GB-2
D
GB
F
NL
I
E
Checking the usage
DL..K
For monitoring positive, negative or differential air or
flue gas pressures.
This function is only guaranteed when used within the
specified limits – see page 4 (Technical data). Any
other use is considered as non-compliant.
Type code
Code
Description
DL
Pressure switch for air
3,3 – 40
Max. setting in Pa
K
With tube connection and hand wheel
for adjustment
T
T-product
G
Gold contacts
-1
-3
Electrical connection
via AMP plugs
via screw terminals
K
N
T
T
Red/green pilot LED 24 V DC/AC
Blue pilot lamp 120 V AC
Blue pilot lamp 230 V AC
Red/green pilot LED 230 V AC
W
Z-angle bracket
Part designations
1
2
3
4
1
Upper housing section with cover
Lower housing section
3
Hand wheel
4
M16 cable gland
Type label
Mains voltage, switching pressure, ambient tempera-
ture and enclosure: see type label.
Osnabrück, Germany
DL..K
Installation
CAUTION
Please observe the following to ensure that the
DL..K is not damaged during installation and op-
eration:
– Condensation must not be allowed to get into
the housing (if possible, install pipework with an
ascending gradient). Otherwise, there is a risk of
icing of condensation at subzero temperatures,
the switching point shifting or corrosion in the
device which can lead to malfunctions.
– In the case of uneven ground, secure the pres-
sure switch to the mounting plate or air duct
with only two screws on the same side in order
to avoid subjecting the pressure switch to me-
chanical stress.
– Protect the connections against dirt or moisture
in the medium to be measured or the surround-
ing air. If necessary, install a filter.
– When using silicone tubes, only use silicone
tubes which have been sufficiently cured. Va-
pours containing silicone can adversely affect
the functioning of electrical contacts.
– In case of highly fluctuating pressures, install a
damping nozzle.
▷
Installation in the vertical or horizontal position, or
upside down, preferably with vertical diaphragm.
If installed in a vertical position, the switching
point p
S
will correspond to the scale value SK.
If installed in another position, the switching
point p
S
will change and no longer correspond
to the set scale value SK. Switching point p
S
must be checked.
p
s
= SK
SK + 13 Pa
[+ 0.052 "WC]
SK - 13 Pa
[- 0.052 "WC]
1
Install the DL using screws, a securing clip or an
angle bracket.
66
4,4
(0.14")
ø 6,1
(ø 0.24")
(2.6")
2
2
2
▷
Tube connection: Ø 6 mm (0.236").
▷
Max. inlet presure p
max.
= 5000 Pa (20 "WC).
