| 摘要 |
The invention relates to security devices, particularly to devices for detection of unauthorised access to meters of energy resources consumption, for example electricity, gas and water, and to other control devices by action of a magnetic field. The indicator represents a device having a housing formed with a convex hollow transparent section and a side section branching off it along the perimeter of the base, the side section being made so that it can be tightly fixed on the outer surface adjoining it. The indicator is provided with a magnetosensitive assembly made in the form of a magnetosensitive element containing a viscous mixture of magnetic particles on the basis of binding additives. The magnetosensitive element is applied onto the inner surface of the convex section of the housing in the form of a spot of an arbitrary configuration that is changed under action of the magnetic field. The result achieved by means of this invention consists in simplification of the magnetic field indicator design and improvement of a reliability degree of detection of an available magnetic field at unauthorised action on meters of consumption of energy resources. |
