Patent Number: 6,294,732

Title: Field device of the pressure-resistant encapsulation type of protection

Abstract: The present invention is directed to an electrical field device of the pressure-resistant encapsulation type of protection for use in areas at risk of explosion and has at least a first and second mechanically and electrically coupled modules. The first module includes a connection space for the connection of the field device in an explosion-hazard area with safety barrier arranged therein and has a housing of the type of protection of the pressure-resistant encapsulation. The second module includes a field device of the self-secured type of protection and the electrical connection between the two modules comprises an arc-over-proof lead bushing, and the electrical signal connections of the second module are realized via the lead bushing.

Inventors: Hoffmann; Heinfried (Frankfurt am Main, DE), Kemmler; Lothar (Moerfelden-Walldorf, DE)

Assignee: Samson Aktiengesellschaft

International Classification: H02B 1/28 (20060101); H02B 1/00 (20060101); H01J 005/00 ()

Expiration Date: 09/25/2018