VEGA VEGAVIB 31-53 - Manual (Page 3)

VEGAVIB 3
Product description
1 Product description
1.1 Function and configuration
VEGAVIB compact level switches are used for
level monitoring of powders and granules. The
vibrating level switches are energised
piezoelectrically and vibrate at their mechanical
frequency (VEGAVIB 31 approx. 210 Hz,
VEGAVIB 41 and 43 approx. 530 Hz, VEGAVIB
51, 52 and 53 approx. 350 Hz).
If the measured product reaches the sensor, the
vibrating amplitude is damped. An integrated
electronics detects this damping and triggers a
switching command.
VEGAVIB 31 is a tuning fork sensor and is suit-
able for unproblematic, fine-grained solids
> 100 g/l which do not cause buildup. Typical
products are gypsum, cement, chalk, fine gran-
ules, etc.
VEGAVIB series 40 and 50 vibrating level
switches can be used where levels of solids
with a density greater than approx. 20 g/l need
to be reliably detected. Due to the rod design, it
is almost impossible for material to build up or
get wedged in. This enables their use in food-
stuffs and light solids such as e.g. packing
chips. Typical products are cement, gypsum,
chalk, flour, styrofoam, shredded paper, wash-
ing powder, plastic granules, down feathers,
packing chips etc. A pulsed actuating signal
causes the rod to begin vibrating again after
immersion and removes the measured product
from the vibrating rod.
Series 50 sensors are also suitable for the de-
tection of solids in water.
1.2 Types and versions
VEGAVIB 31
Tuning fork compact level switch with fixed
installation length and mounting thread G 1 A.
The oscillator of VEGAVIB 31 has a floating
relay output.
VEGAVIB 41
Vibrating rod compact level switch with fixed
installation length and mounting thread G 1 A or
1 NPT. Three different oscillators are available
for different electrical outputs (contactless
electronic switch, relay or transistor). As an
option, a temperature adapter is available for
product temperatures exceeding 100°C.
VEGAVIB 43
Vibrating rod compact level switch with tube
extension up to max. 4 m. All other features are
the same as VEGAVIB 41. As an option, a lock
fitting is available for infinitely variable height
adjustment.
VEGAVIB 51
Vibrating rod compact level switch with fixed
installation length and mounting thread G 1½ A
or 1½ NPT. Four different oscillators are avail-
able for different electrical outputs (contactless
electronic switch, relay, transistor or two-wire
output). As an option, a temperature adapter is
available for product temperatures exceeding
100°C.