Abstract: An apparatus for the automated production of glass assemblies includes: a turning machine with at least two spindles, which are rotatable about a common axis of rotation and which each have a workpiece holder, wherein the workpiece holders are arranged opposite one another; one or more gas burners or lasers fixed on a first tool carriage which is movable in parallel and/or perpendicularly to the axis of rotation; one or more drives for driving a rotational movement of the spindles and a movement of the first tool carriage; a pressure module including a pump device at least one working cylinder for applying a pressure to an inner tube and/or to a space between the inner tube and an outer tube; and a control unit configured to control the burners or lasers, one or more drives, the first tool carriage and the pressure module.

Abstract: A potentiometric sensor having a measuring half cell with a conductor element, a reference half cell with a reference element, a measuring circuit connected with the conductor element of the measuring half cell and the reference element of the reference half cell and designed to create a measuring signal that is dependent on a potential difference between the conductor element and the reference element. The measuring half cell further includes a housing having a housing chamber closed off by a first ion-selective membrane and contacted by the conductor element, a first inner electrolyte contained within the housing chamber and contacting the ion-selective membrane. The conductor element includes an inner conductor, especially an inner conductor comprising a metallic conductor, connected with the measuring circuit and a gas-tight barrier separating the inner conductor from the first inner electrolyte.

Abstract: An apparatus for the automated production of glass assemblies comprises: a turning machine with at least two spindles which are rotatable about a common axis of rotation and which each have a workpiece holder, wherein the workpiece holders are arranged opposite one another; one or more gas burners or lasers fixed on a first tool carriage which is movable in parallel and/or perpendicularly to the axis of rotation; one or more drives for driving a rotational movement of the spindles and a movement of the first tool carriage; a pressure module including a pump device at least one working cylinder for applying a pressure to an inner tube and/or to a space between the inner tube and an outer tube; and a control unit configured to control the burners or lasers, one or more drives, the first tool carriage and the pressure module.

Abstract: The present invention relates to a method for the automated production of a workpiece having at least one diaphragm, including a workpiece for an electrochemical sensor, including providing a workpiece that has a wall with at least one continuous opening through the wall, wherein a diaphragm body is affixed in the at least one opening, such that the diaphragm body completely fills a cross-section of the opening, and processing the diaphragm body by means of a laser.

Abstract: A potentiometric sensor for determining pH, comprising a shaft tube and a glass membrane. The shaft tube and the glass membrane form a first chamber in which an inner electrolyte of the sensor and a discharge element of the sensor are positioned. The sensor also includes a reference element and a reference electrolyte outside the first chamber. The glass membrane and/or a transition region adjoining the glass membrane is produced by a generative process to form a connection between the shaft tube and the glass membrane of the sensor.

Abstract: The present invention relates to a method for the automated production of a workpiece having at least one diaphragm, including a workpiece for an electrochemical sensor, including providing a workpiece that has a wall with at least one continuous opening through the wall, wherein a diaphragm body is affixed in the at least one opening, such that the diaphragm body completely fills a cross-section of the opening, and processing the diaphragm body by means of a laser.

Abstract: One aspect of the present disclosure relates to a method for the automated production of a glass body comprising a diaphragm for a potentiometric sensor. The method includes providing a glass assembly, which includes an outer tube and at least one inner tube running inside the outer tube, wherein the inner tube and the outer tube are arranged coaxially and wherein one end of the inner tube is substance-to-substance bonded to a tube wall of the outer tube; forming at least one aperture through the tube wall of the outer tube; introducing a porous diaphragm body into the aperture, the diaphragm body including a coating of glass in at least one section; and creating a substance-to-substance bond between the tube wall of the outer tube and at least the section of the diaphragm body comprising the coating of glass.

Abstract: A potentiometric sensor having: a measuring half cell with a conductor element; a reference half cell with a reference element; a measuring circuit that is connected with the conductor element of the measuring half cell and the reference element of the reference half cell, is designed to create a measuring signal that is dependent on a potential difference between the conductor element and the reference element. The measuring half cell further includes: a housing, in which a housing chamber is formed, which is closed off by a first ion-selective membrane and contacted by the conductor element a first inner electrolyte contained within the housing chamber, contacting the ion-selective membrane, wherein the conductor element includes an inner conductor, especially an inner conductor comprising a metallic conductor, that is connected with the measuring circuit and a gas-tight barrier separating the inner conductor from the first inner electrolyte.