Clean line pneumatic cylinder with integrated programmable multi-position stroke sensing
Parker Hannifin has launched what it claims is the world's first clean line pneumatic cylinder to feature a multi position programmable stroke sensing system.
Designated the P1D Clean, the cylinder incorporates a patented internal foil positioning sensor, which eliminates problems of external dirt traps and making it ideal for use in applications where hygiene and ease of cleaning are essential.
Just as important, the ability to provide programmable multi position sensing of the cylinder rod position gives OEMs and end users the ability to improve the performance and productivity of machine systems without the need for costly accessories.
The sensing technology is based on a thin and robust multi layer strip set within the cylinder body extrusion and running along its length. The strip comprises a flexible conductive magnetic foil positioned above and separate from a potentiometer formed from two longitudinal circuits. A permanent magnet mounted around the circumference of the piston is then used to draw the conductive layer into contact with the potentiometer so that the exact position of the piston can easily be established.
The potentiometer circuit is fed directly to a logic and software PCB, again positioned internally, with a single M12 connector providing a link to external control devices that include an optional handheld programming unit or a conventional PLC. This allows the P1D to be programmed remotely, eliminating the need for engineers to access or dismantle machine systems when setting up or reconfiguring production equipment.
