GB-9
D
GB
F
NL
I
SK
RUS
E
RO
SRB
IN-Z64
(Part No. 32319618)
Retrofit kit – Order No. 72910117
IN-Z65
(Part No. 32319762)
Retrofit kit – Order No. 72910180
IN-Z68
Part/Order No. 32320278
Interface parameters, see page 9 (Technical data).
▷
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 ret-
rofitted 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
DIN EN 437:2003 (DVGW Code of Practice G260).
The following technical data can be found on the
type label/index plate:
–
max. allowable operating pressure p
max
–
measuring range: Q
min
/Q
max
–
max. allowable ambient temperature range t
m
–
max. allowable gas temperature range t
g
*
–
cyclic volume V
For meters with temperature conversion only:
–
base gas temperature t
b
–
specified centre temperature t
sp
**
Other technical data:
–
transitional flow rate Q
t
= 0.1 x Q
max
–
max. allowable storage temperature range:
-25 to +60°C
–
mechanical environment class: M1
▷
Observe installation conditions! See 4 (In-
stallation).
–
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 t
g
is specified
on the index plate, the following applies: t
g
= t
m
.
** The specified centre temperature t
sp
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.
Diaphragm gas meters BK with pressure test
point
Pressure test point: 24° olive fitting to EN ISO 8434-1,
L6 x M12 x 1.5-St.
Diaphragm gas meters BK with explosion
protection
For meters of Category 1 which are marked with
, the ambient temperature t
amb
and the gas
temperature t
gas
are limited to a maximum range
between -20°C and +55°C. In this case, the admis-
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 transmit-
ter IN-Z6x:
IN-Z6, IN-Z6, IN-Z6, IN-Z64, IN-Z65:
U
i
= 30 V
I
i
= 50 mA
P
i
= 250 mW
C
i
, L
i
negligible
IN-Z68:
U
i
= 8 V
I
i
= 10 mA
The following interface parameters apply for
BK-G...A/AT
:
U
i
= 5.5 V
I
i
= 30 mA
P
i
= 33 mW
C
i
= 140 µF
L
i
= 0 µH
Diaphragm gas meters BK 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: 17.5 mbar.
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. 15 s).
Max. operating pressure for valve operation:
100 mbar.
▷
The operating pressure of the gas meter can be
higher if necessary.
Leakage flow (closed): max. 1 l/h up to 100 mbar.
