Tightness Test; Commissioning; Bk-G..a With Absolute Encoder Ae And; Encoder Index Ae1/Z6 - Elster BK-G Series Operating Instructions Manual

1 2
4 5
1 2
4
5
▷ Use corrosion-resistant, seamless precision steel ▷
6 7
tube pursuant to DIN EN 10305-4 (external di-
ameter 6 mm, material E235 = 1.0308). For other
materials, use a suitable adapter and note the
Parker/EO recommendations.
▷ Install pipes free of mechanical stress. ▷
4 5
6 7
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°.
11 Once the installation and tightness test are com-
plete, see [Tightness test – p. 4], protect the pres-
sure test point against external access with the
sealing sleeve and the seal.

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 pmax. for the gas meter. Oth-
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. 5].
1 Apply the test pressure slowly to the gas meter.
3
2
2
3
▷ If a pressure measuring line has been retrofitted ▷
3
3
4 After the tightness test, slowly vent the gas meter.
5 If a pressure measuring line has been retrofitted

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 interface for mechanical index
The pulse sensor IN-Z6x can be used for pulse tap-
ping – 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.
BK-G..A with interface for Absolute

ENCODER index AE1/Z6

Interface description for gas meters with ENCODER
index – see Specification (D, GB) → www.docuthek.
com → Elster-Instromet → Products → Gas measur-
ing devices → Diaphragm meters → Smart metering
→ Specification M-BUS or SCR+.
BK-G..A with Absolute ENCODER AE and

communication module ACM

If the diaphragm gas meter BK-G..A is fitted with
communication module ACM – for further com-
missioning see Communication module ACM
M-BUS WIRE, ACM SCR+ WIRE... operating in-
structions or Communication module ACM WAVE
SYSTEM RF operating instructions (D, GB, NL) →
www.docuthek.com → Elster-Instromet → Products
→ Gas measuring devices → Diaphragm meters →
Smart metering.
BK-G..E with electronic index
If the diaphragm gas meter BK-G..E is fitted with
an electronic index – for further commissioning see
Electronic index operating instructions (D, GB) →
www.docuthek.com → Elster-Instromet → Products
→ Gas measuring devices → Diaphragm meters →
Smart metering.
GB-4
to the diaphragm gas meter, check this connec-
tion for tightness.
to the diaphragm gas meter, protect the pressure
test point against external access with a sealing
sleeve and a seal.