FLOW METER, IN PARTICULAR FOR CUSTODY TRANSFER

摘要

Shown and described is a flow meter (1), in particular for custody transfer traffic, with a housing (2), at least one evaluation device (3) arranged in the housing and with an interface (4) arranged in the housing for communication with an external operating device (5), wherein the evaluation device (3) via the interface (4) is describable with data. Abuse of the evaluation device (3) is prevented by at least two write-protection sensor elements (7a, 7b) being arranged in the housing (2), in that the housing outside has a receptacle (8) for at least one write-protect influencing element (9), in that the write protection influencing element (9) in the inserted state (8) places the write protection sensor elements (7a, 7b) in a write protection state, that the write protection state of the write protection sensor elements (7a, 7b) is detected by the evaluation device (3) is, wherein upon detection of the write protection state of at least one of the write protection sensor elements (7a, 7b) of the evaluation device (3) at least partially a description of the evaluation device (3) with data via the interface (4) is prevented.