An apparatus for determining and/or monitoring at least one process variable. The apparatus includes: at least one sensor element, which is connected to at least one connection line; and at least one conductor element, which is connected to the connection line. At least one formed part is provided; that at least one opening is provided in the formed part for introduction of the connection line; that at least one opening is provided in the formed part for introduction of the conductor element; and that there is provided in the formed part at least one chamber section, into which open the opening for introduction of the connection line and the opening for introduction of the conductor element.