Abstract: The present application discloses a sensor for determining a measurand correlated with a concentration of at least one analyte belonging to the class of reactive oxygen species in a measuring fluid, the sensor including a sensor element having an indicator substance, wherein the indicator substance is oxidized into an oxidized form of the indicator substance by the at least one analyte, a means for generating a flow of current in the sensor element that causes a reduction of the oxidized form of the indicator substance and thereby regeneration of the indicator substance, an optical measuring sensor to detect measuring radiation influenced by the oxidized form of the indicator substance and to generate an electrical measuring signal using the influenced measuring radiation, and a sensor switch connected to the optical measuring sensor to receive the measuring signal and to ascertain a measured value of the measurand using the measuring signal.

Abstract: A potentiometric sensor apparatus, comprising: a measuring half-cell having a measuring membrane; a reference half-cell; and a measurement circuit for registering a potential difference between the measuring half-cell and the reference half-cell. The measuring membrane has, covering at least one portion of the measuring membrane during dry storage of the sensor apparatus, a coating, which is embodied, upon immersion of at least one immersion region of the sensor apparatus (which region comprises the measuring membrane and is intended for immersion in a measured medium) in a liquid, especially a water containing liquid, in the case of continued contact with the liquid, to dissolve, at least partially, off of the measuring membrane.

Abstract: The present application discloses a sensor for determining a measurand correlated with a concentration of at least one analyte belonging to the class of reactive oxygen species in a measuring fluid, the sensor including a sensor element having an indicator substance, wherein the indicator substance is oxidized into an oxidized form of the indicator substance by the at least one analyte, a means for generating a flow of current in the sensor element that causes a reduction of the oxidized form of the indicator substance and thereby regeneration of the indicator substance, an optical measuring sensor to detect measuring radiation influenced by the oxidized form of the indicator substance and to generate an electrical measuring signal using the influenced measuring radiation, and a sensor switch connected to the optical measuring sensor to receive the measuring signal and to ascertain a measured value of the measurand using the measuring signal.

Abstract: A method for operating a measuring point for determining at least one measured variable of a medium is disclosed. The measuring point includes a base unit, which is connected releasably with a sensor unit, and which is provided for communication of a signal representing the value of the measured variable to a process monitoring facility. The following steps are included: at least one-time registering and storing in the base unit a value of a diagnostic parameter stored in the sensor unit or produced by the sensor unit; on the basis of this value conforming a prognosis value or prognosis interval stored in the base unit, and storing the conformed prognosis value or prognosis interval in the base unit in place of the previously stored prognosis value or prognosis interval.

Abstract: An electrode comprising: a least a first, preferably cylindrical, glass body, in which at least a first chamber is formed; at least a first electrolyte, which is located in the first chamber; at least a first potential-forming element, which is arranged in the chamber, and forms a first potential when contacted by the first electrolyte; at least a first closing element, which is axially fixed in the first chamber for enclosing the first electrolyte and the first potential-forming element and sealedly closes the first chamber; wherein, additionally, the first closing element is conductive, the first potential-forming element conductingly contacts the first closing element, and the electrode furthermore includes at least a first electrical conductor, which electrically contacts the first closing element on the side of the first closing element facing away from the first electrolyte.

Abstract: A method for manufacturing a glass body for a potentiometric sensor, including: loading a first spindle of a glass lathe with outer and inner glass tubes, so that the glass tubes are arranged coaxially with one another and with the axis of rotation of the first spindle, the inner glass tube and the outer glass tube each has a media-side end, and the two media-side ends have defined axial positions relative to one another; loading a second spindle with an auxiliary glass tube, so that the axis of rotation of the second spindle is arranged coaxially with the axis of rotation of the first spindle; moving the auxiliary glass tube to be contiguous with the outer glass tube; fusion joining of the outer glass tube with the auxiliary glass tube; producing a connection between the outer glass tube, or the auxiliary glass tube, and the inner glass tube; removing a remainder of the auxiliary glass tube; producing a media-side opening of the inner glass tube; and forming a media-side edge of the opening.

Abstract: An electrode comprising: a least a first, preferably cylindrical, glass body, in which at least a first chamber is formed; at least a first electrolyte, which is located in the first chamber; at least a first potential-forming element, which is arranged in the chamber, and forms a first potential when contacted by the first electrolyte; at least a first closing element, which is axially fixed in the first chamber for enclosing the first electrolyte and the first potential-forming element and sealedly closes the first chamber; wherein, additionally, the first closing element is conductive, the first potential-forming element conductingly contacts the first closing element, and the electrode furthermore includes at least a first electrical conductor, which electrically contacts the first closing element on the side of the first closing element facing away from the first electrolyte.

Abstract: A method for operating a measuring point for determining at least one measured variable of a medium, wherein the measuring point includes a base unit, which is connected releasably with a sensor unit, and which is provided for communication of a signal representing the value of the measured variable to a process monitoring facility. The following steps are included: at least one-time registering and storing, in a first data storage unit of the base unit, of a value of a diagnostic parameter stored in the sensor unit or produced by the sensor unit; on the basis of the at least one value of the diagnostic parameter stored in the first data storage unit, conforming a prognosis value or prognosis interval stored in a second data storage unit of the base unit, and storing the conformed prognosis value or prognosis interval in the second data storage unit of the base unit in place of the previously stored prognosis value or prognosis interval.

Abstract: A method for monitoring a reference half cell, which forms with a measuring half cell a potentiometric measuring point for determining and/or monitoring an ion concentration of a medium. The ion concentration of the mediums determined on the basis of at least one measurement signal determined in a measuring circuit, between the measuring half cell and the reference half cell. According to the invention, the measuring point is operated intermittently in an operating mode and in a test mode, wherein, in the operating mode, the ion concentration is measured and wherein, in the test mode, the proper functioning of the reference half cell is checked.

Abstract: A method for manufacturing a glass body for a potentiometric sensor, including: loading a first spindle of a glass lathe with outer and inner glass tubes, so that the glass tubes are arranged coaxially with one another and with the axis of rotation of the first spindle, the inner glass tube and the outer glass tube each has a media-side end, and the two media-side ends have defined axial positions relative to one another; loading a second spindle with an auxiliary glass tube, so that the axis of rotation of the second spindle is arranged coaxially with the axis of rotation of the first spindle; moving the auxiliary glass tube to be contiguous with the outer glass tube; fusion joining of the outer glass tube with the auxiliary glass tube; producing a connection between the outer glass tube, or the auxiliary glass tube, and the inner glass tube; removing a remainder of the auxiliary glass tube; producing a media-side opening of the inner glass tube; and forming a media-side edge of the opening.

Abstract: A method for monitoring a reference half cell, which forms with a measuring half cell a potentiometric measuring point for determining and/or monitoring an ion concentration of a medium. The ion concentration of the mediums determined on the basis of at least one measurement signal determined in a measuring circuit, between the measuring half cell and the reference half cell. According to the invention, the measuring point is operated intermittently in an operating mode and in a test mode, wherein, in the operating mode, the ion concentration is measured and wherein, in the test mode, the proper functioning of the reference half cell is checked.

Abstract: A reference half-cell for use in a potentiometric measuring cell for determining ionic activities in a solution being measured. Additionally, a bridge electrolyte and a method for the synthesis of this bridge electrolyte are discussed. The bridge electrolyte comprises a cationic gel based on diallyldimethylammonium chloride (DADMAC), into which a reference electrolyte is incorporated.

Abstract: The invention concerns an automated method for producing a blown glass body, in particular a glass wall of an electrochemical sensor, wherein an immersion tube (10), through which air or gas can flow, is immersed into molten glass an amount of molten glass from the molten glass mass, and wherein the (8) and subsequently withdrawn to remove removed glass is blown into the form of the glass body to be produced by means of the air or gas flowing through the immersion tube (10), comprising the following features:—the position of the surface (42) of the molten glass (8) in the adjustment direction of the immersion tube (10) is determined; an adjustment means (18) for the immersion tube (10) is controlled in correspondence with the determined position of the surface (42) such that the free end of the immersion tube is first immersed into the molten glass mass (8) up to a certain predetermined immersion depth (h) of molten glass; and then removed thereby retaining a predetermined amount—following removal from the mo

Abstract: The invention relates to a connector comprising a plug element and a socket element which can be detachably connected to the plug element for connection of a transmission line to at least one sensor. This connection prevents moisture, dust or dirt particles and corrosive substances penetrating between the plug element and the socket element from adversely affecting the signal transmission between the plug element and the socket element. The connector utilizes an inductive, optical or capacitive contactless signal transmission between the plug element and the socket element.

Abstract: The invention concerns an automated method for producing a blown glass body, in particular a glass wall of an electrochemical sensor, wherein an immersion tube (10), through which air or gas can flow, is immersed into molten glass (8) and subsequently withdrawn to remove an amount of molten glass from the molten glass mass, and wherein the removed glass is blown into the form of the glass body to be produced by means of the air or gas flowing through the immersion tube (10), comprising the following features:

Abstract: The invention relates to a connector comprising a plug element and a socket element which can be detachably connected to the plug element for connection of a transmission line to at least one sensor. This connection prevents moisture, dust or dirt particles and corrosive substances penetrating between the plug element and the socket element from adversely affecting the signal transmission between the plug element and the socket element. The connector utilizes an inductive, optical or capacitive contactless signal transmission between the plug element and the socket element.