Patent · US Active

Field device having a safe interface

US11913976B2 · kind B2 · utility

0Cited by

2References

10Claims

0Family size

Assignee

ENDRESS+HAUSER WETZER GMBH+CO. KG · DE

Inventors

Björn Walser · Oberstaufen, DE
Roberto Lugli · Segrate, IT
Michael Schnalke · Nesselwang, DE
Fabian Schmölz · Stuttgart, DE

Key dates

Filing date	Aug 20, 2020
Grant date	Feb 27, 2024
Priority date	—
Expiry date	Jan 21, 2041

Classification

Technology area (CPC G)Physics
CPC primaryG05B2219/25428
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A field device having a safe interface is based on two voltage regulators designed to set electrical current between corresponding contacts of the interface. The field device tests via which of the contacts the field device is connected with a superordinate unit and an automatic configuration of the interface can be performed for the appropriate transmission standard. Because the contacting to the superordinated unit is checked repetitively by means of two electrical current regulators it is assured that the field device can determine and automatically react to a change of the contacting at the interface even during measurement operation. This makes the interface safe and thereby increases the safety of the process plant, in which the field device is applied.

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