WIKA LSO.25 - Manual (Page 13)

WIKA operating instructions models LSO.06, LSO.25 13
13334603.01 09/2010 GB/D/F/E
4. Design and function
GB
4. Design and function
4.1 Description
The transducer is used for measuring liquid level limits.
The conical tip of the sensor ensures really precise on-off performance level sensing.
Its reaction is independent of various physical parameters of the liquid such as density,
dielectric constant, conductivity, colour or refractive index. This allows the use for safe
level switching as well as for precise level control applications. If there is any foam you
even can decide whether to use the sensor for foam level or liquid level control, suppress-
ing the influence of foam on switching.
If the sensor is supplied with a U-tip, it is able to sense changes in refractive index. So it
can be used for example as an interface level switch for liquids.
Application range
Principle of operation
Separation layer, U-tip
e.g. oil
e.g. water
Principle of operation
Level, conical tip
Gas
Liquid
Working pressure in bar Working pressure in bar
Medium temper
atur
e in °C
Medium temper
atur
e in °C Standard pressure version
without heatsink
threaded connection
High pressure
version with
heatsink
threaded
connection NPT ½
High pressure
version with
heatsink
threaded
connection G ½ A
All typs of transducers need a switching amplifiers model LSO.25 for power supply and
switch state signalling.