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Cert. version 11.17
© 2018 Elster GmbH · Edition 05.18
Operating instructions
D
GB
F
NL
I
E
GB-1
03251234
Translation from the German
Pressure switches for gas
DG..B, DG..U
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 operator.
This unit must be installed and commissioned in accord-
ance 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 11.17
The following chapters have been changed:
– Declaration of conformity
Checking the usage
Gas pressure switches DG for monitoring increasing
and decreasing gas or air pressure.
Positive pressure
Negative pressure
DG..B Gas, air, flue gas
–
DG..U Gas, air, flue gas
Air, flue gas
This function is only guaranteed when used within the
specified limits – see page 3 (Technical data). Any
other use is considered as non-compliant.
Type code
Code
Description
DG
Pressure switch for gas
6 – 500
Max. setting in mbar
B
U
BN
UN
For increasing positive pressure
For increasing positive/negative/
differential pressure
For decreasing positive pressure
For decreasing positive/negative/
differential 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
Part designations
1
2
3
4
Type label
DG
CE –
2
1
3
D-49018 Osnabrück, Germany
Safety
1
Upper housing section
with cover
2
Lower housing section
3
Hand wheel
4
M16 cable gland
Max. inlet pressure =
withstand pressure,
mains voltage, ambient
tempera ture, enclosure:
see type label.
