Turck develops noise-immune capacitive sensor
A
Turck product story
Edited by the Engineeringtalk editorial team
Dec 12, 2008
Turck has introduced a noise-immune capacitive sensor for level applications.
The BCF10 sensor's small size makes it flexible for mounting and it has the ability to detect liquids with high concentrations of chlorides, such as soaps and cleaners.
'Turck's noise immunity technology has been used in barrel style sensors for years, but has recently been retooled for a flat pack housing,' said Melissa Schumann, product specialist with Turck's sensors division.
'In applications where a detergent high in chlorides is used, it is typically contained in a plastic container.
'Over time, the detergent leaves a film or etch on the inside wall of the container.
'If a standard capacitive sensor is used for level detection, it will detect this film even though the container is empty.
'The BCF circuit incorporates a compensating electrode configuration that allows the sensor to detect through the film and to the actual liquid in the container.' The BCF10 is a DC sensor, available with a 10mm sensing range in either a corded or quick-disconnect versions.
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