Tightness Test; Commissioning; Bk-G..a With Absolute Encoder; And Communications Module Acm - Elster BK-G Series Operating Instructions Manual

6 7
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.
▷ When re-installing, the union nut will be turned
to the original position and then further tightened
through approx. 30°.
 Once the installation and tightness test are com-
plete, see page 5 (Tightness test), protect the
pressure test point against external access with
the sealing sleeve and the seal.

Tightness test

▷ Check the pipework for leaks prior to installa-
tion of the gas meter, in case the pipework is
tested with a greater test pressure than the max.
allowable operating pressure p
meter. Otherwise, the installed gas meter may
be damaged.
▷ If a valve is integrated in the diaphragm gas me-
ter BK, see page 3 (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.
2
2
▷ If a pressure measuring line has been retrofitted
3
to the diaphragm gas meter, check this connec-
tion for tightness.
3
4 After the tightness test, slowly vent the gas meter.
5 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.

Commissioning

Once the tightness test has been successfully com-
pleted, the gas meter is ready for operation.
▷ Slowly open the manual valve.
BK-G..M with mechanical index
For pulse tapping, the pulse transmitter IN-Z6x can
be connected – see Data sheet for pulse transmitter
IN-Z6x (D, GB) → www.docuthek.com → Elster-
Instromet → Products → Gas measuring devices →
Diaphragm meters → Pulse transmitter IN-Z61.

BK-G..A with Absolute ENCODER

index AE/Z6
Interface description for gas meters with ENCODER
index – see Specification (GB) → www.docuthek.com
→ Elster-Instromet → Products → Archive → Gas
measuring devices.
BK-G..A with Absolute ENCODER AE/AE
and communications module ACM
If the diaphragm gas meter BK-G..A is fitted with
communications module ACM, you can find further
information ...
–
for the gas
max
–
BK-G..E, BK-G..ETB, 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 (D, GB, I) →
www.docuthek.com → Elster-Instromet → Products
→ Smart metering → Electronic index.
Diaphragm gas meters BK with integrated
valve
In the event that the diaphragm gas meter BK is fitted
with an integrated valve, see page 3 (Diaphragm
gas meters with integrated valve), the gas supply can
be connected or disconnected remotely.
Unless otherwise agreed, the valve is open on delivery
as standard.
–
–
GB-5
for commissioning in the Communications module
ACM M-BUS WIRE, ACM SCR+ WIRE... operat-
ing instructions or in the Communications module
ACM WAVE SYSTEM RF operating instructions
(D/GB/SK/NL) → www.docuthek.com → Elster-
Instromet → Products → Smart metering → ACM:
communications modules.
on the protocols in the corresponding docu-
ments at www.docuthek.com → Elster-Instromet
→ Products → Smart metering → AE: protocol
variants.
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.