VEGA VEGASWING 83 fail safe and signal conditioning instrument VEGATOR 526 Ex - Manual (Page 13)

VEGASWING 81 W5 Ex.C, 83 W5 Ex.C fail safe 13
Mounting
2 Mounting
2.1 VEGASWING
Generally VEGASWING can be mounted in
any individual position. The instrument must
just be mounted such, that the tuning fork is at
the height of the requested switch point.
However note that VEGASWING is only fail
safe as overfill protection (mode A). Note the
following for mounting:
Transport
Do not hold VEGASWING on the tuning fork.
Especially on flange and tube versions the
tuning fork can be damaged by the instrument
weight.
Switch point
Laterally on the tuning fork there are markings
for the switch point in vertical installation in
relation to the medium water. Note when
mounting VEGASWING that the marking is at
the height of the requested level. Note that the
switch point of the instrument is shifted when
the medium has a density deviating from
water (water = 1,0 g/cm
3 ). Adjust the
appropriate density range on VEGATOR
526␣ Ex. See also “4.2 Signal conditioning
instrument VEGATOR 526␣ Ex“ (see fig. 2.1).
Vertical mounting
from top, from bottom
Horizontal mounting
Switch
point Switch
point
Switch point with
higher density
Switch point with
low density
75 mm
approx.
25 mm
recommended installation position for
adhesive products:
Adhesive mediums
For horizontal mounting in adhesive and
viscous mediums, the surface of the tuning
fork should be vertical to reduce build-up on
the fork (see fig. 2.2). The position of the
tuning fork is marked on the hexagon of
VEGASWING. Hence you can check the
position of the tuning fork during mounting.
When the hexagon is placed to the seal, the
thread can be turned by half a turn. This is
sufficient to reach the recommended
installation position.
For adhesive and viscous mediums the tuning
fork should protrude into the vessel to avoid
build-up. Sockets for flanges and mounting
bosses should therefore not exceed a certain
length. With flange versions, the socket
should have a length of max. 40␣ mm, with
threads max. 30␣ mm. The slide switch for the
density adjustment must be set to position 2.
Switch point
Switch point
Marking on top
Fig. 2.1
Fig. 2.2