A process monitoring device, preferably for pharmaceutical bioprocess applications, comprising: - a measuring tube module, wherein the measuring tube module comprises at least one measuring tube through which a medium can flow; - a recording module, wherein the receiving module has a receiving module body which at least partially delimits a receptacle, wherein the measuring tube module can be inserted into the receptacle, wherein the measuring tube module is mechanically separably connectable to the receiving module; and - a plant, in particular for biotechnical applications, wherein the system has a housing, wherein the housing has a housing wall, in particular formed from sheet metal, which defines an interior of the housing, wherein the housing wall has a cover, wherein the cover has a cover opening, wherein the receptacle module, in particular the receptacle, extends through the cover opening into the interior of the housing, wherein the receptacle extends in a receiving direction, wherein the receiving module is arranged in the cover opening such that the receiving direction has a vectorial portion with a direction opposite to a direction of a gravitational force, characterized in that the receiving module has a section, whereby the section is located outside the interior of the housing, wherein the receiving module has a particularly circumferential shoulder in the section, wherein the cover has a covering surface, wherein the heel has a heel surface, wherein the heel surface and the cover surface face each other, wherein an inclination body is clamped between the heel surface and the cover surface, wherein the in particular acute-angled inclination body is wedge-shaped. - a measuring tube module, wherein the measuring tube module comprises at least one measuring tube through which a medium can flow; - a recording module, wherein the receiving module has a receiving module body which at least partially delimits a receptacle, wherein the measuring tube module can be inserted into the receptacle, wherein the measuring tube module is mechanically separably connectable to the receiving module; and wherein the receiving module has a receiving module body which at least partially delimits a receptacle, wherein the measuring tube module can be inserted into the receptacle, wherein the measuring tube module is mechanically separably connectable to the receiving module; and - a plant, in particular for biotechnical applications, wherein the system has a housing, wherein the housing has a housing wall, in particular formed from sheet metal, which defines an interior of the housing, wherein the housing wall has a cover, wherein the cover has a cover opening, wherein the receptacle module, in particular the receptacle, extends through the cover opening into the interior of the housing, wherein the receptacle extends in a receiving direction, wherein the receiving module is arranged in the cover opening such that the receiving direction has a vectorial portion with a direction opposite to a direction of a gravitational force, characterized in that the receiving module has a section, whereby the section is located outside the interior of the housing, wherein the receiving module has a particularly circumferential shoulder in the section, wherein the cover has a covering surface, wherein the heel has a heel surface, wherein the heel surface and the cover surface face each other, wherein an inclination body is clamped between the heel surface and the cover surface, wherein the in particular acute-angled inclination body is wedge-shaped. wherein the system has a housing, wherein the housing has a housing wall, in particular formed from sheet metal, which defines an interior of the housing, wherein the housing wall has a cover, wherein the cover has a cover opening, wherein the receptacle module, in particular the receptacle, extends through the cover opening into the interior of the housing, wherein the receptacle extends in a receiving direction, wherein the receiving module is arranged in the cover opening such that the receiving direction has a vectorial portion with a direction opposite to a direction of a gravitational force, characterized in that the receiving module has a section, whereby the section is located outside the interior of the housing, wherein the receiving module has a particularly circumferential shoulder in the section, wherein the cover has a covering surface, wherein the heel has a heel surface, wherein the heel surface and the cover surface face each other, wherein an inclination body is clamped between the heel surface and the cover surface, wherein the in particular acute-angled inclination body is wedge-shaped.