Patent ID: 11927486
Assignee: FIREFLY AB
Field: Measurement (Instruments)
Classification: CPC G  A | IPC A  G

Claim 11:
12. A method comprising:
detecting a signal related to a temperature of particles moving through a field-of-view of a sensor arrangement, said field-of-view being arranged in a path of movement of the particles from a first position to a second position, the sensor arrangement comprising at least one set of sensing elements detecting radiation emitted from the particles, each set comprising at least two sensing elements arranged to co-operate with mutually separated sensing zones along the path of movement of the particles;
forming the signals from the at least one set of sensing elements into at least one pulse train of signal strengths when a particle moves through the field-of-view of the sensor arrangement; and
monitoring changes over time in the temperature of different particles moving through the field-of-view of the sensor arrangement by monitoring changes over time in the wavelength distribution of the radiation emitted from the different particles based on the relation between the signal strengths of this at least one pulse train.