DK
S
N
P
GR
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D
GB
F
NL
I
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Cert. version 11.17
© 2019 Elster GmbH · Edition 04.19
Safety
Operating instructions
D
GB
F
NL
I
E
GB-1
03251434
Translation from the German
Pressure switches for air
DL..H, DL..N
Please read and keep in a safe place
Please read through these instructions
carefully before installing or operating. Following the
installation, pass the instructions on to the opera-
tor. This unit must be installed and commissioned
in accordance with the regulations and standards
in force. These instructions can also be found at
www.docuthek.com.
Explanation of symbols
• , 1 , 2 , 3
... = Action
▷
= Instruction
Liability
We will not be held liable for damage resulting from
non-observance of the instructions and non-com-
pliant use.
Safety instructions
Information that is relevant for safety is indicated in
the instructions as follows:
DANGER
Indicates potentially fatal situations.
WARNING
Indicates possible danger to life and limb.
CAUTION
Indicates possible material damage.
All interventions may only be carried out by qualified
gas technicians. Electrical interventions may only be
carried out by qualified electricians.
Conversion, spare parts
All technical changes are prohibited. Only use OEM
spare parts.
Changes to edition 09.18
The following chapters have been changed:
– Installation
– Technical Data
– Logistics
– Certification
Checking the usage
DL..H, DL..N
For monitoring increasing and decreasing air or flue
gas pressure.
DL..H switches and locks off with rising pressure,
DL..N switches and locks off with falling pressure.
They can be unlocked using the manual reset.
This function is only guaranteed when used within
the specified limits – see page 5 (Technical data).
Any other use is considered as non-compliant.
Type code
Code
Description
DL
Air pressure switch
10 – 150
Max. setting in mbar
A
K
Rp ¼, tube connection and hand wheel
Tube connection and hand wheel
H
N
Locks off with rising pressure
Locks off with falling pressure
G
With gold-plated contacts
-3
-4
-5
-6
-9
Electrical connection
via screw terminals
via screw terminals, IP 65
4-pin plug, without socket
4-pin plug, with socket
4-pin plug, with socket, IP 65
K2
T
T2
N
Red/green pilot LED for 24 V DC/AC
Blue pilot lamp for 230 V AC
Red/green pilot LED for 230 V AC
Blue pilot lamp for 120 V AC
A
External adjustment
Part designations
T est
1
2
3
5
4
1
Upper housing section with cover
2
Lower housing section
3
Hand wheel
4
M16 cable gland
5
DL..H, DL..N with manual reset
