In-cylinder displacement transducer (LDT) were used with limited success in mobile devices to achieve these goals. [1] A limitation for most of LDT in bottles, is that the hydraulic cylinder rod must be aos drilled through its center to adjust some elements of the LDT, AI in general, the waveguide tube made of a magnetostrictive transducer. [2] The additional processing steps and associated production, drilling Äúgun, AU add the piston rod to considerable costs for the finished cylinder. And even if magnetostrictive LDT offer extremely high accuracy, this accuracy is usually much higher than is necessary for applications on mobile devices more accuracy Overkill AI, if you want, [3].

Hydraulic cylinder Energy Manufacturing Co, Inc [4]. has a Hall effect sensor mounted on the barrel a sense of place in a magnetic piston. The sensor is mounted without gundrill the rod, but its small size and location away from the potential environmental LDT damage.External

external displacement transducer (LDT) eliminates the need for a hollow shaft of the hydraulic cylinder. Instead, Au an external recognition, Äúbar with Hall-effect technology detects the position of the cylinder, the piston AOS. This is achieved by placing a permanent magnet inside the bulb. [5] The magnet magnetic field propagates through the steel wall of the hydraulic cylinder, a signal to the sensor location. [6] The LDT has the following advantages over .

Outside of the LDT procedure.

In general, lower total costs (ie, no need to gun-drill rod)

Instability is maintained with full auctioning

The cylinder is easier to assemble, install and service

A variety of sensor inputs and outputs are available

The permanent magnet in the piston should never be shared must

The external sensor is easily accessible and easy to replace, if necessary

If the detection beam is replaced, recalibration is not necessary

The sensor bar is small and its position along the outer wall of the hydraulic cylinder to minimize the risk of environmental damage

Positioning accuracy is / - 0.5 mm or more, more than enough for most mobile devices

There are no cables or wires are used, and therefore no concerns about stretching or breaking through the ice, branches or other obstacles to the environment

In the case of the machine lost power and later, the sensor sends the current position

OEM can aos prepare hydraulic cylinder with magnets so that end users add detection at a later date, if desired