Pneumatics & Hydraulics


Position detection for hydraulic cylinders

November 2021 Pneumatics & Hydraulics

Instrotech now offers Siko’s SGH wire-actuated encoders to measure stroke as well as speed in hydraulic cylinders.

The technology

The new SGH sensors use a wire draw mechanism that is integrated directly into the cylinder to measure the stroke. The wire is secured to the piston head and when the cylinder extends, the wire unwinds off its drum and pulls out. The resulting rotation of the drum is detected by the contactless sensor system and converted into a linear position. This means that precise and absolute position or speed tracking of the cylinder is possible at any time.

The magnets used to measure the rotation are scanned by the contactless sensor system through the pressure resistant base plate of the SGH sensors. The electronic components are fully encapsulated and located on the non-pressurised side of the system. The entire measuring system is therefore incorporated into the cylinder and optimally protected against external environmental influences. In contrast to measuring systems mounted externally on the cylinder, the sensor system cannot be damaged or affected by environmental conditions.

Intelligent sensors for smart cylinders

The SGH technology transforms hydraulic and telescopic cylinders as well as piston accumulators into smart cylinders and hydraulic systems. With measuring lengths of up to 5000 mm, a wide selection of interfaces as well as high flexibility for integration of the sensors, a suitable sensor is available for all applications.

Redundant options and sensors for performance levels of up to PLd are available for safety critical applications. In addition, the sensors supply process data which not only serves to satisfy safety requirements, but also offers an added value for the machine as the process data provides insight into any impending maintenance issues.

Flexible support tracking in crane and lifting applications extends the working ranges of such machines, while memory functions in industrial trucks save time and make work safer. All these are examples of how SGH sensors make machinery safer and more efficient (www.bit.ly/3mKWwll).


Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

Pressure sensors for perfect coffee
Instrotech Pressure Measurement & Control
Rex-Royal has sourced pressure transducers from Keller’s 21C series for its S300 model range of bean-to-cup coffee machines.

Read more...
Pulse totaliser counter
Instrotech Flow Measurement & Control
The electronic unit shows flow rate, resettable daily and total counter (mass units can also be set), and all customised program settings remain saved, even after a battery exchange.

Read more...
Ultrasonic sensors enable automatic stacking turf harvester
Instrotech Sensors & Transducers
The AutoStack, and now the AutoStack II, use an automated Ultra Steer system to guide the harvester with precision while the operator watches over all aspects of the harvesting process.

Read more...
How do you audit a compressed air system?
Artic Driers International Pneumatics & Hydraulics
The British and American governments estimate that as much as 10% of all electricity generated is consumed by air compressors, and that some 50% of this energy is wasted. Air leaks alone can account for ...

Read more...
The shortest distance between concept and solution
Pneumatics & Hydraulics
QuickDesign is the only free, browser-based integrated package design program in the hydraulics industry. And now it includes a new SmartConnect browser-based schematic tool that allows you to take ...

Read more...
Wireless communication and control of electro-pneumatic manifolds and IO
SMC Corporation South Africa Pneumatics & Hydraulics
Pneumatic solenoid valves, for many decades,were controlled through discrete wiring,with each solenoid individually wired and connected to a common cable, such as a 25-pin D-sub connector. Technology ...

Read more...
Streamlined production with Festo Core Range
Festo South Africa Pneumatics & Hydraulics
Festo has developed an innovative product portfolio that contains a selection of over 2500 attractively priced quality products that have been designed with the optimised functionality necessary to fulfil numerous standard automation tasks.

Read more...
Magnetic-inductive flow meter for phosphate precipitation
Instrotech Flow Measurement & Control
With a 4-20 mA signal or optional pulse output, the MIK allows for immediate response to the latest process conditions.

Read more...
Compact infrared camera for the metal industry
Instrotech Temperature Measurement
The camera’s wide temperature measurement range of 450-1800°C satisfies practically all demands in the fields of metal production and processing.

Read more...
Destructive cavitation in hydraulic systems
Hydrasales Pneumatics & Hydraulics
Cavitation results from excessive vacuum conditions at the inlet to a pump. High vacuum creates vapour bubbles within the oil, which are carried to the discharge (pressure) side. These bubbles then collapse, ...

Read more...