Position sensing device for hydraulic or electrohydraulic drives, and drive having position sensing means

A device for detecting a position of a rotation position or linear position of movable parts of drives which are functionally safe under extreme ambient conditions like at very low temperatures and in case of risk of explosion, wherein a movable part performs a rotation movement or a linear travel movement in relation to a stationary part, with a switching unit which comprises a plurality of switches arranged in a row adjacent to one another, wherein the switching unit is arranged at the stationary part, and with an actuating member for direct or indirect actuation of the plurality of switches of the switching unit depending on a relative position of the movable part of a drive,

• wherein
• the actuating member has a plurality of switch triggers corresponding to the plurality of switches of the switching unit, and
• that the plurality of switch triggers are each allocated to the plurality of switches through a setting in a row and/or arrangement between the movable part and the stationary part, such that in each case a determined, clear combination of switch positions of the plurality of switches at each relative position between the movable part and the stationary part is given,
• and
• that a control module with an evaluation unit is provided, in which there is stored a coding of different switch positions of the plurality of switches in relation to the relative position of the movable part of the drive.