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Wiring
CAUTION
To ensure that the DG..T is not damaged during op-
eration, note the switching capacity, see page 5
(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.
1 Disconnect the system from the electrical power
supply.
2
3
5
2
NO
½" NPT Conduit:
ø 0.4" (10 mm)
2
NO
3
1
COM
NC
▷ DG..FT, DG..NT: the NO-to-COM connection
is interrupted if the pressure drops (contacts 3
and 2 open).
DG..T, DG..HT: the NC-to-COM connection is
interrupted if the pressure rises (contacts 3 and
1 open).
Adjustment
▷ The switching point is adjustable via hand wheel.
1 Disconnect the system from the electrical power
supply.
2 Detach the housing cover.
▷ Tightening torques, see Technical Information
bulletin DG at www.docuthek.com.
3 Connect an ohmmeter.
NO
2
COM
2
NO
3
NC
1
4 Set the switching point using the hand wheel.
5 Connect a pressure gauge.
0
0.4" = 0.4"WC
4
1
3
NC
COM
½" NPT
1
3
NC
COM
0
0.4" = 0.4"WC
(1 cm = 1 mbar)
6 Apply pressure. In doing so, monitor the ohm-
meter and the pressure gauge.
Pressure switches without manual reset
(DG..T, DG..FT, DG..ST)
Adjusting
range*
Type
"WC
(mbar)
0.2 – 2.4
DG 6T
(0.5 – 6)
0.4 – 4
DG 10T
(1 – 10)
1 – 20
DG 50T
(2.5 – 50)
12 – 60
DG 150T
(30 – 150)
40 – 200
DG 500T
(100 – 500)
Pressure switches with manual reset
(DG..HT, DG..NT)
Adjusting
range*
Type
"WC
(mbar)
0.4 – 4
DG 10T
(1 – 10)
1 – 20
DG 50T
(2.5 – 50)
12 – 60
DG 150T
(30 – 150)
40 – 200
DG 500T
(100 – 500)
1)
Connect the venting line to port 4. Connections,
see page 2 (Installation).
* Adjusting tolerance = ± 15% of the scale value.
** Difference between switching pressure and pos-
sible reset.
▷ If the DG..T does not trip at the desired switch-
ing point, correct the adjusting range using the
hand wheel. Relieve the pressure and repeat
the process.
USA-3
Mean
Max. inlet
switching
pressure p
differential
psi (mbar)
at min.
and max.
No
With
setting
venting
venting
"WC
line
line
(mbar)
0.08 – 0.12
2.4 psi
(0.2 – 0.3)
(165)
0.1 – 0.16
(0.25 – 0.4)
0.4 – 0.8
8.5 psi
(1 – 2)
7 psi
(600)
1.2 – 2
(480)
(3 – 5)
3.2 – 6.8
(8 – 17)
Max. inlet
pressure p
Reset
psi (mbar)
pressure**
"WC
No
With
(mbar)
venting
venting
line
line
0.16 – 0.4
(0.4 – 1)
0.4 – 0.8
7 psi
(1 – 2)
8.5 psi
0.8 – 4.8
(600)
(480)
(2 – 12)
2 – 7.2
(5 – 18)
max.
1)
max.
1)
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