Measuring device for the measurement of the ph - value at a measurement location, in particular for measurement of the ph - value of wounds, with a housing (2) for receiving an electronic measuring circuit for processing the of a sensor element (6, 9) delivered measurement signals, characterized by a the housing (2) during the measurement at least from the measuring point, which receives and separating protective sheath (5), to which the the ph - value of the measurement location detecting sensor element (6, 9, 11) is provided.
