VEGA VEGATROL 20 Ex - Manual (Page 16)

VEGATROL 20 Ex 16
Pre-requirements for set-up
-
the sensor VEGATROL is installed in its final position
and the tuning fork is not covered
- the failure LED is dark
The set-up is carried out by pushing the set-up key for
approx. 4 sec.
During set-up, VEGATOR is adapted to VEGASWING.
The actual resonance frequency is detected as current by
VEGATOR and stored as reference value.
Condition up to approx. 4 secs. after set-up:
Yellow LED lights
Green LED in set-up key lights
Green LED lights
Condition up from approx. 4 secs. after set-up:
Green LED lights
Note:
-
If the signal conditioning instrument VEGATOR
526 W Ex is exchanged by a new instrument of the
same type, the set-up must be repeated.
- The set-up of the continuous level measurement or
level detection is made acc. to the description in the TIB
of the signal conditioning instrument used.
3 Mounting and set-up
3.1 Mounting
The tuning fork of system sensor VEGATROL 20 is within
the concentric tube. The length from the flange lower edge
to the end of the tuning fork is stated on the type plate
(corresponds to the dimension L2, page 10).
The switch point must be generally at 85 % of the vessel
volume.
The adaption to the respective vessel dimensions is
realized via dimensioning of the concentric tube.
Calculation help see supplement.
A sealing must be used between flange and system
sensor which is suitable for the use in liquid gas plants.
In case of installation lengths of the system sensor
exceeding 1,5 m the extension tube in the vessel must be
protected against bending (e.g. vibrations by fluctuating
product). If there is danger of mechanical damage, the
extension tube in the vessel must be protected against
bending.
The system sensor with cable electrode is supplied with
fixing insulator and fixing spring. The cable electrode must
be fixed via the fixing spring and the fixing insulator to the
bottom of the vessel (the spring is used to tighten the
cable electrode).
The system sensor must be generally mounted vertically.
3.2 Set-up
After electrical connection of VEGASWING Ex to
VEGATOR 526 W Ex the overfill protection goes to
operating status.
Operating status before set-up:
Yellow LED lights
(= level relay de-energized)
Green LED in set-up key flashes
(= set-up not yet carried out)
Green LED lights
(= supply voltage in)
3 Mounting and set-up
VEGATOR 526 W Ex
on
VEGATOR 526 W Ex
on
VEGATOR 526 W Ex
on