Ultrasonic level switch ignores dust and foam
A
K-Tek product story
Edited by the Engineeringtalk editorial team
May 28, 2008
The Ksonik Micro features Variable GAP technology that allows the instrument to work even in the presence of dust, vapour or foam.
K-Tek has released the Ksonik Micro, a compact, low-cost, ultrasonic level transmitter/switch designed for liquid and bulk solids level applications.
The Ksonik Micro features Variable GAP technology that allows the instrument to work even in the presence of dust, vapour or foam.
Variable GAP technology also provides the narrowest beam angle in the industry, at less than four degrees.
This allows the transmitter to make accurate measurements in narrow vessels.
The Ksonik Micro features an electronic filter that removes ambient noise, such as from falling rocks and grain.
An integrated Kscope display provides detailed data and trends, including echo profiles.
Adjustable threshold means level measurements can be made even with H-beams present in a silo.
The Ksonik Micro measures liquid levels to 10m and bulk solids to 5m.
Blanking distances have been shortened to less than 300mm.
A 4-20 mA output is standard for remote indication or remote control.
A single pole-double throw (SPDT) relay can be used to activate alarms and pumps.
"For the first time, obstacles like dust, vapour and foam do not limit the range of a level instrument", said Kevin Barnfather, Director of Sales and Marketing, Ultrasonic Products, K-Tek.
"The Ksonik Micro combines the highest accuracy for simple level measurement applications and ample power for challenging environments".
Ultrasonic measurements are based on the time of flight (TOF) of an acoustic wave that is emitted from a transducer and directed toward the product being measured.
This wave is reflected back toward the transducer and then converted to an electric signal.
The Ksonik Micro features a approach to measurements using Variable GAP (gain, amplitude and power) technology.
Variable GAP ensures accurate measurements by always working with the smallest return signal.
The gain is automatically increased if the return echo is being absorbed by dust or foam in the environment.
If the instrument cannot hear the return echo after adjusting the gain, the amplitude is automatically increased.
If the device still cannot hear the echo, the power is automatically adjusted.
Variable GAP provides 32,000 different combinations, guaranteeing measurements using the best echoes.
The Ksonik Micro's integrated display provides easy access to detailed readings, including distance and level, percentage fill, flow rate, total flow, height to the top of the material being measured and temperature.
An on-board echo profile provides full diagnostics which can also indicate trends.
The Ksonik Micro is housed in an IP65 polycarbonate enclosure.
The transducer uses PVDF-wetted parts for corrosive environments.
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