survey, and the individual measurement technique shall be designed for
this structure.
2.3.4. Mounting the flowmeter on the pipeline
2.3.4.1. Before working on the pipeline at the CP mounting location, fix the pipe
sections that may tip out of their axes after cutting the pipeline.
CAUTION! Before mounting the flowmeter, it is necessary to
cut off liquid flow in the pipeline section where the flowmeter will
be installed, make sure that pressure is released and drain the liq-
uid.
2.3.4.2. Cut a pipe run of the required length at the selected liquid-free pipeline
section. Join the flowmeter's flanges with the companion flanges pro-
vided in the delivery package and bolt them together. Make several tack
welds between the cut ends of the pipeline and companion flanges.
Then, remove the flowmeter and finally weld the flanges to the pipeline.
The flanges shall be welded as specified in National Standard
GOST16037-80 "Welded Joints of Steel Pipelines". Alignment of the
whole unit and flatness/parallel alignment of the flanges for the CP to be
mounted between them must be provided.
2.3.4.3. Mount the flowmeter on the pipeline provided that the arrow on the CP
points to the flow direction. Put rubberized asbestos fabric gaskets be-
tween the mating flanges and bolt the flanges.
CAUTION! IT IS STRICTLY FORBIDDEN
to throw the flowmeter
and hit it while mounting. This can cause damage to the PEAs installed
on it.
DO NOT
take the flowmeter by the CS case or PEA connection
cables. 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. Wiring the flowmeter
2.3.5.1. The flowmeter’s power cable and CS-external devices connection ca-
bles (if applicable) are laid in accordance with the flowmeter’s operating
conditions.
2.3.5.2. Communications and network cables are fixed on the wall wherever
possible. The network cable is laid separately at a distance of 30 cm as
a minimum from other cables. To avoid mechanical damages, it is rec-
ommended to place all cables in metal tubes or sleeves.
With presence of high-level electromagnetic interference (for in-
stance, from a thyristor controller)
IT IS FORBIDDEN
to lay the cables
without putting them into properly grounded (neutrally earthed) metal
tubes or sleeves.
2.3.5.3. It is recommended not to coil the excessive cables.
2.3.5.4. Prior to connection, cut insulation from cable ends. The cables are di-
rected via cable-through holes and attached to the connectors accord-
ing to the Wiring diagram given in Fig. B.1, see Appendix B. Refer to
Fig. A.2 of Appendix A for orientation of the connectors on the Meas-
urement and Calculation Board.
2.3.6. Mounting the Secondary Power Source
2.3.6.1. The rear panel of SPS case (if applicable) is equipped with the brackets,
which are used to mount SPS on DIN rail.
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