Connection of the encoder
-
Use only screened cable to connect the encoder and ensure that
the pin assignment is correct (see sticker next to the cover of the
terminal box).
-
When connecting the Namur interface, ensure that the 2-wire
connection has the correct polarity. The SCR interface is
independent of the polarity.
Then install the
meter
- gas-tight,
- with the supplied accessories,
- only in
flow direction
(as marked by an arrow on the meter housing),
- only
unstressed
and
-
preferably
in horizontal position
with the counter at the top.
The
permitted installation/operating positions
of the meter are
specified
on the
meter housing
in accordance with the designations “H, V or H/V” represented in
accordance with DIN EN 12261. If you have specified the installation or operating
position when ordering, all attachments will have been fitted in accordance with the
installation position ex-works.
If you wish to
install the unit vertically at a later point
and if an oil pump is present, the
oil pump must also be fitted vertically. If this is not the case, you must turn the oil pump
and its oil connection line and any other attachments, e.g. volume corrector, through 90°
before installing the meter.
We recommend that you contact our After-Sales Service for such conversion work.
- weatherproof.
- When fitting the seals and gaskets, ensure that they are
aligned concentrically
and do
not project into the flow channel.
12. Commissioning
For meters
without oil pump
, continue with point “Placing the system into operation”.
Meters
with oil pump
must be provided with initial lubrication
Before commissioning:
- First open the
cover
on the oil supply tank.
- Fill the oil supply tank with the supplied
oil
.
- The
oil quantity
is sufficient when the oil level reaches around ¾ of the tank volume.
- Operate the
oil pump as instructed in Section “Maintenance and lubrication”
and
only then close the oil supply tank.
Placing the system into operation
In order not to damage the meter,
-
slowly fill
the system until operating pressure is reached.
-
The
pressure rise
may not exceed 350 mbar/s. You should also use a bypass line for
filling (recommendation: 12 mm pipe diameter).
- Do no exceed the
measuring range
even briefly!
- Conduct a
tightness test
!
Important!
Dirt particles, such as welding beads, swarf and other foreign bodies, may be
contained in the gas for a short while after installation.
For this reason, always fit a coarse filter
in order to avoid damage to the counter.
Do
not forget
to remove the coarse filter after approx. 4-6 weeks since, should it become
saturated, this would produce an obstacle to flow.
All rights reserved. Subject to technical modification.
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