A liquid consuming apparatus comprising: a liquid cartridge comprising: a liquid chamber storing liquid therein; a liquid supply portion configured to supply the liquid from the liquid chamber to the outside of the liquid cartridge; an air communication portion configured to bring the liquid chamber into communication with the atmosphere outside the liquid cartridge; and a capillary portion having a first end and a second end, wherein the first end is configured to be in communication with the liquid chamber and the second end is configured to be in communication with the atmosphere outside the liquid cartridge, and wherein the capillary portion is configured to move the liquid from the first end to the second end therethrough by capillary force; a cartridge mounting portion configured to receive the liquid cartridge; a liquid consuming portion configured to consume the liquid supplied via the liquid supply portion from the liquid cartridge mounted to the cartridge mounting portion; a contact member provided at the cartridge mounting portion and configured to contact and move a portion of the liquid cartridge mounted to the liquid cartridge mounting portion and, by moving said portion, to bring the liquid chamber into communication with the atmosphere outside the liquid cartridge via the air communication portion; a detector configured to output a detection signal based on presence or absence of the liquid in a detection position in the capillary portion; and a controller configured to: measure, based on the detection signal output from the detector, a physical quantity, based on which a velocity of liquid moving in the capillary portion can be specified; and determine whether the physical quantity is within a threshold range. a liquid cartridge comprising: a liquid chamber storing liquid therein; a liquid supply portion configured to supply the liquid from the liquid chamber to the outside of the liquid cartridge; an air communication portion configured to bring the liquid chamber into communication with the atmosphere outside the liquid cartridge; and a capillary portion having a first end and a second end, wherein the first end is configured to be in communication with the liquid chamber and the second end is configured to be in communication with the atmosphere outside the liquid cartridge, and wherein the capillary portion is configured to move the liquid from the first end to the second end therethrough by capillary force; a liquid chamber storing liquid therein; a liquid supply portion configured to supply the liquid from the liquid chamber to the outside of the liquid cartridge; an air communication portion configured to bring the liquid chamber into communication with the atmosphere outside the liquid cartridge; and a capillary portion having a first end and a second end, wherein the first end is configured to be in communication with the liquid chamber and the second end is configured to be in communication with the atmosphere outside the liquid cartridge, and wherein the capillary portion is configured to move the liquid from the first end to the second end therethrough by capillary force; a cartridge mounting portion configured to receive the liquid cartridge; a liquid consuming portion configured to consume the liquid supplied via the liquid supply portion from the liquid cartridge mounted to the cartridge mounting portion; a contact member provided at the cartridge mounting portion and configured to contact and move a portion of the liquid cartridge mounted to the liquid cartridge mounting portion and, by moving said portion, to bring the liquid chamber into communication with the atmosphere outside the liquid cartridge via the air communication portion; a detector configured to output a detection signal based on presence or absence of the liquid in a detection position in the capillary portion; and a controller configured to: measure, based on the detection signal output from the detector, a physical quantity, based on which a velocity of liquid moving in the capillary portion can be specified; and determine whether the physical quantity is within a threshold range. measure, based on the detection signal output from the detector, a physical quantity, based on which a velocity of liquid moving in the capillary portion can be specified; and determine whether the physical quantity is within a threshold range.