Developed by Fluidwell Instruments
BV and available in the UK from
icenta Controls, the Presense
LDS300 is a level detection and
switching system for solids and
liquid in tanks, hoppers, vessels or
containers. It is said to be particulaly
suitable for measuring in harsh,
pressurised, abrasive, hot and
corrosive environments and with low
dielectric materials.

It uses ‘Field Time Control’
technology where a concentrated
electric field is generated around the
sensor; the reaction time of the
sensor varies as the material
interferes with the electric field and
the sensor signal output corresponds
to the presence or absence of material
at that point. In particular, Field
Time Control technology can detect
weak signals coming from low
dielectric products allowing high
accuracy measurement.