carefully before installing or operating. Following the
Please read through these instructions
installation, pass the instructions on to the operator. 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
• , , , ... = Action
▷ = Instruction
Liability
We will not be held liable for damage resulting from
non-observance of the instructions and non-compliant 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 07.7
The following chapters have been changed:
– Checking the usage
– Commissioning
– Accessories
– Technical data
– Declarations of conformity
– ATEX legend
– Logistics
GB
GB-1
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Checking the usage
m
3
,
-
BK-G..M..
12345678
DE-07-MI002-PTB001class 1,5
NG-47001BM0443 DIN EN 1359:2007
Q
max
Q
min
S/N: 002545632734 1 imp =^ 0,01 m
3
M ... 0102
Diaphragm gas meters BK-G.6 to G5
Residential or commercial diaphragm gas meters
BK for recording gas consumption values for natural
gas, town gas, propane and butane, as gases of the
first to third families pursuant to DIN EN 437:2003
(DVGW Code of Practice G260). If used for internal
GB
measurements which are not subject to statutory
testing, the gas meter is also suitable for hydrogen,
nitrogen, air and inert gases.
The meters are designed for use in air at normal
atmospheric conditions. For use in other environments, please contact the manufacturer (see also
page 4 (Installation)).
BK with integrated “Smart Valve”
Not suitable for highly contaminated gases, e.g.
town gas.
Potentially explosive atmosphere
Diaphragm gas meters that are labelled with
and (see sticker near the index) are suitable for
operation in potentially explosive atmospheres, see
page10 (Declarations of conformity).
The meter function is only guaranteed when used
under the specified operating conditions – see
page 9 (Technical data). Any other use is considered as non-compliant.
Type code
CodeDescription
BK-GDiaphragm gas meter
.6
.5
4
6
0
6
5
M
C
A
E
B
T
Te
TB
TeB
Chekker mechanical index
Absolute ENCODER index
Indication of volume at base conditions
Temperature conversion:
mechanical-electronic temperature
conversion and pressure correction
electronic temperature conversion and
pressure correction
Flow rate
0.016 – 2.5 m
0.025 – 4 m3/h
0.04 – 6 m3/h
0.06 – 10 m3/h
0.1 – 16 m3/h
0.16 – 25 m3/h
0.25 – 40 m3/h
Mechanical index
Electronic index
mechanical
electronic
Part designations
6
4
7
5
2
3
1
Diaphragm gas meter BK
Index with index plate
Connectors
4 Pressure test point to BS4161 (optional)
5 Protective caps
6 2 x thermowells (optional)
7 Pressure test point with sealing sleeve (optional)
Type label/Index plate
Please quote for all enquiries:
▷
The manufacturer’s serial number S/N can be
found at the bottom of the type label.
▷
The customer identification number is under the
barcode.
BK-G..M..
BK-G..M..
DE-07-MI002-PTB001
Q
max
class 1,5
Q
min
M ... 0102
S/N: 002545632734 1 imp =^ 0,01 m
3
BK-G..A.. with Absolute ENCODER index
/h
ENCODER VALVE Vs
M ... 0102
DE-07-MI002-PTB001
S/N: 002545632734
BK-G..E with index EI
BK-G..E..
Q
max
Q
min
V
p
max
M ... 0102
S/N: ............ EI2. ...
BK-G..E with index EI4
BK-G..E
Q
max
Q
min
V
p
max
class 1,5
M ... 0102
S/N: ............ EI4. ...
NG-47001BM0443 DIN EN 1359:2007
,
3
BK-G..A..
,
NG-47001BM0443 DIN EN 1359:2007
class 1,5
12345678
class 1,5
t
m
t
g
class 1,5
Valve Ve
t
m
12345678
t
g
t
b
12345678
3
m
-
3
m
-
^
...1 imp
=
GB-2
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BK-G..B with index EI
........
mgb
M ... 0102
15 ATEX 1550 X
BK-G..
m
,
-
BK-G..B
Q
max
t
m
Q
min
V
p
max
class 1,5
M ... 0102
S/N: ............
t
g
t
b
p
b
EI3. ...
V
b
12345678
BK-G..E with index EI5
BK–G6 E
M ...
= –20 °C ... +55 °C
gas
201x
t
m
t
g
Valve Ve
0102
II 3Gic c IIA T1Gc
Elster GmbH, Strotheweg 1
49504 Lotte, GERMANY
Elster GmbH, Strotheweg 1
49504 Lotte, GERMANY
BK–G6 ETe
201x
Q
max
Q
min
V
p
max
DE-11-MI002-PTB001
class 1,5
t
= t
amb
16ATEX1551X
S/N: ............ EI5.0x
BK-G..ETe with index EI6
1 imp
12345678
12345678
Diaphragm gas meters with integrated valve
VALVE Vx
^
...
=
Valve variants:
Vs = Smart Valve
Ve = bi-stable valve with electronic flow rate testing
Use as follows:
Category, internal: none, external: 2 (Zone1).
Type of atmosphere: gases, hazes and vapours.
BK-G..M, BK-G..C, BK-G..MT, BK-G..CT with
RFID passive tag
3
GB
t b
Q
max
t m
Q
min
V
p
max
DE-14-MI002-PTB003
class 1,5
Valve Ve
EI6.0xS/N: ...........
t
g
IP
t
= t
amb
15ATEX1550X
M ...
= –25 °C ... +55 °C
gas
0102
GPRS
II -/3 G IIB T4
BK-G..E.. and BK-G..B
The following data is not necessarily specified on
the type label/index plate, but can be called up in
the menu:
– specified centre temperaturetsp (for meters with
temperature conversion only),
– EN 1359 registration number (if available),
– firmware version.
▷
A number of variants are available for the elec
tronic indexes. The EIx.xx ID of the index variant
can be found at the bottom of the type label or
on the index cover next to the serial number S/N.
Further information can be found in the supplementary operating instructions of the relevant index.
Use as follows:
Category, internal: none, external: 2 (Zone 1).
Type of atmosphere: gases, hazes and vapours.
BK-G..A, BK-G..AT
-
Use as follows:
Category, internal: none, external: 2 (Zone1).
Type of atmosphere: gases, hazes and vapours.
GB-3
Elster GmbH, Strotheweg 1
BK
D-49504 Lotte, Germany
II -/2 G IIB T4
Ui=5,5V Ii=30mA Pi=33mW Ci=140µF Li=0µF
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BK-G..E, BK-G..ET, BK-G..ETB with index EI
Elster GmbH, Strotheweg 1
49504 Lotte, GERMANY
Category devices:
Elster GmbH, Strotheweg 1
BK
GB
Use as follows:
Category, internal: 3 (Zone 2), external: 1 (Zone 0).
Type of atmosphere: gases, hazes and vapours.
For the ambient and gas temperatures of the ATEX
Zones, see illustration.
Category devices:
BK
D-49504 Lotte, Germany
II 3/1G IIB T4
0044
= t
t
amb
TÜV 14 ATEX 143120 X
Elster GmbH, Strotheweg 1
D-49504 Lotte, Germany
= –20 °C ... +55 °C
gas
II -/3 G IIA T1
13 ATEX 1389 X
Use as follows:
Category, internal: none, external: 3 (Zone2).
Type of atmosphere: gases, hazes and vapours.
BK-G..B
Elster GmbH, Strotheweg 1
BK
D-49504 Lotte, Germany
II -/2 G IIA T4
TÜV 12 ATEX 098560 X
Use as follows:
Category, internal: none, external: 2 (Zone1).
Type of atmosphere: gases, hazes and vapours.
BK-G..E with EI5
0102
M ...
t
= t
amb
16ATEX1551X
= –20 °C ... +55 °C
gas
II 3Gic c IIA T1Gc
S/N: ............ EI5.0x
Use as follows:
Category: 3 (Zone 2).
Type of atmosphere: gases, hazes and vapours.
BK-G..ETe with EI6
t b
t m
t
g
IP
Valve Ve
M ...
t
= t
amb
EI6.0x
Use as follows:
Category, internal: none, external: 3 (Zone 2).
Type of atmosphere: gases, hazes and vapours.
gas
18ATEX1678 X
GPRS
0102
II -/3 G ic c IIB T4 Gc
= –25 °C ... +55 °C
Installation
WARNING
Please observe the following to ensure that neither
persons nor the gas meter are damaged during
installation and operation:
– Note the max. allowable operating pres-
surep
page2 (Type label/Index plate).
– Note the permitted ambient temperaturetm and
gas temperaturetg, see page2 (Type label/
Index plate) or page9 (Technical data).
– The gas meters are certified for mechanical
environments pursuant to Class M1 of Directive
2004/22/EC. When installed, the meters must
not be subject to permanent vibration such as
that caused by machines in the vicinity. In case
of doubt, vibration isolation must be provided.
For gas meter versions BK..A, BK..E and BK..B,
ClassE2 for electromagnetic environments also
applies.
– The dangers of chemical reactions between
gas meter parts and the chemical substances
in the environment are to be discussed by the
manufacturer and the operator and must be
eliminated.
– When installing the diaphragm gas meterBK with
integrated valve, make sure that no dirt particles
get into the meter and thus into the valve.
– The yellow sealing sleeve protects the pressure
test point on the gas meter. It may only be opened
for connecting a pressure measuring line.
– Use seals made from tested materials. Elastomer
seals or asbestos-free flat seals from Elster are
recommended.
– Only use the seals once.
– For meters resistant to high temperatures, only
use seals tested to be resistant to high tempera-
tures.
and measuring rangeQ
max
max
, see
GB-4
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– For installation and operation, note the applicable
12
national regulations and the directives of the gas
supply company. For Germany, the valid DVGW
Code of Practice G600 (DVGW-TRGI) applies.
– Work on meters and the installation of meters
which are marked with and are installed in
potentially explosive atmospheres may only be
carried out by persons with appropriate qualifications.
– The gas meter marked with must be in-
cluded in the equipotential bond when being
installed in a potentially explosive atmosphere,
e.g. by connecting it to a grounded pipeline.
Installation must be carried out in accordance
with EN60079-14.
– The gas meter marked with must be pro-
tected from falling parts.
– Avoid subjecting the unit to mechanical stress
and prevent damage. Gas meters must be installed without any mechanical stress, preferably
only by suspending them on the connectors.
When using additional clamps, it must be ensured that no lateral forces act on the gas meter.
These can be avoided by using flexible or supple
connection lines, for instance.
▷ If the calibration seal has been damaged or re-
moved, the gas meter is no longer approved for
measurements which are subject to statutory
testing.
▷ If the gas meter is stored or installed outdoors,
protect the site against rain. Condensing humid-
ity is permitted.
▷ Meters which are marked with H3 are suitable
for installation outdoors without additional protection.
Remove protective caps.
▷
Installation in the vertical position: connectors
must be pointing upwards.
▷ Note direction of flow (arrow).▷ The gas meter must not be in contact with ma-
sonry or other parts.
▷ Ensure that there is sufficient installation space.▷ Ensure unobstructed view of the index.▷
The seal faces on the screw unions must be
clean and damage-free.
▷ Ensure that the seal is correctly seated.
Co-axial meters:
▷ The seal must be centred over the internal dia-
meter.
▷
Note the installation position of the pressure ring.
The inner beaded edge must point upwards.
▷ Replace damaged pressure rings when replac-
ing the meter.
Co-axial and two-pipe meters:
▷ For the compression of seals and the resulting
tightening torques for the screw unions, the seal
manufacturers’ specifications must be observed.
Tightening torques for the recommended flat
seals in conjunction with screw connectors
pursuant to DIN 3376-1 and 3376-2, see
www.docuthek.com → Elster-Instromet → Prod-
ucts → Gas measuring devices → Diaphragm
meters → Ergänzung für Betriebsanleitung BK,
Verschraubungen und Anzugsmomente für BKG1,6 bis BK-G25 (Supplement to BK operating
instructions, Screw unions and tightening tor-
ques forBK-G1.6 toBK-G25)(D).
Install the gas meter free of mechanical stress.
▷
If a pulse transmitter IN-Z6x is used for pulse
tapping on the gas meter marked with – see
Data sheet for pulse transmitter IN-Z6x (D,GB)→
www.docuthek.com→ Elster-Instromet→ Prod-
ucts→ Gas measuring devices→ Diaphragm
meters→ Pulse transmitterIN-Z61 and the
standard EN60079-14 (Explosive atmospheres).
Temperature test point
▷
Temperature sensors can be inserted into the
thermowells for measuring the gas temperature
in the meter housing.
Secure each of the temperature sensors using
the capstan screw provided.
Pressure test point on housing
(optional)
GB
▷
When using an elastomer seal, always use a
pressure ring (shape A).
GB-5
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Connecting the piping
1
2
3
4
5
1
6
7
2
3
4
5
2
WARNING
In order to ensure that the gas meter is tight:
– The pressure test nipple must not be twisted,
bent, or otherwise manipulated.
– When installing, always secure the pressure test
nipple using a suitable spanner.
GB
Functional safety and reliability are ensured only if
▷
the material combination of the screw connector
and the pressure line are inter-matched.
▷
Only use the olive and the attached union nut
supplied. The olive is secured to the sealing
sleeve.
▷
When re-ordering, use original Parker EO progressive ring fittings PSR/DPR.
1
4
▷
Use corrosion-resistant, seamless precision steel
tube pursuant to DINEN10305-4 (external diameter 6mm, material E235= 1.0308). For other
materials, use a suitable adapter and note the
Parker/EO recommendations.
▷ Install pipes free of mechanical stress.
6
8 Screw on the union nut by hand as far as it will
go.
▷
At the same time, press the end of the pipe firmly
against the stop.
9 Mark the position of the union nut and tighten
with about 1½ turns.
2
3
5
7
0 Once the installation and tightness test are com-
plete, see page6 (Tightness test), protect the
pressure test point against external access with
the sealing sleeve and the seal.
Pressure test point on outlet
connector (optional)
BS4161-compliant pressure test nipple
▷
Use a 10 mm spanner to release/tighten the
test point screw.
▷
The test nipple is secured to prevent it turning
with the screw.
Opening the test nipple
Remove the screw from the test nipple com-
pletely.
▷ The gas connection is open.
Closing the test nipple
Insert the screw by hand as far as possible.
Tighten the screw with a torque of 3Nm +
0.5Nm.
Check for tightness, see page6 (Tightness
test).
WARNING
If the test nipple has unexpectedly come loose,
the gas meter must be regarded as damaged and
must be replaced.
Tightness test
▷
Check the pipework for leaks prior to installation of the gas meter, in case the pipework is
tested with a greater test pressure than the max.
allowable operating pressurep
meter. Otherwise, the installed gas meter may
be damaged.
▷ If a valve is integrated in the diaphragm gas me-
terBK, see page3 (Diaphragm gas meters
with integrated valve), this must be opened for
the tightness test.
▷ Ensure the customer’s consumers are closed.
Apply the test pressure slowly to the gas meter.
for the gas
max
▷
When reinstalling, the union nut will be turned to
the original position and then further tightened
through approx. 30°.
▷ If a pressure measuring line has been retrofitted
to the diaphragm gas meter, check this connection for tightness.
GB-6
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2
2
– The intrinsically safe electrical circuits of pulse
transmitters IN-Z61 and IN-Z64 are consid-
ered to be grounded at voltages > 10 V, if the
plug connector housings are connected to the
ground potential.
– The intrinsically safe electrical circuits of pulse
▷
If the BS4161-compliant test nipple on the meter
has been opened and then closed again, check
this connection for tightness.
transmitters IN-Z61, IN-Z62 and IN-Z65 are to
be considered as non-grounded.
BK-G..A with Absolute ENCODER
GB
indexAE/Z6
Interface description for gas meters with ENCODER
index– see Specification (GB)→ www.docuthek.com
→ Elster-Instromet → Products → Archive → Gas
measuring devices.
After the tightness test, slowly vent the gas meter.
4 If a pressure measuring line has been retrofitted
to the diaphragm gas meter, protect the pressure
test point against external access with a sealing
sleeve and a seal.
BK-G..A with Absolute ENCODERAE/AE
and communications moduleACM
If the diaphragm gas meter BK-G..A is fitted with
communications module ACM, you can find further
information ...
– for commissioning in the Communications mod-
ule ACM M-BUS WIRE, ACM SCR+ WIRE... op-
Commissioning
Once the tightness test has been successfully completed, the gas meter is ready for operation.
▷ Slowly open the manual valve.
Interfaces
Diaphragm gas meters BK are equipped with different interfaces, depending on the index version.
Only original Elster spare parts may be used in the
following cases:
– if devices are marked with
,
– if metrological data subject to statutory control
is transferred via the interface.
▷ For statutory, metrological use, add-on compo-
nents must be sealed. Permitted accessories,
see page 8 (Accessories).
BK-G..M with mechanical index
For pulse tapping, the pulse transmitterIN-Z6x can
be connected. For further information regarding
usage and the interface – see Data sheet for pulse
transmitter IN-Z6x → www.docuthek.com→ Elster-
Instromet→ Products→ Gas measuring devices→
Diaphragm meters→ Pulse transmitterIN-Z61.
WARNING
The following safety instructions apply for meters
which are marked with and fitted with a pulse
transmitter IN-Z6x:
– Only for connection to intrinsically safe electrical
circuits, see page 9 (Technical data).
– If the intrinsically safe electrical circuit is ground-
ed from a technical-safety point of view, the
intrinsically safe equipotential bond must cover
erating instructions or in the Communications
module ACM WAVE SYSTEM RF operating instructions (D/GB/SK/NL) → www.docuthek.com
→ Elster-Instromet → Products → Smart meter-
ing → ACM: communication modules.
– on the protocols in the corresponding docu-
ments at www.docuthek.com → Elster-Instromet
→ Products → Smart metering → AE: protocol
variants.
BK-G..E, BK-G..ETB, BK-G..ETe(B), BK-G..B
with electronic index
For further commissioning of diaphragm gas meters with electronic index – see the operating instructions of the respective electronic indexes →
www.docuthek.com → Elster-Instromet → Products
→ Smart metering → Electronic index.
BK-G... with RFID passive tag
WARNING
On meters which are marked with and fitted
with an RFID passive tag, the transmission capacity
of the RFID reader must not exceed the maximum
limits set out in EN 60079-0.
Diaphragm gas meters BK with integrated
valve
In the event that the diaphragm gas meter BK is fitted
with an integrated valve, see page3 (Diaphragm
gas meters with integrated valve) for designation,
the gas supply can be connected or disconnected
remotely.
Unless otherwise agreed, the valve is open on delivery
as standard.
the entire area of installation.
– EN 60079-14 is to be noted when installing
pulse transmitters.
GB-7
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WARNING
– The grid operator is responsible for the safe
remote shut-down and restart of the diaphragm
gas meter.
– The integrated valve does not assume the func-
tions of a safety shut-off valve.
▷
Should the diaphragm gas meterBK be ordered
GB
with a valve, but without control electronics to
be complemented by a third party, the technical
data of the control interface is to be requested
from ElsterGmbH and observed.
▷
The manufacturer of the control electronics is
responsible for creating the conditions required
for safe operation of the valve. Instructions on
commissioning and operation are to be taken
from the operating instructions for the control
electronics.
... with valve variant Ve
Notes on the function can be found in the operat-
▷
ing instructions of the electronic index. Technical
data, see page 9 (Technical data).
... with valve variant Vs (Smart Valve)
WARNING
– Depending on national regulations, a limited
and technically safe gas flow rate in the customer’s open consumer piping is allowed, see
page9 (Technical data).
– Assessment of the non-critical gas flow rate with
regard to amount and duration, which occurs
when the valve is released, is to be carried out
by the grid operator.
– The minimum operating pressure on the inlet
must not be undershot, see page9 (Technical data). Otherwise, when the valve is released
and if the customer’s consumer piping is open
at the same time, the valve may be completely
opened.
“Smart Valve” valve function
▷
The “Smart Valve” is switched remotely by the data
management system. The valve first switches to
the “Released” position. From the “Released” position, the valve automatically switches to the “Open”
position, if the downstream installation is tight.
Released
▷
The “Smart Valve” opens an internal bypass and
releases a minimum gas flow into the customer’s
closed consumer piping. Pressure equalization
takes place between the inlet and outlet side
of the valve.
Open
▷ Following pressure equalization, the valve auto-
matically opens by spring force and fully releases
the gas supply. If consumers of the customer are
open, pressure equalization cannot occur and
the valve remains in the “Released” position and
continues to release only the minimum gas flow
rate of the bypass.
Closed
▷
The valve and the bypass are closed in the event
of remote shut-down.
▷ All valve positions are kept when de-energized.
Maintenance/Removal
Gas meters BK-G1.6 to 25 from Elster are mainte-
nance-free (constraints for BK-G...E... and BK-G...B).
▷ When used for custody transfer measurements,
recalibration must be carried out in accordance
with national directives.
▷
If the screw unions are loosened for maintenance
work or retesting, replace the seals.
▷ After the gas meter has been removed, immedi-
ately close the connectors with protective caps
in order to prevent ingress of dirt particles.
▷
For meters with electronic indexes(BK-G...E...
and BK-G...B), it may be necessary to change
the battery, see “Operating instructions for operators and installers” for the corresponding
electronic index.
WARNING
A certain amount of gas may remain in the gas
meter. Taking into consideration the risk of explosion, it is important to adopt safety measures, e.g.:
– Following removal of the gas meter, purge it
thoroughly with inert gas.
– For transporting the gas meter with gas residue,
use a vehicle with an open or a ventilated loading area.
– The indexes must not be opened in an explo-
sion-hazard area even for maintenance and
repair. Opening of the service cover on the
electronic index, e.g. to change the battery,
is permitted– see “Operating instructions for
operators and installers” for the corresponding
electronic index.
– Meters which are installed in a potentially ex-
plosive atmosphere may only be cleaned using
a damp cloth to avoid static electricity charge.
Accessories
We recommend using Elster GmbH accessories only.
Pulse transmitters of the IN-Z6x series
▷ Also for devices which are marked with
IN-Z6 (Part No. 32319615)
Retrofit kit with connection cable –
Order No. 72910109
Retrofit kit without connection cable –
Order No. 72910114
IN-Z6 (Part No. 32319616)
Shipping unit – Order No. 32447303
IN-Z6 (Part No. 32319617)
Retrofit kit – Order No. 72910110
Retrofit kit with cable socket – Order No. 72910112
▷ As regards explosion protection, pulse transmit-
ters IN-Z6x are classified as simple electrical
apparatus and must thus not be marked.
Other communication modules
Meters which are marked with
may only be retrofitted with communications modules certified in
accordance with 2014/34/EU and which correspond
to the appropriate interface parameters (see page
9 (Technical data)).
Technical data
Diaphragm gas meter BK
Gas type: natural gas, town gas, propane and butane,
as gases of the first to third families pursuant to
DINEN437:2003 (DVGW Code of PracticeG260).
Observe installation conditions! See 4 (Installation).
– electromagnetic environment class: E2
Supplementary notes:
* If operated within the gas temperature range, the
measurement error still lies within the required
error limits. If no gas temperature tg is specified
on the index plate, the following applies: tg=tm.
** The specified centre temperaturetsp of the BK-
G...E...series and BK-G...B meters is not stated
on the index plate, but can be called up in the
display using the menu.
max
m
max
Diaphragm gas meters BK with pressure test
point
Pressure test point: 24° olive fitting to ENISO8434-1,
L6x M12x1.5-St.
Diaphragm gas meters BK with explosion
protection
For meters of Category 1 which are marked with
, the ambient temperature t
temperature t
between -20°C and +55°C. In this case, the admis-
are limited to a maximum range
gas
and the gas
amb
sible temperatures are to be taken from the ATEX
identification sticker.
The following parameters apply for meters BK-G..M,
BK-G..C, BK-G..MT, BK-G..CT with pulse transmitter IN-Z6x:
IN-Z6, IN-Z6, IN-Z6, IN-Z64, IN-Z65:
Ui = 30 V
Ii = 50 mA
Pi = 250 mW
C
, Li negligible
i
IN-Z68:
= 8 V
U
i
Ii = 10 mA
The following interface parameters apply for
BK-G...A/AT:
= 5.5 V
U
i
Ii = 30 mA
Pi = 33 mW
Ci = 140 µF
Li = 0 µH
Diaphragm gas metersBK with integrated
“Smart Valve”Vs
Not suitable for highly contaminated gases, e.g.
town gas.
Opening time (from closed to open/released state):
≤ 4 s.
Closing time: ≤ 0.5 s.
Min. operating pressure: 17.5mbar.
Allowed leakage flow in the customer’s piping:
valve released: max. 13 l/h at 35 mbar,
valve closed: max. 5 l/h.
Diaphragm gas meters BK with integrated
valve Ve
Opening time incl. flow rate measurement: < 2 min.
Opening and closing times: approx. 5 s
(max. 15s).
Max. operating pressure for valve operation:
100mbar.
▷ The operating pressure of the gas meter can be
higher if necessary.
Leakage flow (closed): max. 1 l/h up to 100 mbar.
GB
GB-9
Page 10
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Declarations of conformity
Scans of all valid Declarations of conformity – see www.docuthek.com → Elster-Instromet
Diaphragm gas meters BK-G..M, BK-G..C, BK-G..MT, BK-G..CT (without ATEX declaration)
GB
GB-10
Page 11
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Diaphragm gas meters BK-G..M, BK-G..C, BK-G..MT, BK-G..CT with ATEX declaration
GB
GB-11
Page 12
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Diaphragm gas meters BK-G..M, BK-G..C, BK-G..MT, BK-G..CT with RFID passive tag and ATEX
declaration
GB
GB-12
Page 13
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Diaphragm gas meters BK-G..A, BK-G..AT
GB
GB-13
Page 14
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ATEX legend
= Marking of explosion protection
II = Equipment group ll for general industries
(with the exception of mines)
-/2 = Category:
internal: none
external: Category 2 (Zone 1)
GB
-/3 = Category:
internal: none
external: Category 3 (Zone 2)
3 = Category 3 (Zone 2)
3/1 = Category:
internal: Category 3 (Zone 2)
external: Category 1 (Zone 0)
G = Type of atmosphere: gases, hazes and
vapours
ic = Type of ignition protection: intrinsic safety
for Zone 2
c = “Constructional safety” explosion protec-
tion type
IIB, IIA = Explosion group for gases
TX = No intrinsic heating
T1 = Temperature class: maximum allowable
surface temperature450°C
T4 = Temperature class: maximum allowable
surface temperature135°C
T6 = Temperature class: maximum allowable
surface temperature 85°C
Gc = Equipment protection level for Zone 2
Ta = Ambient temperature
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 page2
(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 temperature: see page9 (Technical data).
Disposal
Meters with electronic components:
WEEE Directive 0/9/EU – Waste
Electrical and Electronic Equipment Directive
At the end of the product life, dispose of the
packaging and product in a corresponding
recycling centre. Do not dispose of the unit
with the usual domestic refuse. Do not burn
the product.
On request, old units may be returned carriage paid
to the manufacturer, see page14 (Contact), in
accordance with the relevant waste legislation requirements.
Contact
Contact
Germany
Elster GmbH
Strotheweg 1
49504 Lotte
Tel. +49 541 1214-0
Fax +49 541 1214-370
info-instromet-GE4N@honeywell.com
www.elster-instromet.com
United Kingdom
Elster Metering Limited
Paton Drive
Tollgate Business Park
Beaconside
Stafford, ST16 3EF
Tel. +44 1785 275200
Fax +44 1785 275300
solution.elster@honeywell.com
www.elster-instromet.com
Ireland
Active Energy Control Ltd.
Unit 4, Clare Marts
Quin Road
Ennis, Co. Clare
Tel. +353 65 6840600
Fax +353 65 6840610
info@aec.ie
www.aec.ie
in the interests of progress.
We reserve the right to make technical modifications
GB-14
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