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Tracking of the position in the piston accumulator: 

Keeping a constant eye on the filling level

SIKO SGH sensors are used in piston accumulators. Here the SIKO position sensorsare once more in a class of their own. They can be efficiently installed in the gas section of the piston accumulator with minimum space and measure the operating status, for example the filling level of the piston accumulator. Safety versions with redundant outputs or CANopen Safety interfaces are also available for critical systems and applications with high safety requirements. Compatible indicators from the accessory range can also be used for simple visualization of the operating status.

A piston accumulator is used to provide hydraulic pressure on demand, without the need to install a secondary hydraulic pump. This allows the accumulator to be used as emergency back up systems, energy recovery systems, and other applications requiring on demand hydraulic pressure. Compared to a standard hydraulic cylinder a piston accumulator has no internal rod, allowing the piston head to move freely within the pressure vessel. 

Areas of application 
Piston accumulators are used in many mobile applications, including: construction and forestry machines, as well as cranes and other lifting platforms.  They are also used in general industry as energy storage devices and safety back up systems.  
Piston Accumulators are, among others, used for the following functions: 

▪    Pressure equalization control in hydraulic systems
▪    Energy Cost reduction, through hybrid hydraulic circuit design
▪    Emergency opening/closing of doors, hatches, covers, etc.
▪    Safety system to avoid pressure drops in the hydraulic circuit

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SIKO-SGH10 SIKO-SGH25 SIKO-SGH50 Siko-ZB4009
Draw-Wire Encoder SGH10
Draw-Wire Encoder SGH25
Draw-Wire Encoder SGH50
Rope Swivel ZB4009

 

Application 1. – Sensor Installation in Gas chamber

SIKO-Applicatiion1-SensorInstallationGasChamber

Thanks to the compact design of the SGH sensors, they can be integrated into the piston accumulator in a space-saving and efficient manner. Connected via the draw wire to the free moving piston head, the various states of the gas volume and pressure can be calculated. This allows conclusions to be drawn as to the pressure within the hydraulic system, i.e overpressure, underpresure and/or simply change in state.