Device Description; Intended Use - SIKA VH Notice D'utilisation

Device description

1 Device description
SIKA level switches are designed for the monitoring of minimum or maximum liquid filling
levels.
Components level switch:
Fig. 1
The rising level in the tank forces the float (5) upwards. Via the rocker bar system (1) the
magnet (2) changes its position in relation to the reed contact (3) and activates it. The repul-
sion between the two homopolar magnets (2) and (4) supports buoyancy (does not apply for
version VK..). As soon as the filling level decreases, the float (5) falls and reactivates the reed
contact.
Factory set switching function
• contact closes with rising level
•
contact opens with falling level
can be changed by the customer (not apply to VH...X).

1.1 Intended use

SIKA level switches are designed for the monitoring of minimum or maximum liquid filling
levels.
WARNING! No safety component!
The level switches of the series VH... / VK... are not safety components in accordance
with Directive 2006/42/EC (Machine Directive).
 Never use the VH... / VK... as a safety component.
The operational safety of the supplied instrument is only guaranteed if it is operated accord-
ing to its intended use (monitoring of liquid filling levels). The specified limit values should
never be exceeded ( §9 "Technical data")
It is your responsibility to select a technology which is suitable for your specific application, to
install it correctly, to carry out tests and to maintain all the components.
Various versions of this instrument are available. The respective type plate displays the actu-
al version of each instrument.
- 20 -
Functional principle:
Fig. 2
© SIKA • Ea1300_LevelSwitch • 04/2016
VH... / VK...