A measuring device (1) for determining a measured variable has a sensor device (2) that generates at least one primary signal depending on the measured variable to be determined, an electronics device (3), a transition section (4) located between the sensor device (2) and the electronics device (3), an interface (5) arranged in the transition section (4) for transmitting energy and/or signals and having at least one signal line (7) between the sensor device (2) and the electronics device (3) are provided. To provide a measuring device that has an interface for transmitting signals or energy, which is easier to access than in the measuring device of the prior art, the interface (5) and the signal line (7) can be reversibly connected for transmitting signals to one another.