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ELIS PLZEŇ a. s.
measured fluid flowing upwards. This arrangement ensures better mixing action and homogenity of the fluid
flowing through the meter sensor.
The pressure loss vs. flow rate characteristics of individual sensor models are shown in a table in section 4.3
above. In the cases of commercial (invoicing) meters, the evaluation electronic unit of the meter shall be
supplied from the mains (230 V, 50 Hz) by a separate power line with an overcurrent circuit breaker to be sealed
at the ON position, where the switching-off actions shall be reserved to duly authorised staff only. The
recommended power supply cable is CYKY 3x1.5 mm
overcurrent circuit breaker should be rated at 6 A. The recommended cable for the RS 485 communication line
is JYTY – Al with laminated foil 2D x 1 mm
6. METER INSTALLATION GUIDE
The meter assembly and installation directions given in this manual shall be strictly observed.
To prevent undesirable interference between the power and signal devices, the power cables shall be placed at
least 25 cm away from all signal cables (the coaxial cables connecting the sensor with the signal processing
electronic circuits in the case of a split version of the meter, the RS 485 communication line and the output signal
cables). If a signal cable needs be extended, the cable conductors shall be soldered and the soldered joint
protected against environmental and mechanical stresses by a suitable installation box. All cables shall be led
outside the thermal insulation layers on the fluid piping. To connect a Pt 100 thermometer, the current output and
the RS 485 communication line, use shielded wires with the shield connected to the ground potential terminal on
terminal board X1 in the electronic unit box (or X2, see section 6.2 below). Shielded wires are also
recommended to be used for the frequency and impulse output signals where the shields should be connected
to the ground potential in the superordinated electronic control system.
Sensor must be grounded properly. For grounding use a conductor with minimum cross section area
2
4 mm
and connect the conductor to grounding bolts of evaluation electronic and flow sensor (see figure here
below).
Note:
During using of RS 485 communication is needed to follow these instructions:
1) Frequency of device calls is max. once per ten seconds
2) Call repeating by unsuccessful call is possible first in five seconds (in the case the device didn´t respond)
3) It can be requested only one service by call proceeding
Test device is running during the communication too. This test could be guided with short-term display blink.
It is not fault of device in any case.
Earthing connection between the sensor and the electronic unit (the split version)
6.1. Electronic circuits (the split version)
The electronic signal processing unit shall be mounted in a vertical position on an installation frame. The
interconnection between the electronic unit and the meter sensors (UC 3.0 or UC 5.0) is described in section 6.2
below. The connecting coaxial cables should not differ in length by more than 0.1 m.
ELIS PLZEŇ a. s., Lucni 15, P. O. BOX 126, 304 26 Plzen, Czech Republic, Phone: +420/377517711, fax: +420/377517722
Design, Assembly and Service Manual
Ultrasonic flow meter SONOELIS SE404X,
SONOELIS SE406X
2
with the external diameter 10.5 mm, and the associated
2
with a repeater for every 1,000 m of the line.
M4
SONOELIS
COMFORT
ELIS PLZEÒ
a.s.
M4
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Es90201K/c
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