US 12,114,449 B2
Housing module and field device
Markus Beissert, Auggen (DE); Harald Müller, Fulda (DE); and Marc Fiedler, Reinach (CH)
Assigned to Endress+Hauser Flowtec AG, Reinach (CH)
Appl. No. 17/626,189
Filed by Endress+Hauser Flowtec AG, Reinach (CH)
PCT Filed Jun. 18, 2020, PCT No. PCT/EP2020/066958
§ 371(c)(1), (2) Date Jan. 11, 2022,
PCT Pub. No. WO2021/004754, PCT Pub. Date Jan. 14, 2021.
Claims priority of application No. 102019118778.8 (DE), filed on Jul. 11, 2019.
Prior Publication US 2022/0256723 A1, Aug. 11, 2022
Int. Cl. H05K 5/02 (2006.01); G01D 11/24 (2006.01); H01B 17/26 (2006.01)
CPC H05K 5/0247 (2013.01) [G01D 11/245 (2013.01); H01B 17/26 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A housing module of a field device configured for measurement and automation technology, the housing module comprising:
a housing including a housing wall, which defines a first housing chamber and a second housing chamber, wherein the first housing chamber and the second housing chamber are separated by a partition wall, which is releasably fastened;
a measurement/operating electronics unit disposed in the first housing chamber; and
an interface electronics unit disposed in the second housing chamber and configured to enable connecting lines for supplying power to the field device and/or for exchanging data,
wherein the partition wall includes a through-opening in which an electrical feedthrough is disposed, wherein the electrical feedthrough is configured to enable an electrical connection between the measurement/operating electronics unit and the interface electronics unit and to satisfy requirements of an Ex-d standard according to IEC60079-1 of 2014-06 and EN60079-1 of 2014-06,
wherein the electrical feedthrough includes an electrically-insulating carrier body having a longitudinal axis and a plurality of electrically-conductive connecting devices configured to enable the electrical connection, the plurality of connecting devices extending through corresponding holes or through-openings in the carrier body,
wherein the corresponding holes each have a first dimension along a hole axis and an inner diameter, wherein the plurality of connecting devices each have an outer diameter,
wherein the plurality of connecting devices are held in the carrier body in a positive-locking manner in a direction of the second housing chamber on a side of the carrier body facing the first housing chamber,
wherein a ratio of a difference between the inner diameter of the corresponding hole and the outer diameter of the corresponding connecting device to the first dimension is less than 0.05,
wherein the carrier body is configured to be inserted into the through-opening from a side of the partition wall facing the first housing chamber as to form a flame arrestor in accordance with the Ex-d standard.