Patent · US Active

Field device for process instrumentation

US8825422B2 · kind B2 · utility

1Cited by

4References

3Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Eric Chemisky · Haar, DE
Michael Geppert · Bingen, DE
Ulrich Hahn · Dortmund, DE
Simon Rohrbach · Greenville, US

Key dates

Filing date	Dec 12, 2008
Grant date	Sep 2, 2014
Priority date	—
Expiry date	Aug 24, 2030

Classification

Technology area (CPC G)Physics
CPC primaryG01D3/036
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A field device for process instrumentation, in particular a measuring transducer, comprising an analogue output to which a two-wire line is connectable for transmitting an analogue output signal. The output circuit contains a controller with an actuator connected downstream for the analogue output signal. A monitoring unit monitors whether an actuating signal remains within a predeterminable value range to monitor the output circuit for correctly setting the loop current. If the actuating signal is outside the value range, an indicator signal is output to a computing unit so that suitable measures can be introduced in response to an error state that has thus been identified.

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