

Ultrasonic level transmitters use an acoustic
pulse is emitted from the transducer towards the surface to be
measured. This acoustic pulse is then reflected back towards the
transducer and the time taken for the pulse to return is accurately
measured by microprocessor-controlled circuitry. Knowing the speed
of sound in air and allowing for ambient temperature, the microprocessor
can mathematically determine the correct distance to within 1
mm. We use this technology in all of our sensors, switches,controllers
and instrumentation
The algorithms used in KAB's Sumpi series of
ultrasonic level detectors have proven effective in preventing
the instrument from locking on to any false echoes, guaranteeing
valid level indication. The devices feature compensation for fluctuations
in ambient temperature - and all instruments in the range are
programmed via an integral keypad and LCD display, through a menu
driven set-up procedure. Damping of the instrument is achieved
through selecting a rate of change appropriate to the medium being
measured versus the actual rate of change of the process.
While many other ultrasonic transducer manufacturers
have difficulties dealing with dust coating on the transducer,
KAB's unique self-cleaning system prevents a layer of material
from accumulating on the face of the transducer.