| CPC H05K 5/0213 (2013.01) [H05K 5/02 (2013.01); H05K 5/0217 (2013.01); H05K 7/1427 (2013.01); F15B 20/00 (2013.01)] | 18 Claims |
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1. An apparatus, for process automation for use in an area in which there is a risk of explosion and in which dust occurs, the apparatus comprising:
a wall structure serving as a housing of the apparatus and comprising a first wall structure section defining a first housing inner area and a second wall structure section defining a second housing inner area separate from the first housing inner area,
wherein a first circuit arrangement is arranged in the first housing inner area and the first housing inner area is enclosed in a dust-tight manner by the first wall structure section so that the dust cannot penetrate into the first housing inner area and explosion protection of the first housing inner area is ensured by the dust-tight enclosure, and
wherein one or more electric circuits are arranged in the second housing inner area and all of the one or more electric circuits arranged in the second inner area form an altogether intrinsically safe second circuit arrangement, so that dust penetrating into the second housing inner area cannot cause explosion-initiating heating and/or spark formation by the second circuit arrangement and explosion protection of the second housing inner area is ensured by the altogether intrinsically safe second circuit arrangement, and
wherein the apparatus further comprises an exchangeable attachment element, the exchangeable attachment element being part of the second wall structure section, wherein the exchangeable attachment element comprises one or more fluid ports.
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