Intrinsically safe wireless dongle for a field device

US9543712B2 · kind B2 · utility

Assignee

• Endress+Hauser Conducta GmbH+Co. KG · DE

Inventors

• Michael Korn · Stuttgart, DE
• Björn Haase · Stuttgart, DE
• Stefan Robl · Hünxe, DE
• Tilman Benkert · Stuttgart, DE
• Gunter Jahl · Gerlingen, DE

Key dates

• Filing date: Jul 15, 2015
• Grant date: Jan 10, 2017
• Expiry date: Jul 15, 2035

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04W12/02
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

A wireless dongle for use in the potentially explosive area for an automation field device to connect to an electrical interface of the field device, having a wireless circuit for sending and receiving wireless signals and a connector element. The wireless dongle can be detachably fitted to the electrical interface by means of the connector element. The connector element has several contact elements, wherein the contact elements are attached to a printed circuit board in the wireless dongle, that a first contact element is used to supply the wireless dongle with energy, that an energy buffer on the printed circuit board is provided which is downstream of the first contact element. The connector element has a second contact element which is used to transmit data between the field device and the wireless dongle, that in each case there is at least one limiting resistor is downstream of the first contact element and the second contact element, and that the resistors and the energy buffer of the wireless dongle are encapsulated by means of a potting compound.