The device (10) has a sensor housing for receiving a temperature sensor (16). The sensor housing comprises a sensor support (15) formed in a heat conducting body (11) and closed towards a fluid contact surface (13) of the heat conducting body. The sensor, which is in heat conducting contact with the fluid contact surface, is accommodated in the sensor support. The fluid contact surface is formed of a graphite or carbon graphite material. The heat conducting body comprises a base body that is made of copper or copper alloy.
