Patent · US Active

Fail-safe limit level switch

US11099053B2 · kind B2 · utility

0Cited by

1References

12Claims

0Family size

Assignee

Endress+Hauser SE+Co. KG · DE

Inventors

Michael Dötsch · Lindenberg im Allgäu, DE
Max Jehle · Wehr, DE
Izabella Sandor · Schopfheim, DE
Armin Wernet · Rheinfelden (Baden), DE

Key dates

Filing date	Oct 30, 2017
Grant date	Aug 24, 2021
Priority date	—
Expiry date	Dec 17, 2037

Classification

Technology area (CPC G)Physics
CPC primaryG01F23/00
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

Disclosed is an apparatus for determining and/or monitoring a predetermined fill level of a medium in a containment. The apparatus includes a sensor unit and an electronics unit. The electronics unit includes a limiting unit embodied to limit an electrical current or voltage in at least one portion of the electronics unit, a switching unit embodied to control a process switch, and a signal transformation unit embodied to transform a dynamic, electrical input signal into a static, electrical output signal. The static output signal flows through at least one component of the electronics unit. Furthermore, the electronics unit is embodied to supply the sensor unit with an excitation signal, to receive from the sensor unit a received signal, to determine and/or to monitor whether the predetermined fill level has been reached, and to produce a control signal.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.