GB-15
GB
F
NL
I
E
Pulse value V
Imp
for pulse tests via optical inter-
face:
Gas meter
Decimal
place
in display
Pulse
value V
Imp
in dm
3
BK-G6
3
1
BK-G10 – BK-G40
2
10
Communication module: GSM RF technology.
Data logger for past meter readings:
up to 20 weeks in hourly intervals.
Optical interface: pursuant to EN 62056-21,
Mode (E), Annex B.2.
Pulse output
Type of switch: open collector transistor, normally
closed.
For switching voltage and current, see section
“ATEX explosion protection” below.
Resolution: 1 pulse per 10 litres of base volume.
Maximum pulse frequency: 4 Hz.
Minimum pulse duration: 125 ms.
For further technical data on diaphragm gas meters
BK, see:
“Operating instructions for diaphragm gas meters
BK-G1.6 to BK-G25”
→
http://docuthek.kromschroeder.com/doclib/main.ph
p?language=1&folderid=400041&by_class=2&by_
lang=-1
“Instruction Manual, Industrial Diaphragm Gas Meters
Type BK-G40 · BK-G65 · BK-G100 and Type BK-G40T
· BK-G65T · BK-G100T”
→
http://docuthek.kromschroeder.com/doclib/main.ph
p?language=1&folderid=400045&by_class=2&by_
lang=-1
ATEX explosion protection
The index EI3 is certified as an ATEX subassembly
and is marked as follows:
II 2 G Ex ib IIA T4 Gb
= Specific explosion protection mark
II = Equipment group for “non-mining”
2G = Equipment category 2 (zone 1) for gas
EX = Symbol for electrical equipment
built according to European standards
ib = Type of ignition protection:
i = intrinsically safe
b = suitable for use in zone 1
IIA = Explosion group for gases
T4 = Temperature class: maximum allowable
surface temperature: 135°C
Gb = Equipment protection level (zone 1)
The batteries and communication modules are
certified as parts of the electronic index. Use only
spare parts from Elster. For suitable batteries and
communication modules, see page 14 (Spare
parts).
The electrical interfaces feature the following
parameters:
Pulse output:
– U
i
= 26.6 V
– I
i
= 250 mA
– P
i
= 414 mW
– C
i
= 0.012 µF
– L
i
= 0 mH
For further technical data on diaphragm gas
meters BK, see:
“Operating instructions for diaphragm gas meters
BK-G1.6 to BK-G25”
schroeder.com/doclib/main.php?language=1&folderi
d=400041&by_class=2&by_lang=-1
“Instruction Manual, Industrial Diaphragm Gas Meters
Type BK-G40 · BK-G65 · BK-G100 and Type BK-
G40T · BK-G65T · BK-G100T”
→
kromschroeder.com/doclib/main.php?language=1
&folderid=400045&by_class=2&by_lang=-1
Logistics
Transport
Diaphragm gas meters are always to be transported
in the upright position. On receipt of the product,
check that the delivery is complete, see page 2
(Part designations). Report any transport damage
immediately.
Storage
Diaphragm gas meters are always to be stored in
the upright position and in a dry place. Ambient tem-
perature: see page 14 (Technical data).
Disposal
Meters with electronic components:
Components, particularly batteries, are to be dis-
posed of separately.
On request, old units may be returned carriage paid
to the manufacturer, see page 16 (Contact), in
accordance with the relevant waste legislation re-
quirements.
