Protective housing device for receiving e.g. field device, of process automation unit, has thermal blocking filter provided with thermally absorbent and/or thermally insulating functional material

摘要

The device (1) has a thermoelectric power source or a thermoelectric generator cascade provided with thermally insulated identity elements such as thermo electric module. A thermal blocking filter is provided with a thermally absorbent and/or thermally insulating functional material. A funnel shaped unit cools a field device transmitter (11) by induced draft effect. A section of a housing wall is equipped with thermal insulating layers that comprise low thermal conductivity, and thermal insulating materials based on infrared reflection layers.