Abstract: A high pressure seal assembly provides an electrical path between the sensor and an external connector.

Abstract: A multi-turn non-contacting rotary shaft position sensor that determines a positional parameter of a rotating shaft. The sensor converts the rotational movement of an input shaft to a linear translational movement of a magnetic element. A magnetically sensitive sensor is provided in a fixed location in close proximity to the magnetic element within the flux field of that magnetic element. As the input shaft rotates, the magnetic element moves along that linear path toward or away from the magnetically sensitive sensor so that the sensor detects the change in the magnetic flux imposed by the magnetic element. That change in magnetic flux is used to determining a positional parameter of the input shaft.

Abstract: A multi-turn non-contacting rotary shaft position sensor that determines a positional parameter of a rotating shaft. The sensor converts the rotational movement of an input shaft to a linear translational movement of a magnetic element. A magnetically sensitive sensor is provided in a fixed location in close proximity to the magnetic element within the flux field of that magnetic element. As the input shaft rotates, the magnetic element moves along that linear path toward or away from the magnetically sensitive sensor so that the sensor detects the change in the magnetic flux imposed by the magnetic element. That change in magnetic flux is used to determining a positional parameter of the input shaft.

Abstract: A sensor mountable within a hydraulic cylinder provides a precision signal indicative of the position of the piston. The sensor includes a flexible connector attached between the cylinder piston and a converting element for sensing the piston displacement. The converting element comprises a pick-up spool, under tension, coupled to the other end of the connector and rotatable about an axis. A lead screw engages threads on the spool, and translates linearly when the spool rotates. A non-contacting electromechanical transducer senses the position of the lead screw, and provides an output signal proportional to the motion or position of the movable element. The transducer may be an LVDT or other transducer. A high-pressure seal assembly provides an electrical path between the sensor and an external connector. A piston stop prevents the piston from damaging the sensor.

Abstract: A sensor mountable within a hydraulic cylinder provides a precision signal indicative of the position of the piston utilizing a non-contacting electromechanical transducer. The sensor includes a flexible connector attached between the cylinder piston and a converting element for sensing the displacement of the cylinder piston. The converting element comprises a pick-up spool coupled to the other end of the connector and rotatable about an axis. The spool is under tension from a spring coupled to the spool. A lead screw engages threads on the interior of the spool, and translates along an axis when the spool rotates. A transducer is disposed to sense the position of the lead screw, and provides an output signal proportional to the motion or position of the movable element. The transducer may be an LVDT or other non-contacting transducer.