Infrared fork sensors detect clear, coloured or turbid fluids

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Balluff is launching a fluid detection sensor as the latest addition to its range of BGL Fork Sensors. This new infrared fork sensor is suitable for detecting the level of clear, coloured or turbid fluids with a water content >15 per cent through transparent walls. For example, it can cope easily with milk, household cleaners, viscous detergents and ketchup.

Applications that would normally cause problems for ultrasonic or standard capacitive sensors are often suitable for the BGL Fork Sensors, which can operate with transparent hoses of diameter 6mm or smaller. Thin residues that adhere to the container wall (up to a thickness of 0.5mm) can be compensated for by using the potentiometer to set the sensitivity.

Available with fork openings of 30mm and 80mm, these compact sensors are housed in a rugged IP67 metal enclosure. The sensors have a switching frequency of 2kHz and are available with NPN or PNP outputs. The BGL Fork Sensor has three-pin M8 connection and standard through-holes for mounting. Custom bracketry is not required, as a standard sensor holder is available from the new Balluff BMS universal mounting system.

For more information about the Balluff range of products, telephone +44 (0)161 282 4700, email or go to

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