Tightness Test; Interface For Mechanical Index; Interface For Absolute Encoder Index; Diaphragm Gas Meters Bk With Integrated - Elster BK-G1.6 Operating Instructions Manual

▷ 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.
▷ 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 →▷Products →▷Gas measuring
devices → Diaphragm meters → Ergänzung für
Betriebsanleitung BK, Verschraubungen und An-
zugsmomente für BK-G1,6 bis BK-G25 (Supple-
ment for BK operating instructions, Screw unions
and tightening torques for BK-G1.6 to BK-G25)
(D).
2 Install the gas meter free of mechanical stress.
▷ The gas meter marked with ▷
in the equipotential bond when being installed in
a potentially explosive atmosphere, e.g. by con-
necting it to a grounded pipeline.
▷ If a pulse sensor IN-Z6x is used for pulse tap- ▷
ping on the gas meter marked with
Data sheet for pulse sensor IN-Z6x (D, GB)
www.docuthek.com → Elster-Instromet → Prod-
ucts → Gas measuring devices → Diaphragm
meters →▷Pulse sensor IN-Z61 and the standard
EN 60079-14 (Explosive atmospheres).

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 pressure p
erwise, the installed gas meter may be damaged.
▷ If a valve is integrated in the diaphragm gas meter ▷
BK, see [Type label/Index plate – p. 2], this must
be opened for the tightness test.
▷ Ensure the customer's consumers are closed, ▷
see [Diaphragm gas meters BK with integrated
"Smart Valve" – p. 3].
1 Apply the test pressure slowly to the gas meter.
2
 After the tightness test, slowly vent the gas meter.
must be included
– see
for the gas meter. Oth-
max.
Commissioning
Once the tightness test has been successfully com-
pleted, the gas meter is ready for operation.
▷ Slowly open the manual valve. ▷

Interface for mechanical index

For pulse tapping, the pulse sensor IN-Z6x can be
connected – see Data sheet for pulse sensor IN-Z6x
(D, GB) →▷www.docuthek.com →▷Elster-Instromet →▷
Products →▷Gas measuring devices → Diaphragm
meters →▷Pulse sensor IN-Z61.

Interface for Absolute ENCODER index

Interface description for gas meters with ENCODER in-
dex – see Specification (D, GB) →▷www.docuthek.com
→▷Elster-Instromet →▷Products →▷Gas measuring
devices → Diaphragm meters → Encoder index →
Specification.

Diaphragm gas meters BK with integrated

"Smart Valve"

In the event that the diaphragm gas meter BK is fit-
ted with an integrated "Smart Valve", see [Type label/
Index plate – p. 2], the gas supply can be connected
or disconnected remotely.
WARNING
The network provider is responsible for the safe
remote shut-down and restart of the diaphragm
gas meter:
– The "Smart Valve" does not assume the safety
functions of a safety shut-off valve.
– Depending on national regulations, a limited and
technically safe gas flow rate in the customer's
open consumer piping is allowed, see [Technical
data – p. 4].
– Assessment of the non-critical gas flow rate with
regard to amount and duration, which occurs
when the valve is released, is to be defined by
the network provider.
– The minimum operating pressure on the inlet
must not be undershot, see [Technical data – p. 4].
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.
GB-3