Abstract: An arrangement of probes is described, which comprises a carrier formed as an intermediate flange, in which a plurality of radially extending mounting openings are provided. The inner surfaces of the carrier are provided with an electrically insulating corrosion resistant layer, which is preferably an enamel layer. The carrier is having a polygonal outline and plane mounting surfaces surrounding the mounting openings. Measuring probes provided with a mounting flange can be exchangeably and sealingly attached to the mounting surfaces. By arranging different probes a large number of different measurement functions and supervision functions can be achieved. As an example, carrier sleeves comprising a window can be built in, so that a visual observation or a turbidity measurement can be performed.

Abstract: A temperature measuring sensor arrangement is described, which can be inserted into or removed from an enamelled built in part in a simple manner without a need for specific tools. A measuring insert with a carrier is provided, along the length of which an outwardly protruding detent element in the form of a collar is provided, and from the lower end surface of which carrier one or several measuring sensors are protruding. The carrier is slidably arranged in a longitudinal direction in a guiding tube and is biased downwardly by a spring engaging between the detent element and a shoulder in the guiding tube. A stop protruding from the inner wall of the guiding tube limits the displacement of the biased carrier.

Abstract: A method and a measuring device for localizing a damage in a dielectric corrosion resistant layer of a pipe line are described, especially for an enameled pipe line, through which an electrolytically conducting fluid is passed. Localization is achieved by performing a potential difference measurement between two electrodes arranged at the begining and at the end of a supervised region along the length of the pipe line, to which preferably a constant current source is connected, the positive terminal of which is connected with the carrier material of the pipe line and the negative terminal of which is connected with the two electrodes. Preverably a calibration is performed by means of an additional electrode, which can be connected to the measurement region.