19
Alignment of the whole unit and flatness/parallel alignment of the flang-
es for the CP to be mounted between them must be provided.
2.3.4.3. Mount the flow meter on the pipeline provided that the arrow on the CP
points to the flow direction. Put rubberized asbestos fabric gaskets
between the mating flanges and bolt the flanges.
CAUTION! IT IS STRICTLY FORBIDDEN
to throw the flow meter
and hit it while mounting. This can cause damage to the PEAs installed
on it.
DO NOT
take the flow meter by the CS case or PEA connection
cables. It is
STRICTLY FORBIDDEN
to dismantle PEA from assembly
branch pipes. During welding,
PROVIDE
the CS cable and PEA cables
with adequate protection from sparks. The welding temperature at the
PEA section
SHALL BE
lower than 100
C.
2.3.5. Mounting the flowmeter with threaded coupling
2.3.5.1.
Select the flowmeter’s pipeline mounting location observing the rules
specified in section 2.3.2.
2.3.5.2. Unscrew grooved nuts and dismount nipple joints which are the parts of
flowmeter.
2.3.5.3. Make sure that the simulator is installed into the assembly-welded struc-
ture instead of flowmeter, this is necessary to provide alignment be-
tween two welded units and to avoid damages to the flowmeter during
welding the structure to the pipeline.
Weld conical nozzles to the pipeline butt-to-butt in the same way as
to weld the adaptor pipes for the wafer type flowmeters, so that the
nozzle axis is perpendicular to the grooved nut plane. Welding works
shall be conducted in accordance with the requirements given in section
2.3.4.
CAUTION!
When replacing the simulator by the flowmeter after
welding, it is recommended to use a compensator to ensure that the
threaded couplings are moved apart by the distance of no less than
10 mm. The compensator may be as follows:
- KRK
manufactured by JSC "ArmaTreid"
- ARN/HYDRA by Danfoss
- Compensators from "WILLBRANDT" (authorized distributor is
"KREOLAIN" company), or similar.
The compensator shall be mounted into the pipeline following the
instructions outlined in the corresponding operational (maintenance)
documentation.
2.3.5.4. Replace the simulator with the flowmeter. The whole structure is as-
sembled by firm tightening of grooved nuts. When assembling the struc-
ture, it is required to install gaskets made of edible material and sup-
plied with the flowmeter, between the nozzles and grooved nuts.
2.3.6. Wiring the flow meter
2.3.6.1. The flow meter
’s power cable and CS-external devices connection ca-
bles (if applicable) are laid in accordance with the flow meter
’s operat-
ing conditions.
2.3.6.2. Communications and network cables are fixed on the wall wherever
possible. The network cable is laid separately at a distance of 30 cm as
