USA-3
USA
CAN
MEX
D
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.
½" NPT Conduit:
ø
0.4" (10 mm)
2
NO
1
NC
3
COM
½" NPT
2
NO
3
COM
1
NC
3
4
2
5
▷
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
NC
1
COM
3
COM
3
NC
1
NO
2
0
0.4" = 0.4"WC
(1 cm = 1 mbar)
4
Set the switching point using the hand wheel.
5
Connect a pressure gauge.
NO
2
NC
1
COM
3
COM
3
NC
1
NO
2
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)
Type
Adjusting
range*
"WC
(mbar)
Mean
switching
differential
at min.
and max.
setting
"WC
(mbar)
Max. inlet
pressure p
max.
psi (mbar)
No
venting
line
With
venting
line
1)
DG 6T
0.2 – 2.4
(0.5 – 6)
0.08 – 0.12
(0.2 – 0.3)
2.4 psi
(165)
8.5 psi
(600)
DG 10T
0.4 – 4
(1 – 10)
0.1 – 0.16
(0.25 – 0.4)
7 psi
(480)
DG 50T
1 – 20
(2.5 – 50)
0.4 – 0.8
(1 – 2)
DG 150T 12 – 60
(30 – 150)
1.2 – 2
(3 – 5)
DG 500T 40 – 200
(100 – 500)
3.2 – 6.8
(8 – 17)
Pressure switches with manual reset
(DG..HT, DG..NT)
Type
Adjusting
range*
"WC
(mbar)
Reset
pressure**
"WC
(mbar)
Max. inlet
pressure p
max.
psi (mbar)
No
venting
line
With
venting
line
1)
DG 10T
0.4 – 4
(1 – 10)
0.16 – 0.4
(0.4 – 1)
7 psi
(480)
8.5 psi
(600)
DG 50T
1 – 20
(2.5 – 50)
0.4 – 0.8
(1 – 2)
DG 150T 12 – 60
(30 – 150)
0.8 – 4.8
(2 – 12)
DG 500T 40 – 200
(100 – 500)
2 – 7.2
(5 – 18)
1)
Connect the venting line to port 4. Connections,
* 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.
