Granted Patent B2

US 12,650,371 · App. 18/293,398 · Granted Jun 9, 2026

Inventors: Peter Klöfer (Steinen, DE); Sergey Lopatin (Lörrach, DE); Anh Tuan Tham (Berlin, DE); Volker Frey (Schopfheim, DE); Benjamin Scherer (Oberried, DE)

Assignee: Endress+Hauser SE+Co. KG

G01N15/0656G01F23/284G01L19/0092G01L19/142G01N2015/0053

Abstract

Claims (35)

1 . A window adapted for a measuring arrangement comprising a containment for a medium and at least one measuring device for registering a property of the medium, wherein the window is adapted to be applied as a component of the containment or of the measuring device and to form a closure for a lumen of the containment,

wherein the window comprises a dielectric material,

wherein the window includes a ferromagnetic marking, such that the window is adapted in case of a partial failure of the window to shed ferromagnetically marked pieces of itself.

2 . The window as claimed in claim 1 ,

wherein the marking is formed by a coating of a containment lumen faceable side of the window with a plurality of ferromagnetic marking particles,

and/or

wherein the dielectric material comprises at least in the region of a containment lumen faceable side a plurality of ferromagnetic marking particles.

3 . The window as claimed in claim 2 ,

wherein a concentration of the marking particles is defined by a number N per cubic millimeter,

wherein at least in a region of an interface between medium and dielectric material N is greater than 100 and/or wherein N is less than 1,000,000.

4 . The window as claimed in claim 1 ,

wherein a volume of a marking particle is, in each case,

at least 1 cubic micrometer

and/or

at most 100,000 cubic micrometer.

5 . A measuring arrangement comprising a containment for a medium as well as a measuring device for registering a property of the medium,

wherein the containment and/or the measuring device have/has, in each case, at least one window as claimed in one of the preceding claims to a lumen of the containment, wherein the window comprises a dielectric material, such as, for example, a glass or a ceramic,

wherein

the window includes a ferromagnetic marking, which is adapted in case of a partial failure of the window to shed ferromagnetically marked pieces into the medium.

6 . The measuring arrangement as claimed in claim 5 ,

wherein a detector for detecting ferromagnetic materials is provided and adapted to check for presence of marking particles in the medium,

wherein the detector is arranged in the region of a drain of the containment.

7 . The measuring arrangement as claimed in claim 6 ,

wherein the detector is adapted to detect marking particles by establishing a magnetic flux density change.

8 . The measuring arrangement as claimed in claim 7 ,

wherein the detector comprises:

a quantum magnetometer based on nitrogen vacancy centers in diamond,

a fluxgate magnetometer,

a giant magnetoresistance magnetometer.

9 . The measuring arrangement as claimed in claim 6 ,

wherein the detector is adapted to sense a magnetic field in at least two directions.

10 . The measuring arrangement as claimed in claim 5 ,

wherein the measuring device is a pressure measuring device having a pressure measuring cell comprising a ceramic material or a radar fill level measuring device having transmitting/receiving means comprised of a ceramic material,

wherein the ceramic material contains the ferromagnetic marking.

11 . The measuring arrangement as claimed in claim 5 , wherein the window is a viewing window.

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (14)