Patent · US Active

Automation technology field device

US10379509B2 · kind B2 · utility

0Cited by

6References

4Claims

0Family size

Assignee

Endress+Hauser SE+Co. KG · DE

Inventors

Tobias Paul · Schopfheim, DE
Ralph Stib · Schongau, DE

Key dates

Filing date	Jan 30, 2015
Grant date	Aug 13, 2019
Priority date	—
Expiry date	Jul 8, 2035

Classification

Technology area (CPC G)Physics
CPC primaryG05B2219/25462
WIPO fieldControl
WIPO sectorInstruments

Abstract

An automation technology field device with at least two connection terminals to which a two-wire line or a four-wire line can be connected, such that a loop current can be supplied to the field device via the connection terminals. A safety device is provided which is used to ensure the electromagnetic compatibility and/or the explosion proofing of the field device, wherein the safety device is connected to each connection terminal via one line each, and wherein at least one current converter arranged around the line is provided, which reads back the loop current in at least one of the two lines between the safety device or parts of the safety device and the connection terminals in a galvanically isolated manner.

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