Page 44 - EngineerIT November 2022

NEW PRODUCTS AND SERVICES

Intelligent sensors for smart cylinders

IKO has developed technology that transforms hydraulic SIKO worked closely together with cylinder manufacturers to
and telescopic cylinders as well as piston accumulators define and satisfy the specifications regarding service life, shock
Sinto smart cylinders and hydraulic systems. A suitable and vibration resistance, EMC and compatibility with various
sensor is available for all applications. With measuring lengths hydraulic media. All specifications were tested and confirmed in
of up to 5000 mm, a wide selection of interfaces as well as high endurance tests at the facilities of cylinder manufacturers or in
flexibility for integration of the sensors, the SGH family offers a external accredited laboratories. INSTROTECH has made these
broad range of possibilities. Redundant options and sensors for new developments available in South Africa.
performance levels of up to PLd are available for safety critical
application. Reliable position tracking
Smart sensors take mobile hydraulics to a new level of safety
The technology and efficiency. “Functional safety” is a term that is being
SGH sensors use a wire draw mechanism that is integrated widely discussed. Safety concepts for mobile machinery has
directly into the cylinder to measure the stroke. The wire of the been a topic of interest since the implementation of the new
wire draw mechanism is secured to the piston head. When the Machinery Directive EN 13849. Sensors of the SIKO SGH range
cylinder extends, the wire wound on a wire drum is pulled out. help implement intelligent safety concepts for mobile machinery
The resulting rotation of the drum is detected by the contactless and meet the requirements of the specific safety standards for
sensor system and converted into a linear position. This means different utility vehicles.
that precise and absolute position or speed tracking of the The safety versions of the SGH25 and SGH50 sensors meet
cylinder is possible at any time. The magnets used to measure the requirements for use in applications up to Performance Level
the rotation are scanned by the contactless sensor system d (PLd). Safe and redundant design in compliance with CAT3 as
through the pressure resistant base plate of the SGH sensors. well as a safe mechanical design means SIKO products are pre-
The electronic components are fully encapsulated and located destined for use in safety-critical applications, also under unusual
on the non-pressurised side of the system. The entire measuring conditions.
system is therefore incorporated into the cylinder and optimally In addition, the sensors supply process data which not only
protected against external environmental influences. Clear serve to satisfy safety requirements, but also offer an added
advantage: in contrast to measuring systems mounted externally value for the machine. The process data can therefore provide
on the cylinder, the sensor system cannot be damaged, insight into an impending seal maintenance interval. Flexible
negatively affected or even destroyed by environmental support tracking in crane and lifting applications extend the
conditions. working ranges of the machine. Memory functions in industrial
trucks save time and make work safer. All these are examples of
Developed for the tough conditions in mobile how SGH sensors not only make machinery safer, but also more
hydraulic applications efficient.
The SIKO SGH sensors were designed and developed in line
with the strict specifications of renowned hydraulic cylinder For more information call INSTROTECH on 010 595 1831,
manufacturers. Market demands ensured that SIKO met their sales@instrotech.co.za or www.instrotech.co.za or
requirements regarding robustness, durability and functionality. visit the product page

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