Retractable assembly for immersion-, flow- and attachment-measuring systems

摘要

A tool and a retractable assembly for measuring at least one measured variable of a medium in a containment, comprising: an essentially cylindrical housing; an immersion tube, which is movable axially in the housing between a service position run out from the medium and a process position run into the medium; and an engagement apparatus secured on the housing; wherein a movable piston is provided in the engagement apparatus and at least a first position and a second position of the piston are provided. The engagement apparatus holds the immersion tube in the service position when the piston is located in the first position, especially when no energy supply is present, and the engagement apparatus holds the immersion tube in an intermediate position between the service position and the process position and prevents further movement of the immersion tube in the direction of the medium when the piston is located in the second position.

主权项

1. A retractable assembly for immersion-, flow- and attachment-measuring systems in analytical process technology for measuring at least one measured variable of a medium in a containment, comprising:
a cylindrical housing; an immersion tube, which is movable by means of an energy supply, axially in said housing between a service position run out from the medium and a process position run into the medium; and an engagement apparatus secured on said housing, wherein: a movable piston is provided in said engagement apparatus; at least a first position and a second position of said piston are provided; said engagement apparatus holds said immersion tube in said service position when said piston is located in said first position; and said engagement apparatus holds said immersion tube in an intermediate position between said service position and said process position and prevents further movement of said immersion tube in the direction of the medium when said piston is located in said second position.