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Type label
D-49018 Osnabrück, Germany
DL
CE
Max. inlet pressure p
max.
voltage, ambient temperature, enclosure: see type
label.
Installation
CAUTION
Please observe the following to ensure that the DL
is not damaged during installation and operation:
– Dropping the device can cause permanent dam-
age. In this event, replace the entire device and
associated modules before use.
– Check max. ambient temperature – see
page 5 (Technical data).
– When using silicone tubes, only use silicone
tubes which have been sufficiently cured.
– Vapours containing silicone must not be allowed
to get into the housing.
– Condensation must not be allowed to get into
the housing. At subzero temperatures, malfunc-
tions/failures due to icing can occur.
– The service life will be shorter if subject to ozone
concentrations exceeding 200 μg/m
installing outdoors, place the DL in a roofed
area and protect from direct sunlight (even IP 65
version).
– Avoid subjecting the DL to strong or violent
vibrations.
– In case of highly fluctuating pressures, install
a restrictor orifice, see page 4 (Restrictor
orifice for DL..A).
▷ Ensure that there is sufficient installation space.
▷ Ensure unobstructed view of the hand wheel.
▷ Installation position as required, preferably with
vertical diaphragm. Then the switching point p
corresponds to the scale value SK set on the
hand wheel. In other installation positions, the
switching point p
S
correspond to the scale value SK set on the hand
wheel. Check the switching point.
p
= SK
p
= SK + 0.18 mbar p
S
S
2
3
1
= withstand pressure, mains
DL 5–150A
DL 5–150A
3
. When
DL 5–150K
DL 5–150K
will change and no longer
= SK - 0.18 mbar
S
Connection facilities
▷ For 1 mm thick mounting plates, use self-tapping
screws for plastic:
DL..AH, DL..AN: Ø 3.5 x 8 mm or Ø 4 x 8 mm.
DL..KH, DL..KN: Ø 3.5 x16 mm.
1 Fit the DL.
DL..AH,
DL..AN
Rp ¼
ø 2,7 x 8
(ø 0.11" x 0.3")
ø 3,5 x 8
(ø 0.14" x 0.3")
M16 x 1,5
DL..KH,
DL..KN
64 (2.5")
ø 2,7 x 16
(ø 0.11" x 0.6)
M16 x 1,5
2 Connect the pressure line.
▷ DL..A: upon delivery, port 2 is closed off by a
rubber cap.
1
DL..A
1
▷ Positive pressure, port 1 or 2
▷ Negative pressure, port 3; after unscrewing
port 3 also port 4
DL..K
S
▷ Positive pressure, port 2
▷ Negative pressure, port 3; after unscrewing
port 3 also port 4
Positive pressure measurement
▷ 1 or 2 = positive pressure port (+).
▷ If port 2 is used, close off port 1.
▷ 3 or 4 = remains open to ventilate the upper
diaphragm chamber.
GB-2
49,5 (1.9")
44,5 (1.7")
28,5 (1.1")
54,5 (2.1")
ø 6,1 (ø 0.24")
45 (1.8")
28,5 (1.1")
1 = Rp 1/4 (+)
2
2 = ø 4,75 x 1 mm (+)
3 = ø 4,75 x 1 mm (-)
3(4)
(4 = Rp 1/8 (-))
1 = Rp 1/4 (+)
2
2 = ø 4,75 x 1 mm (+)
3 = ø 4,75 x 1 mm (-)
3(4)
(4 = Rp 1/8 (-))
2 = ø 4,75 x 1 mm (+)
2
3 = ø 4,75 x 1 mm (-)
3(4)
(4 = Rp 1/8 (-))
2 = ø 4,75 x 1 mm (+)
2
3 = ø 4,75 x 1 mm (-)
(4 = Rp 1/8 (-))
3(4)
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