressure. Contacts 1 and  close when sub-
ject to falling pressure.
COM
3
NC
1
NO
2
NO
2
NC
1
COM
3
L1
DG 1,5I and DG 1I
▷
The connection of DG 1,5l and DG 12l depends
on the positive or negative adjusting range.
DG 12I DG 1,5I
-12
-1
1
-1
0
-
9
-
8
-7
-6 -5
-4 -3
-
2
-
1
1
2
3
4
5
6
7
100 Pa
= 1
m
ba
r
ps
=
-12
– -
1;
1
–
7
m
ba
r
-1
,5
-1
-0
,5
0,5 1
1
,5
2
2
,5
3
p s
=
-1
,5
–
-0
,5
; 0
,5 –
3 mbar
1
00
Pa
= 1
m
bar
. .
. .
. .
. .
. .
. .
. . .
. . . . . . . . .
.
. .
.
.
.
.
.
.
.
.
.
.
. .
▷
In the negative adjusting range, the template
which can be found in the unit displays the con-
nection diagram.
NC
1
COM
COM
N
3
3
NO
2
NC
1
NO
µ
2
▷
In the positive adjusting range, remove the tem-
plate and wire the unit as shown in the engraved
connection diagram.
NO
2
NC
1
COM
3