Cover-securing means for a transmitter housing

A cover-securing mechanism for a transmitter housing of a field device of automation technology, wherein the transmitter housing is closed by a screwed-on cover, including:

• a securement pin with a screw arranged at a first end region of the securement pin;
• a passageway, which is embodied to accommodate the securement pin, integrated in the cover;
• and
• a groove, which includes a circularly shaped section and which is introduced into a cover facing region of the transmitter housing;
• wherein the securement pin is securable at a transmitter housing far end of the cover in the passageway such that in a secured state a second end region of the securement pin opposite the first end region protrudes inwardly into the groove, whereby a twisting of the cover screwed onto the transmitter housing is constrained relative to the transmitter housing.