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
5
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