Methods of operating a metering device for the metered dispensing of pumpable media, in particular color pigment preparations, metering device and canister

摘要

The invention relates to a method of operating a metering device (1) for metered dispensing of pumpable media, in particular of color pigment preparations, the metering device (1) comprising a dispensing means (2), which is in fluid connection with a plurality of canisters (3), wherein said metering device (1) comprises a controller (8) by means of which at defined times a defined dispensing volume of the medium is drawn from at least one of said canisters (3) and conveyed to said dispensing means (2) by means of a conveyor (10), wherein, in particular, by means of said controller (8) also an actual fill level is determined and/or calculated depending on a dispensing volume drawn from the respective canister (3). According to the invention, at least one calibration sensor (30), in particular a capacitive sensor, is arranged on said canister (3), preferably on an outer wall of said canister (3), in such a way that it is responsive in the event that the medium in said canister reaches at least a defined known calibration fill level, and transmits a corresponding sensor signal to said controller (8), based on which the controller (8) recognizes the calibration fill level as effective actual fill level and/or takes it over as a new current actual fill level. Further, a metering device and a canister are provided (FIG. 3).