Abstract: A field device includes a housing with a first end distant from a process and a second end close to the process, an electronic system arranged at the first end, and a process connection and a sensor arranged at the second end. The field device defines a first heat conduction path (A), which extends from the second end close to the process to an emitting region, and at least one second heat conduction path (B, B?), which extends from the second end close to the process to the electronic system, wherein the length of the first heat conduction path (A) is shorter than the length of the second heat conduction path (B, B?), and the heat conduction paths (A, B, B?) are arranged so that the thermal resistance of the first heat conduction path (A) is lower than the thermal resistance of the second heat conduction path (B, B?).