| 摘要 |
The invention relates to a field device (1) for use in process automation, said field device having a housing (22) with EMC protection. The housing contains a conductive housing core (3) which is surrounded on all sides by a non-conductive housing casing (2) in a force-fitting or form-fitting manner. At least one printed circuit board (15) is placed on an electrically conductive region (14) of the housing core (3) and is connected thereto, and the printed circuit board divides the interior of the housing into at least two chambers (12, 13) with different degrees of EMC protection. The printed circuit board (15) contains a through-bore (20) by means of which at least one first and second electronic circuit (10, 19) arranged in a mutually spaced manner in different respective chambers (12, 13) are contacted together. The electrically conductive housing core (3) is tied to ground potential by means of ground contacts (6, 16) which are arranged on the inside or the outside of the housing, and the ground potential electrically contacts the circuits (10, 19) by means of housing core (3) regions (9), which are led into the interior through the housing casing (2), using spring contacts (11). Transitions (7) into a sensor or cover unit (17, 18) are provided in the housing in the form of screw contacts and/or sliding contacts such that the contacts are electrically connected to the housing core (3), and seals (8) protect the transitions (7) from environmental influences. |
