Device and method for automatically detecting at least one fluorescent and/or light absorbing indicator contained in a liquid service fluid during the process of filling the service fluid into a machine

A machine comprising:

• a device for automatically detecting at least one fluorescing and/or light-absorbing indicator contained in a liquid service fluid during a process of filling the service fluid into the machine, the device including a filler tube for the service fluid, the service fluid to be poured in reaching a service fluid supply of the machine through the filler tube, and further including a measurement section made of a translucent material, the measurement section at least partially filled with or traversed by a flow of the service fluid when filling the service fluid into the filler tube, the device further including at least one light source radiating onto the measurement section and an opto-receiver onto which the light impinges, the light being transmitted through the service fluid when the service fluid flows through the measurement section and/or emanating from the indicator due to a fluorescent effect, and which generates at least one measurement signal as a function of an intensity of the light impinging on the opto-receiver, the device including an evaluation unit evaluating at least one measurement signal of the opto-receiver;
• wherein the filler tube leads into the measurement section.