VEGA VEGASWING S 51 - Manual (Page 16)

Handling
Do not hold VEGASWING S 51 on the tuning fork.
Bending the vibrating element will destroy the
instrument.
3 .2
Instructions for installation
Welded socket
VEGASWING S 51 has a defined thread runout.
This means that every VEGASWING S 51 is in the
same position after being screwed in. Remove
therefore the supplied flat seal from the thread of
VEGASWING S 51. This flat seal is not required
when using a welded socket with front-flush seal.
The welded socket has a marking (notch). For
horizontal mounting, weld the socket with the
marking notch facing upward or downward; in
pipelines, aligned with the direction of flow.
1
Fig. 15: Marking on the welded socket
1 Notch
Adhesive products
In case of horizontal mounting in adhesive and
viscous products, the surfaces of the tuning fork
should be vertical. The position of the tuning fork is
indicated by a marking on the hexagon of
VEGASWING S 51. With this, you can check the
position of the tuning fork when mounting it.
In case of horizontal mounting in adhesive and
viscous products, the tuning fork should protrude
into the vessel to avoid buildup on the tuning fork.
Flows
To minimise flow resistance caused by the tuning
fork, VEGASWING S 51 should be mounted in
such a way that the surfaces of the blades are
parallel to the product movement.
4 C onnecting to power supply
4 .1
Preparing the connection
Note safety instructions
Always keep in mind the following safety instruc-
tions:
l
Connect only in the complete absence of line
voltage
4 .2
Wiring plan
Contactless electronic switch
The instrument is used for direct control of relays,
contactors, magnet valves, warning lights, horns
etc. It must not be operated without intermediately
connected load, because the electronic would be
destroyed if connected directly to mains. It is not
suitable for connection to low voltage PLC inputs.
Domestic current is temporarily lowered below
1
mA after switching off the load so that contactors,
whose holding current is lower than the constant
domestic current of the electronics (3 mA), are
reliably switched off.
Examples for typical applications:
l
Load resistance at 24 V DC: 88 … 1800 Ω
l
Rated power, relay 253 V AC: > 2.5 VA
l
Rated power, relay 24 V AC: > 0.5 VA
For the plug version valve plug ISO 4400, standard
cable with round wire cross-section can be used.
Cable diameter 4.5 … 7 mm, protection IP 65.
3
2 1
3
2 1
R
L
N- L1+
PE
R
L
L1+ N-
PE
1 2
Fig. 16: Wiring plan, contactless electronic switch with valve plug
ISO 4400
1 Max. level detection
2 Min. level detection
P
E
Protective ground
R
L
Load resistance (contactor, relay, etc.)
16 VEGASWING S 51
Connecting to power supply
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