User Manual & Datasheet V 2.3
1
Introduction
Vital is a vibrating fork level limit switch for free-flowing
solids having a maximum granule size
≤
12
mm. It is suit-
able for level detection in silos, bins, hoppers, etc. where
the process temperature ranges between
0
◦
C to
+
150
◦
C.
It has no moving parts and can replace rotating paddle level
switch in most applications.
Figure 1: Vital Product Image
2
Operating Principle
A specially shaped tuning fork is kept vibrating using
piezo-electric elements. The oscillations of the fork dampen
when it comes in contact with the application material. The
loss of oscillation amplitude is detected and used for switch-
ing the output. The output contacts of the relay are in turn
used for annunciation and / or control.
Figure 2: Description of Parts
3
Features
•
Low Power Consumption: Less heat, Long life.
•
Fast switching minimum of 0.5s availbale on request
with FS option
•
Self-diagnosis.
•
External LED indication available with WL option
•
Independent of material’s electrical properties.
•
Compact instrument, minimum tines length of 100 mm.
•
No moving parts, no wear and tear, maintenance-free.
•
IP68 Protection, as per IS 13947.
•
Polished tines ideal for hygienic applications with FB
option
4
Applications
•
Fast Packaging machines for powders, granuales
•
PET / PVC chips with underwater detection
•
Powders, sand & sugar
•
Iron ore, sinters & pulverized coal
•
Dry sand & Fly-ash
•
Food grains
•
Cement
Sapcon Instruments Pvt.Ltd.
R
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