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Product application, installation and service manual
ELIS PLZE
Ň
a. s.
Ultrasonic Flow Meter SONOELIS SE 4015 and SE 4025
Page 13 of 44
ELIS PLZE
Ň
a. s., Lu
č
ní 15, P. O. BOX 126, 304 26 Plze
ň
, Czech Republic, tel.: +420/377 517 711, fax: +420/377 517 722
Es 90 337 K/c
5.2 Assembly
5.2.1
General directions
In meter assembly/fitting, strict observance of the guidelines and principles given in this manual is necessary.
The meter installation shall be in compliance with the requirements of standard
Č
SN EN 14154-2, chapter 5.
To prevent undesirable electromagnetic interference, the power cables shall be laid at least 25cm away from the
meter signal wires. Any signal wire connections shall be done by soldering and the soldered joints shall be protected
against climatic and mechanical stresses by means of suitable installation boxes. All cables shall be lead outside
thermal insulation layers on piping (if any). Connections to the Pt 100 temperature sensor, current output and RS 485
communication interface shall be done by shielded wires. The shielding shall be earthed at only one end (connected to
the respective terminal on the X1 terminal strip in the meter electronic unit). Shielded conductors are also
recommended to be used at the frequency and impulse outputs. The shielding shall be earthed at one end only, in this
case on the side of the higher-level control system.
Both meter parts need be properly earthed. Use earthing conductor of cross-section of at least 4mm
2
to connect the
earthing bolts on the electronic unit box and the flow sensor body as shown in Fig. 14..
DIRECTION
ELIS PLZEN a.s.
PROBE 2
PROBE 1
FLOW
SONOELIS
COMFORT
min.4mm
2
Fig. 14 Earthing of the electronic unit and flow-meter sensor