Equipment for the determination of the flux of matter.

摘要

In an equipment for the determination of the flux of matter (substance flow) through an interface, it is arranged that there is at least one sensor layer (4; 9) which can be assigned to the interface (3) and which opposes the flux of matter with a known or predeterminable finite resistance, that an optical indicator (8; 8') for determining a first measured value of a variable which depends on the mean concentration of matter in the sensor layer (4) is provided in the sensor layer (4; 9), that a second measured value of said variable on one side of the sensor layer (4) is known or can be determined by a further optical indicator (8') present in the second sensor layer (9), and that an evaluation device (7) is provided for determining the flux of matter from the difference between the two measured values.