Installation; Temperature Test Point; Connecting The Pressure Measuring Line - Elster BK-G Series Operating Instructions Manual

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 pressure p
and measuring range Q
plate – p. 2].
– Note the permitted ambient temperature t
gas temperature t , see [Type label/Index plate
g
– p. 2] or [Technical data – p. 5].
– The gas meter is suitable for mechanical ambient
conditions of Class M1 of Directive 2004/22/EC.
For gas meters with an Absolute ENCODER index,
Class E2 for electromagnetic ambient conditions
also applies.
– When installing the diaphragm gas meter BK with
integrated "Smart 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.
– For meters resistant to high temperatures, only
use seals tested to be resistant to high tempera-
tures.
– Only use the seals once.
– For installation and operation, note the applicable
national regulations and the directives of the gas
supply company. For Germany, the valid DVGW
Code of Practice G600 (DVGW-TRGI) applies.
– 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 humidity
is permitted.
1 Remove protective caps.
▷ Installation in the horizontal 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.
▷ 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
max.
, see [Type label/Index
max.
and
m
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).
 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).

Temperature test point

▷ Temperature sensors can be inserted into the ▷
thermowells for measuring the gas temperature
in the meter housing.
1
 Secure each of the temperature sensors using
the capstan screw provided.
Connecting the pressure measuring
line
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.
▷ Functional safety and reliability are ensured only if ▷
the material combination of the screw connector
and the pressure line are intermatched.
▷ 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 progres- ▷
sive ring fittings PSR/DPR.
1
4
GB-3
must be included
2
2 3
5
– see